Wit Zen Mann Kata Log

8/12/2019 Wit Zen Mann Kata Log

1/110

Pipe hangers and supports including accessories


2/110

Edition 05/2006

The products in this publicationhave been designed and optimized

according to the state of the art.

Subject to change without notice.

Witzenmann GmbH

stliche Karl-Friedrich-Str. 13475175 PforzheimGerman

Phone: +49 - (0)7231 - 5 81- 0

Fax: +49-(0)7231- 581-820

[email protected]

www.witzenmann.de


3/110

Contents

Contents

The product range for pipe supports page 4

The company page 5

Quality assurance page 6

Design and suitability page 8

The hanger system page 9

The products page 12

The applications page 22

The product range page 26

Planning and design page 32

Standard products page 36

Variable spring hangers page 37

Constant hangers page 51

Connecting parts page 64

Pipe clamps page 74

Horizontal pipe clamps page 76

Riser clamps page 94

Special types page 102

Manufacture, inspection and testing page 104

Marking, corrosion protection, packaging page 105

Installation instructions for hangers page 106

Installation instructions for pipe clamps page 108


4/110

4

Theproductrange

forpipesupports

The product range for pipe supports

The whole range of stan-dardized HYDRA pipesupports is arranged ac-cording to a coordinatedsystem with comparablecriteria for applicationsand design, and compat-ible connections.

Our products are based onpractical experience andintensive developmentwork spanning more than20 years and comply in allrespects with the require-ments of modern plant andpipe technology.

The series of catalogueson the right with theircompletely new conceptis categorized accordingto subject, taking intoaccount the requirementsof our customers.

These catalogues1) includeall the information anddata needed for planningand applications.

The clear arrangement andpresentation helps users tounderstand this vast fieldand makes the work of thedesigner easier.

Simply order thecatalogues you require.

Hangers and supports

Variable springhangers/supports

Constant hangers/supports

Connecting parts Pipe clamps

Supports Sliding supports Roller supports Guides and anchors

Dynamic parts Sway struts Connections Clamps

Structural steelwork Standard designs Custom designs

Pipe clamps Horizontal pipe clamps Riser clamps

Engineering and service Advice Planning Service

1) New publications, some still in preparation

Catalogues for pipe support products


5/110

5

Thecompany

The company

Our company, situated inthe traditional industrialstate of Saxony, has along history in the manu-facturing of high-qualityinvestment goods forpipelines and plants.

The incorporation ofthe company into theWitzenmann Group in1991 concentrated theproduction of all pipesupports in the plantat Werdau. The wholeknowledge of the groupis now available, and

that in turn has placedthe company on an evenbroader footing.

The Witzenmann Groupwas formed around thepioneer company in thissector. Today, the groupemploys approx. 2,400employees and generatesa turnover of 250 millioneuros. The main plant hasbeen located in Pforzheimsince the company was

founded in 1854.More than 100 years ago,Witzenmann establishedthe metal hose and expan-sion joints industry afterthe invention of the metalhose.

Entrepreneurial activity, in-ventiveness and trendset-ting product developmentshave made Witzenmannone of the leading com-panies worldwide in thefield of flexible metal ele-ments such as metalhoses, expansion jointsand metal bellows as wellas automotive parts andpipe supports.

In order to ensure direct,local contact with our cus-tomers, a vast distributionnetwork has been estab-lished with qualified repre-sentatives at home andabroad.

The Witzenmann Grouphas more than 40 sub-sidiaries and productionplants located around theglobe.

Progressive technologyand a high awareness ofquality established ourleading position in the fieldof pipe supports manyyears ago. The expansionof our range has strength-ened this position. Thisenables us to meet evenspecial market require-

ments.Our current range includesthe whole range of HYDRA

pipe supports as requiredin the construction of powerstations, district heating,the chemicals and petro-chemicals industries.

The range includes: hang-ers, supports, assemblies,all types of pipe clamps,roller supports, slidingsupports, anchors andguides; sway struts andsteel parts for supports.

The main building of the Werdau plant

Constant hangers

The main plant in Pforzheim


6/110

6

Our company has setup a quality assurancesystem which guaranteesthat the quality of ourproducts meets therequirements of ourcustomers in everyrespect. A quality assur-ance manual obligatoryfor all divisions in ourcompany determinesthe structure and use ofthe quality assurancesystem.

Our quality assurancesystem is based on nationaland international standardsand specifications like DINISO 9001, KTA 1401, ADdata sheets, ASME Code,British Standards, etc. Thisforms the foundation formanufacturers approvalsas well as suitability andtype approvals from autho-rized inspection bodiesand customers.

Acknowledged test centrescarry out regular inspec-tions to ensure that we

uphold quality and testingstandards within the scopeof monitoring contractswith quality associations.We are certified to ISO9001:2000.

That guarantees full verifi-cation for the quality of allour products.

Strict organization ofresponsibility for quality

Our quality assurancesystem is under the directcontrol of the generalmanagement. The centralquality assurance depart-ment is in overall chargeof the organizational andtechnical measures forquality assurance, and theapproval of procedureinstructions. The qualityassurance personnel ineach of the divisions areresponsible for quality

planning, quality manage-ment and quality inspec-tions during the processingof orders.

Consideration of cus-tomers requirements

The sales departmentensures that the require-ments specified by andagreed to in customersorders are clearly stipulatedand can be met fully in thesubsequent planning andproduction processes.

Development and design

The engineering depart-ment is responsible for thedesign and function of our

products. Wide-rangingtheoretical and practicalanalyses form the basis ofthis work, which ensuresthat all steps from pur-chasing to productionto installation functionwithout a hitch. Analysis,design and planning docu-ments are inspected onlyby employees who havenot participated in theircompilation.

Qualityassurance

Quality assurance


7/110

7

Meticulous inspectionof supplies

We cooperate only withsuppliers who can provideevidence of an efficientquality assurance system.We demand inspectioncertificates to DIN EN 10204for semi-finished goods,sheet metal and pipes.Regarding other supplies,we demand certificates depending on respectiveapplications that allowtraceability. Goods areinspected upon arrival and

in the materials testinglaboratory to make surethat the supplies meet ourorder and acceptancecriteria. Only inspected,faultless materials areadmitted into production.

Quality-orientedproduction

Our qualified employeesguarantee the quality ofour products, which they

produce on a great varietyof equipment accordingto proven productionprocesses.

Precise procedure andwork instructions supporttheir work.

An internal inspection de-partment is responsible forinspecting and maintainingproduction plant. It is alsoresponsible for ensuringthat production is carriedout according to specifiedprocedures as well as in-spection directives

Assurance ofwelding quality

Welding is only performedaccording to written in-structions by welderswho hold qualifications toDIN EN 729. The most im-portant and most commonwelding methods arecarried out according tocertified weldingprocedures. Supervisorystaff meet the respectiverequirements according toAD Specification HP3.

Our company has beencertified as a manufactureraccording to AD specifica-tion HP0 carried out by the

German TV organization.The company is also quali-fied to perform weldingwork to DIN 18800.

Control of measuring andtesting equipment

Measuring and testingequipment itself is testedfor its precision and relia-

bility at regular intervals.The date of calibration isstated on control identifi-cation tags.

Supervision of thequality assurance system

Audits carried out at regu-lar intervals check whetherthe quality assurancemeasures laid down arebeing carried out by alldepartments involved, andwhether they are effective.

Product quality

Inspection of goods re-ceived as well as in-processinspections, functional andfinal inspections of thefinished goods are integralelements of the qualityassurance system.

If requested, we includematerial certificates as wellas final inspection andtesting reports with ourconsignments for docu-mentation purposes.

Besides standard tests,such as load/travelbehaviour of hangers,dimensional and visualinspections and inspectionof markings, special testscan also be arranged.

Qualityassurance


8/110

8

The design of the hangersand accessories requiredis performed accordingto the relevant technicalrules, specifications andstandards. Safety marginsto the yield point of thematerial, which are guar-anteed for all loadbear-ing parts under nominalload conditions, are oneessential design criterion.

We can therefore ensurethat in the case of an over-load, as may occur in pick-ling, hydraulic pressuretests or starting up withnon-steady-state tempera-

ture profiles in the pipes,there will not yet be anypermanent deformationsof the supports. Evenextreme overloads, asin case of water hammer,are highly unlikely to causefractures in the supports.This is ensured by de-formable structures whichare able to absorb exces-sive overload shocks byyielding without fracture.However, after such over-loads, the supports mustbe inspected.

Standards for design

Basic standards for ourdesign work are the VGBstandard R510 L (1996)and KTA 3205.3 (1989)standard supports.Furthermore, the following

German and foreign stan-dards are considered:

DIN EN 13480 Metallicindustrial piping

AD data sheets for

pressure vessels (D) DIN 18800, Steelstructures (D)

TRD, Technical Rulesfor Boilers (D)

ANSI B 31.1/3 (USA) ASME, Boiler and pres-

sure vessel code, sec.III, subsection NF (USA)

MSS, StandardPractices: 58, 69, 77,89, 90, (USA)

BS, British Standards(GB)

If required, compliance indetail is checked by us.

Suitability tests

Hangers and accessorieshave been tested for theirapplicability in powerplants in tests accordingto VGB standard R510 L(1996) and KTA 3205.3.Besides a quality audit,this includes an inspectionof the design and calcula-

tion documents and verifi-cation of material suitabilityas well as function, load

Designandsuitabil

ity

Design and suitability


9/110

9

Thehangersystem

The hanger system

Our standard range ofhangers, supports andaccessories is designed inthe same way as our totalproduct range: as anextensive, appropriatelycoordinated and compre-hensive system.

This concept is based ondecades of practical expe-rience, continuous, intensecooperation with planners,users and inspectionbodies, and trendsettingdevelopment work result-

ing in a large number ofpatents.

In order to make designand selection easy andreliable, we offer standardranges with options,allowing quick and eco-nomical adaptation to therespective requirements.

Optimum combination ofcomplete assemblies

The system includes allcomponents required forrigid or movable assem-blies, from the connectionto the overhead supportingstructure to the suitablepipe clamp. Installation

dimension E is specifiedfor all components, whichcan easily be added up togive the total dimension ofthe support assembly.

Appropriate attachmentsfacilitate hanger design

Different attachments forvariable spring and con-stant hangers are at thedesigners disposal.Furthermore, the clamptype suitable for eachapplication can be selected

from horizontal pipe clampsand riser clamps coveringa wide range of nominaldiameters and nominalloads.

Load groups allowreliable planning

The load groups of theconnecting parts combineelements with equal nomi-nal load FN, also consider-ing the correspondingthread diameter. The re-spective load group (LGV)

is indicated on all variablespring and constant hang-ers and is part of thedesignation.

Support assemblyprogram

We have developed thesupport assembly program

(with inter-faces to PDS and PDMS)in order to automate yourdesign work. This programcan be made available to

the designer if required(see Planning anddesign, pages 3235).

Support assembly with variablespring hanger

Support assembly with base-mounted constant hanger

Double support assembly withvariable spring hangers andtrapeze


10/110

10

Variable spring

hangers/Variable springsupports

Constant hangers/Constant supports

Connecting parts

Horizontal clamps/Pipe shoes

Riser clamps

Mounting partsfor sway supports/Trapezes

Thehangersystem

Connections

FDT

KVD

FHD

KHD

ZLN

ZGM

HZN/ HZV/HZS

VBK

MSN MBS

VKK VKR

HGN/HGVHDN/HDV/HDS LTDHBN/HBV/HBS LUR/LUS

ZSM ZOM ZHM ZRM ZLM ZMM/ZMI

ZLK ZKN ZKK ZVN/ZVV/ZVS ZPK

KHS KVS KSR KSP

FHG FHS FSS/FSP FSG

VSR/VPR

ZTN

Series

Series

Series

Series

Series

Series

Series


11/110

11

Thehangersystem

SeriesName for a particular hangerrange as part of the prod-uct range, consisting ofthree characters which

derive from the Germanname for the series; it ispart of each type designa-tion (see The productrange, page 26).

Example:FHD is the German abbre-viation for a variable springhanger with double lug.

Load group (LGV)Categorizing term forconnecting parts, basedon the respective threaddiameter. Nominal load

and design safety factorare the same for all partsof one load group; the loadgroup is part of the typedesignation of hangers,supports and connectingparts.

Example:Load group 36 includes allconnecting parts withthread diameter M 36 orsuitable connecting parts;its nominal load isFN = 70 kN (see tableabove).

VH sizeCategorizing term forvariable spring hangersand supports. All variablespring hangers with the

same nominal load FN,irrespective of series ornominal travel, have thesame VH size; it is part ofthe type designation ofvariable spring hangersand supports.

Example:FHD 07... refers to theseventh size of variablespring hangers with doublelug; their nominal load isFN = 20 kN (see table ofVariable spring hangers,page 37).

CH sizeCategorizing term forconstant hangers andsupports. Hangers withthe same mathematical

product of nominal loadand nominal travel (FN x sN)have the same CH size;the CH size is part ofthe type designation ofconstant hangers andsupports.

Example:KHD 08... refers to theeighth size of constanthangers, horizontal, withdouble lug (see tableof constant hangers,page 51).

Load group LGV 12 16 20 24 30 36 42 48 56 64 72 80 90

Nominal load FN in kN 7 12 20 33 50 70 100 132 180 240 300 400 500

Connections Thread (DIN) M 12 M 16 M 20 M 24 M 30 M 36 M 42 M 48 M 56 M 64 M 72 M 80 M 90diameter (inch) 1/2 5/8 3/4 1 11/8 11/2 13/4 2 21/4 21/2 23/4 3 31/2

Bolt diameter 12 16 20 24 33 40 45 50 60 70 80 90 100

Variable Nom. load FN in kN 7 12 20 33 50 70 100 132 200 280 400 500

VH size 01-05 06 07 08 09 10 11 12 13 14 15 16

Constant Max. permissiblehangers required load FS1) in kN 6 10 17 29 43 61 87 115 157 209 261 348 435

Potential

CH size2) 01-09 05-11 07-12 08-14 09-15 11-16 11-17 13-18 14-19 16-19 17-20 18-20 19-20

1) 15% adjustability reserve considered2) see table on page 53

Load groups of connecting parts

Definitions

springhangers


12/110

12

Theproducts

The products

This chapter containsdetailed descriptions ofhangers, connectingparts and clamps. It alsoexplains their essentialcharacteristics and pointsout their usefulness inpractical applications.


13/110

13

TheproductsSprings

Relaxation(Setzverlust)in%

0

2

4

6

8

10

400 500 600 700 800 900

20 C

80 C

20 C

80 C

kaltgesetz t

warm gesetz t

Schubspannung in N/mm2

Springs

The high-grade springsfor HYDRA variablespring hangers andconstant hangers retaintheir original supportingproperties practicallyunaltered even duringa long service life.

We use helical coil springsto DIN 2095 and DIN 2096acting as compressionsprings as the load-bearing elements of theHYDRA variable springand constant hangers.They are cold- or hot-

coiled, depending onthe wire diameter.

After coiling and temper-ing, the hot springs areclosed to their solid heightseveral times. Afterwards,they are shot-blasted withsteel balls to harden thesurface. A 100% crackdetection test guaranteesthat they are completelyfree from cracks.

Standard versions aregiven an impact-resistant,highly elastic alkyd varnishcoating after priming with aphosphate coating. If re-quired, special treatmentssuch as plastic coating ortreatment with zinc dustpaint can also be carriedout. For outdoor use, werecommend an additionalterrosone coating.

The safe, buckling-resis-tant design, the certifiedproduction methods withspecial heat treatmentand the meticulous finalinspections guarantee apermanently linear force-travel characteristic.

Relaxation

Relaxation is a loss ofstrength for a constantfixity length, and dependson stress, temperature andtime. It can be shown asthe percentage of loss ofstrength in relation to initialstrength. A suitable specialheat treatment consider-ably reduces the relaxationof our coil springs, com-pared with conventionalcoil springs (see diagram).

The stress range duringoperation of the springsused in HYDRA variablespring and constant hang-ers is so favourable thateven at a constant tem-perature of 80 C noappreciable relaxationoccurs.

Production method

Cold coiling

Hot coiling

Wire diameterin mm

< 8

8

Material

High-grade steelto DIN 17223 grade C (1.1200)

Stainless steelto DIN 17221 50 Cr V 4 (1.8159)

Relaxation of helical coil springsReference values for long-term behaviour at different ambienttemperatures

Hot setting

Relaxa

tionin%

Coldsetting

Shear stress t in N/mm2


14/110

14

TheproductsVariable

springhangersandsupports

Traglastin%

0

20

40

60

80

100

0 20 40 60 80 100

Hngerweg abwrts in %

Variable spring hangers and supports

HYDRA variable springhangers and supportsare pipe supports thatallow movement with alinear, varying load-carry-ing behaviour; the loadchanges in proportion tothe hanger travel.

Operating principle

The load-carrying behav-iour corresponds to thecharacteristic of thespring used, i.e. the loaddecreases during upward

movement of the springplate and increases duringdownward movement.

These devices, which aremore economical thanconstant hangers, are usedin all cases in which thevertical movement to beabsorbed does not exceed60 mm and the pipeworksupported can sustain achange of load betweeninstallation and operation

without any difficulty; 25%of the operating load isnormally regarded as apermissible load variation.

The non-buckling spring,the special shape of thespring plate and the rigidconnection betweenthreaded rod and springplate more or less avoidany unwanted lateralforces on the spring plate.

Result:

HYDRA variable springhangers exhibit extremelylow friction values andminimal deviation from thetheoretical load.

Load/Travel diagram

FHD FHG

FHS

FSS/FSP

FSG

FDT

Head platewith double lug

Spring platewith stop nibs

Spring housing

Compressionspring

Name plate withtravel scale andload data

Base plate

Safety ring

Turnbuckle

Threaded rod

Loadin

%

Downward hanger travel in %


15/110

15

TheproductsVariable

springhangersandsupports

Permanent springprotection

The spring is enclosed in ahousing which protects itfrom mechanical damage.

The spring plate centresthe spring and preventsfriction between springand housing.

Nibs on the spring plateact as stops to preventthe spring being closedto its solid height at over-load and, as a result, from

damaging the surfaceprotection.

Optimum corrosionprotection

Before assembly, thecomponents of the hangercan be protected againstcorrosion, either by elec-trogalvanizing, hot-dipgalvanizing, a plastic coat-ing or painting.

The final assembly of thepatented hanger is carriedout by positive lockingaction; the surface protec-tion is thus not damaged,neither by welding nor by

mechanical action.

The name plate riveted tothe housing, which alsoacts as a travel scale, ismade of stainless steel;the matt surface and blackinscription ensure legibility.

Easy installationand operation

All types can be connectedsimply and securely to thesupporting structure.

The cold and hot statesare clearly indicated on thename plate by colouredtriangles (red and blue).The respective loads arestamped next to them.

A patented, infinitely vari-able travel stop keeps thespring plate in position (in

both directions) and canonly be loosened at thecorrect load.

The load can be adjustedeasily by turning the turn-buckle (adjusting nut onseries FHS, FSS, FSP andFSG), with the spring plateand its nibs preventingrotation.

Subsequent adjustment ofthe travel stop is possibleat any time in any positionrequired because the travelstops with their adjustablelaminations can be perma-nently fixed to the housingto prevent them being lost.

All devices are absolutelymaintenance-free no wear and tear and noneed for spare parts!

Technology you can rely on


16/110

16

TheproductsConstanthangersandsupports

Constant hangers and supports

HYDRA constanthangers and supportsare pipe supports thatallow movement with aconstant load-carryingbehaviour; the load re-mains hardly unchangedover the hanger travel.

Operating principlen

In the HYDRA constanthangers the varying forceof the compression springis transformed into a con-stant force at the loading

point by means of a suit-ably adjusted lever mecha-nism.

These devices, whosedesign is more complexthan that of variable springhangers, are required whengreater vertical movements,60 mm and more, are to beabsorbed, or if load devia-tions must not exceed5% to avoid undue strainon component connec-

tions or critical pipelines.

The lever principle

The lever dimensions ofthe HYDRA constanthangers have been opti-mized such that therequired constancy of theload is ensured over thewhole range of adjustment,even after any load adjust-ments after installation.

Furthermore, the greatadvantage of constanthangers, based on thelever principle, is thatthe full hanger travel isnot reduced if the loadis adjusted.

they have been adjusted,or a subsequent loadadjustment (average loaddeviation 3%).

Traglast(Sollast)in%

0

20

40

60

80

100

0 20 40 60 80 100

Hngerweg (Nennweg) abwrts in %

120

Mgliche

Lastjustierung

1

5%

Result

HYDRA constant hangersexhibit very good loadconstancy throughout thetravel range, irrespective ofthe required load to which

Load/Travel diagram

KHD

KVD

KHS

KSR

KVS

Name plate

Sphericalbearing

Turnbuckle

Travel scale with coldand hot positions

Travel stop,infinitely variable

Lever mechanism

Load adjustment

Adjustmentscale

Coil spring

Spring housing

Spring plate

Base plate

Guide

Load adjustment

Lever arm

Springforce

Spring lever arm

Main axisLoad

Hanger travel (nominal travel) downwards in %

Possibleload

adjustment:

15%

Load(requiredload)in%


17/110

17

TheproductsConstanthangersandsupports


Permanent protectionfor the spring

The springs are protectedagainst mechanical dam-age by housings whichhave inspection openingson only the bottom or theside.

The non-buckling springis positioned in centeringdevices and guided by thespring plate so that frictionbetween housing andspring is avoided.

Stop nibs prevent thespring being closed to itssolid height at overloadand, as a result, fromdamaging the surfaceprotection.

Optimum corrosionprotection

Various means are used before assembly to pro-tect all ferritic parts against

corrosion, e.g. painting, electrogalvanizing, hot-dip galvanizing, plastic coating.

The final assembly of thehanger is carried out bypositive locking action; thesurface protection is thusnot damaged, neither bywelding nor by mechanicalaction.

The pivots as well as thepatented retainers holdingthe pivot are made ofstainless steel (1.4541).

The name plate riveted tothe housing is made ofstainless steel (1.4541);it is a matt surface withblack inscription.

Easyinstallation

The design of all types ofconstant hanger allowssimple and secure con-nection to the supportingstructure for all require-ments; low weight facili-tates installation.

Hot and cold states areclearly indicated on thetravel scale by colouredtriangles (red and blue).

A practical percentage gra-

dation on the travel scale1)clearly indicates workingtravels and travel reserves.

A patented, infinitely vari-able travel stop, whichworks in both directions,keeps the hanger in theinstallation position andcannot be released untilthe hanger is adjusted tothe actual load.

The travel stop may be

fixed in any hanger posi-tion at any time becausethe infinitely variablemechanism cannot bedetached from thehousing.

Connection to the load isby means of a turnbuckle,which is turned until therequired load FS is reachedor the pipe to be supportedhas reached the desiredposition.

With constant supports,adjustment is carried outby means of adjustingnuts.

Easy loadadjustment

A load adjustment with easyaccess, easy operation andclear indication allows thefactory-adjusted requiredload FS to be adjusted tosuit the actual conditions.

The design of the load ad-justment mechanism meansthat only one screw has tobe adjusted.

The adjustment range is atleast 15% of the required

load (wider ranges are pos-sible on request).

The load adjustment neverreduces the working travel ortravel reserves.

Low-friction bearings

All rotating bearings usedin constant hangers are acombination of groundstainless steel axles and

PTFE compound bearings,which guarantee minimumfriction.

Axle retainers made ofstainless steel, which alsoform the running surfacesof the axial bearings, en-sure permanent protectionagainst dirt and corrosion.

Spherical bearings at theloading point also withlow-friction PTFE surfaces allow the direction of loadapplication to change byup to 4 in any directionwithout any significantchange in the load devia-tion.

All devices are absolutelymaintenance-free nowear and tear and noneed for spare parts!

1)A mm scale showing thedistance travelled directly canbe supplied on request.


18/110

18

TheproductsConnec

tingparts

Connecting parts

Apart from the pipe sup-ports already described,such as variable springand constant hangers,accessories are availableto create the variousassemblies betweenthe supporting steelstructure and the partsupporting the pipe the pipe clamp.

Function

Connecting parts areattached to steel struc-tures by welded or clamp-ing lugs and square plates,and threaded parts liketurnbuckles, eye nuts andclevises in combinationwith threaded rods tobridge the distances.

Furthermore, connectinglugs are also available tofacilitate the attachmentof cold connecting partsto hot pipe clamps at

higher operating tempera-tures.

Using HYDRA clampinglugs, there is no needfor welding; their designallows them to be adjustedto suit different beamflange dimensions.

Safety

HYDRA connecting partsare clearly categorized intoload groups according toour hanger system (page 9),based on metric threaddiameters; these partscorrespond to clearlydefined nominal loadswhich are approved forambient temperatures notexceeding 80 C.

This facilitates selection ofthe parts suitable for therespective requirements and

guarantees the requiredload-carrying capacity.

The certified threaded partsare precise forged parts withdimensions up to M48.Confusion is avoided by amarking which indicatesload group, material andmanufacturer. Threadedrods have rolled threads,which avoid sharp notchesand stress concentrations.

Materials

For all connecting parts weuse DIN EN materials asfollows:

1.0038/S 235 JRG 2 forsheet metal parts or steelsections

1.0460/C 22.8 for forgedparts

1.0038/S 235 JRG 2 forthreaded bars

1.0038/S 235 JRG 2 1.5415/16 Mo3 or

1.7335/13 CrMo 4-5and others for

connecting lugs

Corrosion protection

Corrosion protection is astandard feature of allconnecting parts. Weldinglugs and square plates aregiven a coat of primer; allother parts are electrogal-vanized and given a yellowchromate finish, an espe-cially favourable protection

for all threads. Other suit-able types of corrosionprotection can be agreedupon as required.


19/110


20/110

20

Function

Horizontal clamps areused as supports for pipesinstalled horizontally.

Apart from two-boltclamps to DIN 3567 thisseries has been extendedto DN 1200 the seriesof flat steel clamps alsoincludes medium andheavy-duty types, basedon technical requirementsand considering economi-cal production facilitiesand reasonable use of

materials (fig. 1).

We also offer three-boltclamps (fig. 2) with longerlugs to suit the tempera-ture range and the neces-sary insulation thickness.

In case of higher loads,the patented grip clamps(fig. 3), produced in twoload series, and the U-typeclamps are available. Dueto their optimum design,

they are characterized bylow load-to-weight ratios.

Optimum design andproduction

Flat steel clamps arecold-formed or hot-formed,depending on the materialsused and their thickness.Subsequent heat treatmentis carried out if required.

Inherent weaknesses andincreased residual stressescan thus be reliably avoided.

An optimum bending radius

(fig. 4) between clampstrap and clamping lugreduces the degree ofdeformation and bendingstresses due to workingconditions. This increasesthe load-carrying capacity.

The design of the gripclamp means that onlyminimal material formingis necessary. We cantherefore dispense withsubsequent heat treatment.

Notching the support lugnear the pipe obstructs theheat flow, which leads tolow temperatures in thesupporting parts and

extremely low heat losses.

The double rods surround-ing the pipe and their con-trollable tightening torqueensure optimum forcetransfer to the pipe (fig. 5).

TheproductsHorizon

talclamps

HYDRA horizontal clamps

Easy installation

The manufacturing toler-ances of our flat steelclamps are such that theystill fit exactly in the caseof maximum pipe toler-ances. For minimumtolerances, contact isensured by tighteningthe bolts.

The gap between the twohalves of the clamp allowseye nuts or connecting lugsto be fitted as required.


Clamp production line

The pivoted, rotating rodsof the grip clamp, insertedinto the support lugs, caneasily be placed aroundthe pipe, thus facilitatingmounting.

The threaded rods of thegrip clamp can be adaptedto cope with the tolerancesof the specified pipe diam-eter and any ovalness ofthe pipe cross-section.

Figure 1

Figure 2

Figure 3 Figure 4 Figure 5


21/110

21

HYDRA riser clamps

Function

Riser clamps are used assupports for vertical pipes.

Formed clamps (fig. 1)are suitable for the smallersize and lower nominalload ranges (up to DN 300and FN = 40 kN). The loadtransfer to the clamp isby means of shear lugswelded to the pipe becausethe clamp fits around thepipe with some play.These clamps, whoseprofile dimensions are

determined by torsion, areeconomical solutions onlyin the case of lighter loads.

Box-type clamps (figs 4and 5) are suitable for higherloads. Owing to their idealload-carrying form, theyhave the smallest possibleload-to-weight ratio.

The connections requiredfor the resulting loads atthe temperatures expected

are achieved by varioussupport lugs and endplates

Box-type clamps aredesigned for supportingthe pipe by way of fourshear lugs (fig. 2) or twoshear pins (fig. 3). Shearpins are required whenpipes with rigid supportsare expected to deviatefrom the vertical duringoperation. Please read therespective notes in thechapter Planning anddesign.

Optimum design andproduction

Formed clamps are cold-formed or hot-formed,depending on dimensionsand materials used.Subsequent heat treatmentis carried out if required.

The design of the clampsallows mounting with agap between clamp andpipe. Direct contact withthe pipe is not required.

The bolted connectionbetween the two halves ofthe clamp prevents torsion,achieves defined loadingconditions and avoidsadditional loads causedby a temperature-relatedincrease in diameter.

Easy Installation

Formed clamps, whichessentially consist of twostraps, can be mountedvery easily because theyleave a small gap whenenclosing the pipe. Thegap between the twohalves of the clamp canbe reduced to a certainextent during installation.This ensures even contactbetween the four shearlugs and the riser clamp.

TheproductsRisercl

amps


Box-type clamps consistof torch-cut parts, somebent, connected bybolts. The intentional gapbetween clamp and pipereduces the temperatureat the points of maximumstress.

Box-type clamps, whichare made of several light-weight parts, are very easyto fit. The parts are easilyfitted together and securedwith just a few bolts.

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5


22/110

22

Theapplications

The applications

HYDRA variable springand constant hangershave been employed inthe most diverse indus-trial installations andhave been operatingwithout any cause forcomplaint for morethan 20 years.

Constant progress indevelopment and ongoingimprovements have madeour pipe supports intohigh-quality productswhich make an essentialcontribution to plant safety.

All pipes subjected tohigh service temperatures,especially high-pressuresteam pipes, but alsosteam boilers and chemi-cal reactors, place highdemands on the pipesupports; loads have tobe carried and unduedeformations have to beavoided.

HYDRA variable spring

and constant hangers withtheir accessories meetthese requirements duringthe entire service life of theplant maintenance-freeand with consistent opera-tional reliability.

HYDRA variable spring and constant hangers in district heating systems

HYDRA constant hangersin outdoor use on a districtheating pipe.

HYDRA variable springhangers on an exteriorpipe in a refuse incinera-tion power plant and ina boiler room.


23/110

23

Theapplications

HYDRA double hangerwith trapeze in thermalpower stations, a constant

hanger in a verticalarrangement with baseplate, and a constanthanger in a horizontalarrangement with doublelug as well as a variablespring hanger application.

HYDRA variable spring and constant hangers in thermal power stations


24/110

24

Theapplications

HYDRA constant andvariable spring hangers ofdifferent sizes on supply

lines, constant hangersin vertical and horizontalarrangements on thehigh-pressure steam pipesin a major power station.

HYDRA variable spring and constant hangers in major power stations


25/110

25

Theapplications

HYDRA constant hangers,variable spring hangersand variable spring sup-ports in chemical plantsand a large constanthanger in a lignite-firedpower station.

HYDRA variable spring and constant hangers in industrial plants


26/110

26

The product range

The standard productssummarized in this partof the catalogue form amulti-purpose system forsolving all problems metwith in the practical appli-cation of pipe hangersand supports.

The extensive coordinatedproduct range allows con-struction of continuousassemblies for all typesof applications from thesupporting steel structureto the pipe connection,with horizontal and riser

clamps.

Options on the standardtypes facilitate adaptationto each individual situation.

All parts are assigned toload groups and, withinthese groups, can becombined to form asupport assembly (seeThe hanger system,page 9).

Theproductrange

Typedesignations

Type designation

The chosen type designa-tions consist mainly ofcodes clearly indicatingthe characteristics ofthe pipe support, thusfacilitating selection.They indicate type, size,connecting thread andmaterial, plus otherfeatures.

Type designation scheme

The type designation con-sists of three parts:

1. series, defined by threecharacters

2. nominal size, definedby several groups offigures

3. option code, defined byfigure codes, separatedfrom the nominal size byhyphens

Type designations withoutoption codes refer to stan-dard versions.

. .

Series Nominal size Optioncode

Designation principle

Option code

1) Variable spring and constant hangers only2) Connecting lugs, pipe shoes and clamps only

Travel stop1)

0

1

0

12

3

4

without travel stop

with travel stop

none (blank)

electrogalvanizedhot-dip galvanized

primed

other(please specify exactly)

to DIN ISO (metric)

inch thread

1

2

37

16

13

10

91

41

7180

1.0038/S235JRG2(RSt 37-2)

1.5415/16Mo3

1.7335/13CrMo4-5

1.7380/10CrMo9-10

1.4903/X10CrMoVNb9-1(P91)

1.4541/X6CrNiTi18-10

1.4571/X6CrNiMo17-12-21.4958/X5NiCrAITi31-20(Incoloy 800H)

Connecting thread1)

Materials2)

Surface protection


27/110

27

Series(Meaning of characters, depending on position)

Theproductrange

Typedesignations

Product Groupposition 1

Variable spring hangers/Spring supports

F hanging H double lugthreadcontinuous rod

DGS

double D with trapeze T

Design/Partposition 2

Connection/Othersposition 3

supporting S support plate, steelsupport plate, PTFE coatingspherical sway head

SPG


Connecting parts(accessories)

Horizontal clamps

Pipe shoes

K

Z

H

L

V

horizontalvertical

HV

double lugbase plate

DS

welding lugclamping lug

L

K

normal (for variable spring hangeror rigid support assembly)for constant hanger

N

K

connecting lug V normalmediumheavy-duty

NVS

square plate P spherical washer K

clevis with boltturnbuckleeye nutrod coupling

GSOH

metric thread (DIN ISO)inch thread

MI

threaded rodright-hand thread

threaded rodleft-/right-hand thread

R

L

metric thread (DIN ISO)inch thread

MI

nut (normal) M metric thread (DIN ISO)inch thread

MI

trapeze T normal N

intermediate piece for support Z spring supportconstant support

FK

two-bolt clampthree-bolt clampgrip clampU-type clamp

ZDGB

shear pinmediumheavy-duty

NVS

U-shapeT-shape

UT

shear pinheavy-dutydouble clamp

RSD

Riser clamps formed clampbox clampbox-type clamp for supportbox-type clamp for support, with PTFE

BKSP

shear lugshear pin

KR

MMounting parts forsway supports

dynamic load clamp S normal N

General general special design according to drawing Z

bracket B welded S

supporting S roller supportsupport plate, PTFE coating RP


28/110

28

Type designations for products

Theproductrange

Typedesignations

Variable springhangers/Spring supports

Example

Series

F H D 1 0 . 2 0 0 . 3 6 - 1 . 1 . 1

F D T 0 6 . 1 0 0 . 1 2 0 0 . 1 6 1 . 1 . 1

K H D 1 0 . 2 0 0 . 3 0 1 . 1 . 1

Z L N 1 6 1

Z K N 1 6 . 1 6 0 . 1 3 0 2

Z V N 0 5 0 . 2 3 0 . 1 6 1 6 . 0

Z G M 1 6 11) Insert 00 if not relevant (e.g. for spring supports). 2) Nominal load of bracket for FSG series.

Sway support (FSG)and double hangerwith trapeze (FDT)

Example


Example

Lugs/Plates(except connectingand clamping lugs)

Example

Clamping lugs

Example

Connecting lugs

Example

Threaded parts

Example

.

. .

. . .

. .

. .

. .

. .

.

.

. .

VH size

VH size

Nominaltravel

Nominaltravel

VH size

Load group (LGV)

Surface protection

Load group (LGV)

Flange width

Flange thickness x 10

Surface protection

Width Installation dimension E

Load group (LGV)Material

Surface protection

Load group (LGV)

Surface protection

Nominaltravel

Load group (LGV) 1)

Nominal length/Span

Load group (LGV) 1)

Travel stop

Threaded connection

Surface protection

Load group (LGV) 2)

Travel stop

Threaded connection

Surfaceprotection

Travel stop

Threaded connection

Surface protection

Series

Series

Series

Series

Series

Series


29/110

29

Theproductrange

Typedesignations

Z R M 1 6 . 2 0 0 0 1

H Z V 0 3 5 0 3 7 . 3

H G N 0 5 0 0 . 5 8 0 . 2 4 1 3 . 0

V B K 0 0 4 0 . 0 1 6 . 0 4 0 0 . 1 2 1 6 . 0

Z T N 2 4 . 1 2 0 0 3 7 . 2

L U R 5 0 0 . 2 1 5 3 7 . 0

3) Specify outside diameter of pipe if non-standard. 4) Nominal load of bracket for MSN series.

Threaded rods

Example

Two-bolt clamps

Example

Three-bolt clamps/Grip clamps/U-type clamps

Example

Riser clamps/Dynamic loadclamps (MSN)

Example

Trapezes

Example

Pipe shoes

Example

.

.

. .

.

. . .

.

. .

.

.

Series

Load group (LGV)

Nominal diameter3)

Nominal diameter3)

Length

Material

Nominal load

Nominaldiameter3)

Nominal load

Span/Installation dimension E

Load group (LGV) 4)

Material

Surface

protection

Load group (LGV)

Material

Surface protection

Surface protection

Surface protection

Series

Series

Series

Series

Load group (LGV)

Span

Material

Surface protection

Material

Surface protection

Series

Nominal diameter3)

Height (H)

0


30/110

Connecting parts/Accessories


Spring hangers/Spring supports

30

Theproductrange

Overview

ofcomponents

Product Name Series Nominal sizes Options

Spring hangers with double lug with threaded connection for continuous tie rod FHS

FHDFHGFHS

Spring Supports with support plate, steel with support plate, PTFE with spherical sway heads

Connecting parts for

sway support dynamic load clamp bracket

Constant hangers horizontal with double lug vertical with double lug horizontal with base plate vertical with base plate

FSSFSPFSG

Double hanger with trapeze FDT

MSNMBS

KHDKVDKHSKVS

0.16 500

0.16 100

0.32 200

35 100

Nominalload kN Nominaltravel mm

Nominalload kN

Nominaltravel mm

Nominalload kN

Load groupmm

50 500

100

50 200

0.5 500 50 500

Constant supports with support roller with support plate, PTFE

KSRKSP

0.5 320 50 350

Intermediate piece Spring support Constant support

ZZFZZK

0.5 500

Travel stop with travel stop without travel stop

Surface protection hot-dip galvanized primed

Thread to DIN ISO (metric) inch thread

Surface protection hot-dip galvanized primed

Lugs/Plates welding lug, normal welding lug for constant

hanger

ZLNZLK

7 500 12 90

clamping lug, normal clamping lug for constant

hanger

square plate with sphericalwasher

ZKNZKK

ZPK

7 100 12 42

Surface protection primed blank

hot-dip galvanized

7 132 12 64 primed blank

Threaded parts clevis with bolt turnbuckle eye nut rod coupling

ZGM/ZGIZSM/ZSIZOM/ZOIZHM/ZHI

Threaded rods

with right-hand thread with left-/right-hand thread ZRM/ZRIZLM/ZLI

7 500 12 90 Surface protection electrogalvanized hot-dip galvanized

(limited)

Thread to DIN ISO (metric) inch thread

Overview of components


31/110


32/110

32

Planning and design

General

The purpose of movablepipe supports is to ab-sorb the pipe load safelyand at the same time to ensure the pipes canmove as required.

Hangers and supportsmust be used if pipes,piping systems andother components attheir support points aresubjected to verticalmovement between thecold installation state

and the hot operationalstate.

The distinction betweenpiping systems with orwithout expansion joints isonly important with respectto the design of hangersdue to the fact that pipeswith expansion joints cangenerally be examined insections and that forcesresulting from the elasticityof the system are of littlerelevance compared withthe forces due to weightalone. These aspects easethe planning work consid-erably.

Systems in which thermalexpansion must be ab-sorbed by pipe legs, e.g.live steam pipes in coal-fired power stations, canbe analysed with sufficientprecision only by calculat-ing the stresses in thewhole system in severalparallel calculation process-es with different loadingcases in order to ascertainthe type and arrangementof the hangers.

In these systems, elasticforces are superimposedon the forces due to weight.The magnitude of theformer is influenced by theproperties of the hangersin use. An iterative designprocess is therefore re-quired.

Hanger behaviourin reality

In order to be able to makea sufficiently reliable pre-diction of the pipe behav-iour in reality by means ofcalculations and analyses,the designer must be givena reliable basis for his cal-culations which guaranteesthat the hangers to beinstalled will behave inaccordance with the designassumptions during thelifetime of the plant.

The tolerances defined inthe acknowledged stan-dards (e.g. VGB-R 510 L,KTA 3205.3) therefore allowfor maximum deviations of

5% from the theoreticalloads for variable springand constant hangers, asshown in the diagramsbelow. Furthermore, suffi-cient load adjustmentpossibilities and travelreserves are required to beable to adjust the devicesto the actual load andtravel conditions afterinstallation.

HYDRA variable springand constant hangersmeet these requirements as suitability tests have

shown and as inspectionsand tests of actual con-signments constantlyprove.

Planninganddesig

n

LoadFin%

0

100

0 Ha nger tra vel s s N

Fmin

Fw, s

Fk,s

S pring t ravel x0 xN

Freal, 0

Freal, u

+ 5%

-5 %

sR,to p

ss ,(upwards)

sR,bottom

FN

perm

issible

toler

ance

range

1)

DefinitionsInitial load: FminNominal load: FNRequired load: Fk, s(cold load)Required load: Fw, s(hot load)

Spring rate:

Spring travel, total: xNNominal travel: sNRequired travel: sSTravel reserve: sR

FN FN Fmin

xN sN=

Variable spring hangers and supportsLoad/Travel characteristics, tolerances

1) Permissible tolerances for angled load application: 6%

R =


33/110

33

Condition for average loadsetting:

Nominal travel: sNRequired travel: ssTravel reserve: sR

Design criteria forhangers:

Loads to be carried frompipe calculation (requiredload)

Dead loads of trapezes,pipe shoes and hangerhousings to be carried(if applicable)

Vertical movement to beabsorbed (required travel)

Direction of verticalmovement from cold

to hot (up/down)

Simultaneous horizontalmovement (determineslength of or angled loadapplication on supportassembly)

Type of connectionbetween hanger and steelstructure (suspended orbase-mounted, welded/bolted/clamped)

Levels for hanger/supportarrangement (determinestype of connection)

Distance from pipe centre-line to steel structure(determines supportassembly design)

Location, e.g. indoors/outdoors (determines typeof corrosion protection)

Design criteria for pipeclamps:

Operating load at supportpoint

Pipe diameter

Temperature of medium(service, design, etc.)

Thickness of pipeinsulation

Orientation of pipe(horizontal, vertical)

Span between riser clamps

Materials of pipe clamps(e.g. austenite)

Normally, additional loadsresulting from hydraulicpressure testing or frompickling of high-pressuresteam pipes do not haveto be considered whenselecting hangers andclamps. Such loads arecovered by the overload

tolerances of hangers,clamps and connectingparts. All parts of ourhanger systems cansustain 2.5 times thenominal load withoutpermanent deformation(the temperature reductionin pipe clamps is takeninto consideration).

Further stipulations may benecessary in special cases,which may lead to specialtypes as described startingon page 102.

Planninganddesig

n

LoadF

0

0 Ha nger tra vel s

s stop bottom

Freal, average

Freal, 0 permissible tolerance range1)

+ 5 %

-5 %

+ 15%

-15%

s R sR

range

ofadjustment

FN

s N

Freal, u

FS

upwards

DefinitionsNominal load: FN(max. load ofconstant hanger)Required load: FsAverage loadset: Freal, average

Fs 0.02

Constant hangers and supportsLoad/Travel characteristic, tolerances

Consideration of loadtolerances and friction

For the calculation ofpiping systems, both loadtolerances and, in particu-lar, unavoidable frictionalforces have to be consid-ered. Even if such forcesare very low, they add upto have an effect on theoperational behaviour of ahighly flexible system causing considerable devi-ation from the calculatedbehaviour if they are nottaken into consideration as

force components actingopposite to the movement.

Unintentional changes topipe positions may be theresult, causing a risk ofcondensate accumulation,water hammer, unpre-dictable stress increasesand other problems.

Conditions for hangerand clamp design

Besides general conditionssuch as the applicableregulations, standards,specifications and docu-mentation, special criteria

for each support positionhave to be specified.

1) Permissible tolerances for angled load application: 6%

Fs Freal, average


34/110


35/110

35

Pipe clamps

The orientation of thepipes at their respectivesupport points determineswhether horizontal clampsor riser clamps are required.

The materials are selectedaccording to the clamptemperatures anticipated.Here, the temperature dropbetween the temperatureof the medium and thetemperature of the clampsection with the higheststresses must be consid-

ered to avoid unnecessari-ly large clamps (for furtherdetails see page 74).

The method of reducingthe clamp temperature byinserting thin pieces ofinsulation is not recom-mended because thesereduce the friction betweenclamp and pipe, thuschanging the design as-sumptions for the clamp.The lower part of the

clamp is more heavilyloaded and the resultingstresses can exceed thepermissible values.

Adequate dimensioning ofthe three-bolt clamps andgrip clamps and the con-necting lugs for the two-bolt clamps means thateven for the maximumpermissible clamp temper-ature, the temperature atthe adjacent connectingparts (eye nut or clevis)does not exceed 80 C.

For larger riser clamps,both shear lugs and shearpins are possible. Thelatter must be used forrigid supports with apotential angled positionof the pipes during opera-tion. Generally, it shouldbe ensured that definedconditions prevail in bothconnecting rods and at theshear lugs or shear pins of

the pipe.

You are therefore recom-mended to use shearpins for pipes with rigidsupports and shear lugsfor pipes with flexiblesupports, irrespectiveof any possible angledposition of the pipes.

The use of shear pins inconnection with variablespring hangers theoreticallyensures a stable support;a slight angle of the clamp,however, cannot be avoid-ed because of the frictionmoment in the shear pins.

With shear pins in connec-tion with constant hangersthere is always the risk ofthe riser clamp assumingsome undefined anglebecause the load is notdependent on any travel.

If for some reason the pipemust be supported byshear pins in conjunctionwith constant hangers,acceptable conditionscan only be achieved by

ensuring the hanger isvery well adjusted and byincreasing the verticaldistance between the twosuspension joints at theriser clamp and the shearpin axis. Thus, a sufficientrighting moment will occurif the clamp tilts.

The hole for the shear pinin the side piece of the riserclamp includes a notch.A piece of square sectionsteel can be welded to thelug to fit into this notchand so prevent rotation.

Assemblies

After selecting hangersand clamps, the assem-blies can be designed.

Based on the hanger type,the upper connection to

the supporting structure isdetermined first and then asuitable connection to thepipe clamp, including con-necting parts. Finally, thedistance between both willbe spanned by threadedrods, with intermediate rodcouplings if required.

Threaded rods should beordered overlong. They

can then be shortened tosuit the actual conditionson site.

Selection of the connect-ing parts required hasbeen considerably easedby our hanger system(page 9), which catego-rizes all connecting partsas well as hangers andclamps according to loadgroups.

The installation dimensionE specified for all productshelps in the combinationof parts to give the totallength of the supportassembly.

Support assemblyprogram

Our support assemblyprogramhas been developed tofacilitate design work.It has been speciallyadapted to the needsof designers. It is used inthe design and graphicpresentation of pipesupports.

This menu-driven programprovides flexible supportfor the design of complex

assemblies from upperconnecting point to pipeclamp, regardless of thetype of support (rigid,movable with variablespring or constant hangers,or double assemblies).

includesinterfaces to the PDS andPDMS 3D systems.This feature enables thesupport assembly generat-ed in to

be imported directly intothe respective 3D model,where collision checks canbe carried out quickly andaccurately.

Softwareis easy to use and somakes design workmuch faster and much

more reliable.

Planninganddesig

n


36/110

36

Standardproducts

Standard products

This chapter describesthe standard productswithin the completerange of hangers,including their essentialproperties, applications,possible options, andselection and designtables.

They are described in thefollowing order:

Variable spring hangers/Variable spring supports

Constant hangers/

Constant supports

Connecting parts

Horizontal clamps/Riser clamps


37/110

37

Standardproducts

Springhangers/Springsupports

Load/Travel diagram (principle)

The helical compressionsprings are installed witha prestress, meaning thatapprox. 30% of the nominalload FN is already availablein the upper hanger posi-tion.

The downward movementof the spring plate causesfurther compression of thespring and so the load isincreased linearly in accor-dance with the spring rate.

Main features

Suitable for use in industrialplants, both indoors andoutdoors, on ships andoffshore platforms (selectappropriate corrosionprotection).

Their suitability for use inpower plants has beenproven by tests to VGBR 510 L and KTA 3205.3standards.

The allowable ambienttemperature is 80 C.

Deviation from the theo-retical load/travel charac-teristics for a straight loadapplication is usually lessthan 3% (max. permissible5%).

Permissible angular devia-tion of tie rods in hangersis 4 in all directions (doesnot apply to variable springsupports).

In extreme cases 2.5 timesthe nominal load FN canbe sustained without per-manent deformation. Insuch cases, a non-presethanger travels downwardsto the lower position.

The travel stop can be

connected to the housingin order to ensure it remainsavailable for re-use later, ifnecessary

Maintenance-free no wear and tear, and noneed for spare parts!(For further information seeThe products, page 12.)

Operating principle

Variable spring hangersand variable spring sup-ports have loadbearingproperties which changeaccording to the travel.

each situation. (For furtherinformation see Planning

and design, page 32.)

HYDRA variable spring hangers/variable spring supports

Load gradation of HYDRA variable spring hangers/variable spring supports

01

02

03

04

05

06

07

08

09

10

11

12

13

14

15

16

0.1 0.2 0.5 1 2 3 5 10 20 30 50 100 200 300 500Lastbereich in kN

Lastgre

0.3

Load gradation

Just 16 VH sizes cover theload range from 0.16 to

500 kN. In this respect,a suitable gradation of

VH sizes, combined withsufficient overlaps, was

one of our main criteria.Types with nominal travels

of 50, 100 and 200 mm areavailable for each VH size.

This makes it easy to selectappropriate hangers for

Load

Travel

Load range in kN

VHsize


38/110

38

Standardproducts

springhangers/springsupports

HYDRA variable spring hangers/variable spring supports

Variable spring hangerswith double lug (includingbolt) are suitable for con-

necting directly to an over-head loadbearing structure only by means of weldedor clamping lugs withoutadditional connectingparts. The load can beset with the turnbuckle.

Variable spring hangerswith threaded connectionare suitable for installing at

the required level by insert-ing a suitable threaded rodas a vertical connection tothe overhead loadbearingsteel structure. This rod isconnected to the loadbear-ing structure by a clevisand a welded or clampinglug, or by using a squareplate with spherical washerand hexagonal nuts. Theload can be set with theturnbuckle.

Variable spring hangersfor continuous tie rods aresuitable for mounting on the

loadbearing steel structure,to which they are bolted.The load is transferred bythe continuous rod and thenuts. The load can be set byturning the nuts.

Variable spring supportswith support plate carryload from above. They are

mounted on the steelstructure by fixing thebase plate with bolts. Theload is transferred to thesupport plate of the springsupport by a sliding orinsulating shoe with a flatbearing surface. If lateralmovements are anticipated,a support with PTFE slid-ing plate (FSP series)should be chosen.

Differences in height canbe compensated for byusing an intermediatepiece.

Connection criteria for different series

FHD

use of these devices isacceptable only if theinherent stiffnesses ofthe components to besupported are sufficientto guarantee that they areheld in position during all

operating conditions.

Sway supports carry theload as a compressionforce and transfer it to theloadbearing structure viaspherical sway heads.Greater lateral displacementof the components to be

supported are thus possiblewith low lateral forces. The

A double hanger withtrapeze is suitable forsupporting pipes wherethere is little spacebeneath the loadbearingsteel structure. Pipes canbe fitted with a suitable

pipe shoe and then placed

on the trapeze. The loadcan be set with the turn-buckles.

FHG FHS FSS/FSP

ZZF

FSG FDT


39/110

39

Selection

The table below indicatesthe possible load-carryingcapacity (required load Fs)of each VH size dependingon the hanger travel andbased on the respectivenominal travel sN (50, 100or 200 mm). The maximumload corresponds to thenominal load FN of thevariable spring hanger.

The required travel of thevariable spring hanger cor-responds to the tempera-

ture-related vertical move-ment of the plant compo-nent supported.

The load variation betweencold and hot position, un-avoidable with variablespring hangers, causesadditional loads on the

component supported. Inorder to limit such addi-tional loads to approx.25% of the operating load,the recommended work-ing travels should not beexceeded (VGB-R 510 L).

In addition, travel reservesof at least 20% of therequired travel ss (but notless than 5 mm) should beadded to each end position(VGB-R 510 L and KTA3205.3 requirements).

In economic terms bear-ing in mind the aforemen-tioned criteria it makessense to choose the loadrange between the hot andthe cold state as close aspossible to the nominalload.

Example

Requirement:

Variable spring hanger withdouble lug (standard)Operating load: FW = 90 kNRequired travel, down-wards: sS = 25 mmPreset at cold load FK

Selection:

In the case of downwardrequired travel, the operat-ing load occurs at a higherload; it is kept as close as

possible to the nominalload.

Result:VH size 11Nominal travel sN = 100 mm(from recommended work-ing travel sS = 25 mm)

with cold load: 73.2 kNTravel reserve: 15 mmLoad variation: F = 16.8 kNcorresponding to 19% ofFW (read off from load/travel table or calculatedby means of spring rate:F = R x sS).

Installation dimension Efor preset hanger:preset distance sv =60 mm corresponding to

hanger travel at cold load(from the table below)

Installation dimension:E = E* + sv = 705 + 60E = 765 mm(for E* see tables on pages4047)

Standardproducts

springhangers/springsupports

FHD 11.100.42

Nominal travel sN VH size

in mm

50 100 200 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16

Hanger travel Rec. working travel Required load Fs, depending on travel

mm kN

0 5 0 10 0 20 0.16 0.32 0.66 1.30 2.30 3.90 6.60 10.9 16.5 23.0 33.0 43.6 66.0 92.0 132 165

2.5 5 10 0.18 0.35 0.73 1.44 2.54 4.31 7.27 12.0 18.2 25.4 36.4 48.0 72.7 101 145 182

5.0 7.5 10 15 20 30 0.19 0.39 0.79 1.57 2.77 4.71 7.94 13.1 19.9 27.7 39.7 52.4 7 9.4 111 159 199

7.5 15 30 0.21 0.42 0.86 1.71 3.01 5.12 8.61 14.2 21.5 30.1 43.1 56.9 86.1 120 172 215

10.0 20 40 0.23 0.46 0.93 1.84 3.24 5.52 9.28 15.3 23.2 32.4 46.4 61.3 92.8 130 186 232

12.5 25 50 0.25 0.49 1.00 1.98 3.48 5.93 9.95 16.4 24.9 34.8 49.8 65.7 99.5 139 199 249

15.0 10 30 20 60 40 0.26 0.52 1.06 2.11 3.71 6.33 10.6 17.5 26.6 37.1 53.1 70.1 106 148 212 266

17.5 35 70 0.28 0.56 1.13 2.25 3.95 6.74 11.3 18.6 28.2 39.5 56.5 74.5 113 158 226 282

20.0 40 80 0.30 0.59 1.20 2.38 4.18 7.14 12.0 19.7 29.9 41.8 59.8 79.0 120 167 239 299

22.5 45 90 0.31 0.63 1.26 2.52 4.42 7.55 12.6 20.8 31.6 44.2 63.2 83.4 126 177 253 316

25.0 12.5 50 25 100 50 0.33 0.66 1.33 2.65 4.65 7.95 13.3 22.0 33.3 46.5 66.5 87.8 133 186 266 333

27.5 55 110 0.35 0.69 1.40 2.79 4.89 8.36 14.0 23.1 34.9 48.9 69.9 92.2 140 195 279 349

30.0 60 120 0.36 0.73 1.46 2.92 5.12 8.76 14.6 24.2 36.6 51.2 73.2 96.6 146 205 293 366

32.5 65 130 0.38 0.76 1.53 3.06 5.36 9.17 15.3 25.3 38.3 53.6 76.6 101 153 214 306 383

35.0 15 70 30 140 60 0.40 0.80 1.60 3.19 5.59 9.57 16.0 26.4 40.0 55.9 79.9 105 160 224 320 400

37.5 75 150 0.42 0.83 1.67 3.33 5.83 9.98 16.7 27.5 41.6 58.3 83.3 110 167 233 333 416

40.0 80 160 0.43 0.86 1.73 3.46 6.06 10.4 17.3 28.6 43.3 60.6 86.6 114 173 242 346 433

42.5 85 170 0.45 0.90 1.80 3.60 6.30 10.8 18.0 29.7 45.0 63.0 90.0 119 180 252 360 450

45.0 90 180 0.47 0.93 1.87 3.73 6.53 11.2 18.7 30.8 46.7 65.3 93.3 123 187 261 373 467

47.5 95 190 0.48 0.97 1.93 3.87 6.77 11.6 19.3 31.9 48.3 67.7 96.7 128 193 271 387 483

50.0 15 100 30 200 60 0.50 1.00 2.00 4.00 7.00 12.0 20.0 33.0 50.0 70.0 100 132 200 280 400 500

Nominal travel sN Nominal load FNin kN

Load group LGV 12 12 12 12 12 16 20 24 30 36 42 48 64 72 80 90

50 6.8 13.6 26.8 54 94 162 268 442 670 940 1340 1768 2680 3760 5360 6700

100 3.4 6.8 13.4 27 47 81 134 221 335 470 670 884 1340 1880 2680 3350

200 1.7 3.4 6.7 13.5 23.5 40.5 67.0 110.5 167.5 235 335 442 670 940 1340 1675

Nominal travel sN

Spring rates R in N/mm


40/110

40

Standardproducts

springhangers

HYDRA variable spring hanger with double lug Series FHD

(standard version)Order example: FHD 11.100.42

* Dimensions refer to non-preset initial position at minimum load; dimensions increase with the preset by an amount equal to the preset travel.

Standard version

Hanger preset, hot-dipgalvanized housing, elec-trogalvanized connectingparts, spring painted withalkyd varnish

Options

Hanger not preset, addi-tional terrosone coatingto spring (see page 26 foroption code)

sN FN FHD... R LGV dim. E* A B* D H a b c d r vmm kN N/mm mm mm mm mm mm mm mm mm mm mm mm kg

050 01.050.12 6.8 220 185 155 301 100 0.5 01.100.12 3.4 12 300 265 85 110 235 12 5 12 M12 12 4

200 01.200.12 1.7 470 435 405 6050 02.050.12 13.6 220 185 155 3

02 100 1 02.100.12 6.8 12 300 265 85 110 235 12 5 12 M12 12 4200 02.200.12 3.4 470 435 405 7

050 03.050.12 26.8 230 195 165 403 100 2 03.100.12 13.4 12 305 270 85 120 240 12 5 12 M12 12 5

200 03.200.12 6.7 480 445 415 8

050 04.050.12 54.0 230 195 165 404 100 4 04.100.12 27.0 12 305 270 85 120 240 12 5 12 M12 12 6

200 04.200.12 13.5 480 445 415 9

050 05.050.12 94.0 285 250 210 905 100 7 05.100.12 47.0 12 380 345 85 150 305 16 6 12 M12 20 11

200 05.200.12 23.5 605 570 530 16

050 06.050.16 162.0 300 250 210 1006 100 12 06.100.16 81.0 16 395 345 110 150 305 16 6 16 M16 20 13

200 06.200.16 40.5 620 570 530 19050 07.050.20 268.0 350 290 245 18

07 100 20 07.100.20 134.0 20 450 390 130 180 345 20 8 20 M20 25 23200 07.200.20 67.0 695 635 590 34

050 08.050.24 442.0 410 335 280 3408 100 33 08.100.24 221.0 24 520 445 165 230 390 24 10 24 M24 30 43

200 08.200.24 110.5 795 720 665 63

050 09.050.30 670.0 510 435 350 6009 100 50 09.100.30 335.0 30 640 565 175 255 480 36 15 33 M30 55 73

200 09.200.30 167.5 985 910 825 108

050 10.050.36 940 510 435 350 6510 100 70 10.100.36 470 36 640 565 180 255 480 36 15 40 M36 55 82

200 10.200.36 235 985 910 825 123

050 11.050.42 1340 565 485 405 10311 100 100 11.100.42 670 42 710 630 205 285 550 36 15 45 M42 60 127

200 11.200.42 335 1100 1020 940 188050 12.050.48 1768 490 420 300 213

12 100 132 12.100.48 884 48 600 530 200 490 410 50 20 50 M48 90 33 248200 12.200.48 442 880 810 690 330

050 13.050.64 2680 615 500 370 36513 100 200 13.100.64 1340 64 750 635 270 560 505 50 20 70 M64 100 38 412

200 13.200.64 670 1095 980 850 549

050 14.050.72 3760 645 540 390 51314 100 280 14.100.72 1880 72 780 675 265 620 525 50 25 80 M72 120 43 587

200 14.200.72 940 1125 1020 870 765

050 15.050.80 5360 720 615 445 76015 100 400 15.100.80 2680 80 865 760 270 720 590 60 25 90 M80 135 48 869

200 15.200.80 1340 1255 1150 980 1133

050 16.050.90 6700 970 615 445 82916 100 500 16.100.90 3350 90 1115 760 535 720 590 60 25 100 M90 150 48 957

200 16.200.90 1675 1505 1150 980 1268

VHsize

nom.travel

nom.load

type springrate

loadgroup

instal-lation

main dimensions connecting dimensions approx.weight


41/110


42/110


43/110


44/110

44

Standardproducts

springsupport

HYDRA sway support Series FSGVariable spring support with spherical sway headInstallation dimension E can be subsequently adjusted to suit actual installation conditions.

Standard version

Support preset, hot-dipgalvanized housing, elec-trogalvanized connectingparts, spring painted withalkyd varnish

Options

Support not preset, addi-tional terrosone coatingto spring (see page 26 foroption code)

(standard version)Order example: FSG 06.100.1000.46

*Dimension does not depend on preset position; it changes upon loading by an amount equal to the corresponding spring travel.

Adjustment: +30 mm max. spring travel: -45 mm; this increases when the adjustment is used.

Use HYDRA bracket MBS for on-site connections and for connecting to clamp.

VH nom. nom. type spr ing nom. installat ion dim. main dimensions connecting dimensions approx.size travel load rate length E* weight at

sN FN FSG ... R ENom min max A B* D G M b f d ENom- mm kN - N/mm mm mm mm mm mm mm mm mm mm mm mm kg

01 1 00 0,5 01.100.0800.008 3,4 800 400 1250 228 98 102 34 130 10 12 12 802 100 1 02.100.0800.008 6,8 8

03 100 2 03.100.0800.008 13,4 800 410 1250 235 98 114 34 150 10 12 12 1004 100 4 04.100.0800.008 27 11

05 100 7 05.100.1000.046 47 1000 490 1550 305 101 140 51 190 16 20 17 2306 100 12 06.100.1000.046 81 24

07 100 20 07.100.1000.046 134 1000 525 1550 340 101 168 51 220 16 20 17 34

08 100 33 08.100.1200.046 221 1200 595 1750 390 105 219 76 270 16 20 22 66

09 100 50 09.100.1400.100 335 1400 720 1950 480 126 245 89 300 22 30 27 10110 100 70 10.100.1400.100 470 108

11 100 100 11.100.1400.100 670 1400 795 1950 555 126 273 89 340 22 30 27 157


45/110


46/110

46

Standardproducts

doublehanger

HYDRA double hanger with trapeze

Selection

The table below shows thepossible loads for the 11 VHsizes available as doublehangers, depending on thehanger travel and on thenominal travel sN of 50, 100or 200 mm.

The maximum load equalsthe nominal load FN of thedouble hanger and willtherefore amount to twicethe load of single hangers.

For calculating the required

load Fs, the loads resultingfrom weight of pipe shoe(FA) and trapeze (FT), andfrom the active weight of thehangers (FH) (1 kg = approx.0.01 kN) must be added tothe load of the pipe.

The other selection criteriacorrespond to those forsingle hangers type FHG(see page 41).

Example

Requirement:

Double hanger with trapeze,hot-dip galvanizedMetric connecting threadSpan: L = 800 mmPipe shoe: LUR 350.170(see page 48)

Hot load: Fw = 30 kNRequired travel, upwards:ss = 25 mmPreset at cold load Fk

Required hot load athanger:Fs = Fw + FA+ FT + FHFs = 30 + 0.2 + 0.2 + 0.2*)

Fs = 30.6 kNPreset load: 37.3 kNTravel reserve: sR = 10 mmLastnderung:F = 25 x 268 = 6.7 kNcorresponding to 22%of Fw

Cold load at pipe:Fk = 37.3 0.9 = 36.4 kN

*) Active loads taken from tables(pages 47-48).

Selection:

In the case of upwardrequired travel where thehot load occurs at a lowerload, a hanger size shouldbe selected which has acold load as close as pos-sible to the nominal load.

Result:VH size: 07Nominal travel: sN = 100 mm(from recommended work-ing travel Ss = 25 mm).

FDT 07.100.0800.20

Spring rates R in N/mm

50 13.6 27.2 53.6 108 188 324 536 884 1340 1880 2680

Nominal travel sN 100 6.8 13.6 26.8 54 94 162 268 442 670 940 1340

200 3.4 6.8 13.4 27 47 81 134 221 335 470 670

Nominal travel sN VH sizein mm

50 100 200 01 02 03 04 05 06 07 08 09 10 11

Hanger travel Rec. working travel Required load Fs, depending on travel

mm kN

0 5 0 10 0 20 0.32 0.64 1.32 2.60 4.60 7.80 13.2 21.8 33.0 46.0 66.02.5 5 10 0.35 0.71 1.45 2.87 5.07 8.61 14.5 24.0 36.4 50.7 72.7

5.0 8 10 15 20 30 0.39 0.78 1.59 3.14 5.54 9.42 15.9 26.2 39.7 55.4 79.4

7.5 15 30 0.42 0.84 1.72 3.41 6.01 10.2 17.2 28.4 43.1 60.1 86.1

10.0 20 40 0.46 0.91 1.86 3.68 6.48 11.0 18.6 30.6 46.4 64.8 92.8

12.5 25 50 0.49 0.98 1.99 3.95 6.95 11.9 19.9 32.9 49.8 69.5 99.5

15.0 10 30 20 60 40 0.52 1.05 2.12 4.22 7.42 12.7 21.2 35.1 53.1 74.2 106

17.5 35 70 0.56 1.12 2.26 4.49 7.89 13.5 22.6 37.3 56.5 78.9 113

20.0 40 80 0.59 1.18 2.39 4.76 8.36 14.3 23.9 39.5 59.8 83.6 120

22.5 45 90 0.63 1.25 2.53 5.03 8.83 15.1 25.3 41.7 63.2 88.3 126

25.0 13 50 25 100 50 0.66 1.32 2.66 5.30 9.30 15.9 26.6 43.9 66.5 93.0 133

27.5 55 110 0.69 1.39 2.79 5.57 9.77 16.7 27.9 46.1 69.9 97.7 140

30.0 60 120 0.73 1.46 2.93 5.84 10.2 17.5 29.3 48.3 73.2 102 146

32.5 65 130 0.76 1.52 3.06 6.11 10.7 18.3 30.6 50.5 76.6 107 153

35.0 15 70 30 140 60 0.80 1.59 3.20 6.38 11.2 19.1 32.0 52.7 79.9 112 160

37.5 75 150 0.83 1.66 3.33 6.65 11.7 20.0 33.3 55.0 83.3 117 167

40.0 80 160 0.86 1.73 3.46 6.92 12.1 20.8 34.6 57.2 86.6 121 173

42.5 85 170 0.90 1.80 3.60 7.19 12.6 21.6 36.0 59.4 90.0 126 180

45.0 90 180 0.93 1.86 3.73 7.46 13.1 22.4 37.3 61.6 93.3 131 187

47.5 95 190 0.97 1.93 3.87 7.73 13.5 23.2 38.7 63.8 96.7 135 193

50.0 15 100 30 200 60 1.00 2.00 4.00 8.00 14.0 24.0 40.0 66.0 100 140 200

Nominal travel sN Nominal load FNin kN

Load group LGV 12 12 12 12 12 16 20 24 30 36 42


47/110


48/110

DN D H FN LUR... J E A B L- mm mm kN mm mm mm mm mm kg

102 22 0080.102.200 92 146 - 480 88.9 162 22 0080.162.200 152 206 80 - 200 5

212 22 0080.212.200 192 256 - 7

108 27 0100.108.200 98 165 - 6100 114.3 168 27 0100.168.200 158 225 80 - 200 8

218 27 0100.218.200 198 275 - 9

110 27 0125.110.200 100 180 - 7125 139.7 170 27 0125.170.200 160 240 80 - 200 8

220 27 0125.220.200 200 290 - 9

111 27 0150.111.200 101 195 - 7

150 168.3 171 27 0150.171.200 161 255 80 - 200 9221 27 0150.221.200 201 305 - 10

165 33 0200.165.250 155 274 - 12200 219.1 225 33 0200.225.250 215 334 120 - 250 14

293 38 0200.293.250 273 403 140 20

168 39 0250.168.250 158 304 - 15250 273 228 39 0250.228.250 218 364 120 - 250 17

296 45 0250.296.250 276 432 140 23

169 39 0300.169.250 159 331 - 16300 323.9 229 39 0300.229.250 219 391 120 - 250 18

297 45 0300.297.250 277 459 140 24

170 39 0350.170.250 160 348 - 17350 355.6 230 39 0350.230.250 220 408 120 - 250 19

298 45 0350.298.250 278 476 140 25

189 61 0400.189.330 179 392 - 32

400 406.4 249 61 0400.249.330 239 452 200 - 330 36319 66 0400.319.330 299 522 220 47

192 61 0450.192.330 182 420 - 34450 457 252 61 0450.252.330 242 480 200 - 330 37

322 66 0450.322.330 302 550 220 49

193 61 0500.193.330 183 447 - 36500 508 253 61 0500.253.330 243 507 200 - 330 39

323 66 0500.323.330 303 577 220 51

196 79 0600.196.330 186 501 - 45600 610 256 79 0600.256.330 246 561 200 - 330 48

326 85 0600.326.330 306 631 220 60

48

HYDRA pipe shoes Series LUR

Pipe shoes are designed foruse on trapezes free to move inall directions, not on trapezeswith guides. If in individual cases

the pipe shoes indicated are

not suitable, sliding supportsdescribed in our publicationSupports can be used.

The loads for intermediate tem-peratures can be calculated bylinear interpolation for eachspecific type of material.

Loads for temperatures lower

than those given can be calcu-lated depending on the materialfrom the nominal load FN byusing the temperature factors

on page 74.

Standardproducts

pipeshoes

Standard version

Materials:S 235 JRG 2, 16Mo3,13CrMo4-5,Surface protection:blank

(S 235 JRG 2, primed)Order example: LUR 0350.170.250-37.3

Options

Surface protection:primedSurface protection:hot-dip galvanized(only with S 235 JRG 2)(see page 26 foroption code)

Nominal sizes, dimensions, weights

nom. dim. outer pipe

diameter

nom.

height

nom. load type max.

insulationthickness

installation

dim.

dimensions approx.

weight


49/110

DN D H FN LUS... J E A L- mm mm kN mm mm mm mm kg

150 168.3 211 77 0150.211.250 181 295 140 250 13261 77 0150.261.250 231 345 15

200 219.1 223 102 0200.223.250 193 333 140 250 17273 102 0200.273.250 243 383 19

250 273.0 228 132 0250.228.250 198 365 200 250 23278 132 0250.278.250 248 415 25

300 323.9 233 132 0300.233.250 203 395 200 250 24283 132 0300.283.250 253 445 27

350 355.6 248 132 0350.248.250 218 426 200 250 26298 132 0350.298.250 268 476 28

400 406.4 255 206 0400.255.330 225 458 300 330 48305 214 0400.305.330 275 508 52

450 457.0 260 208 0450.260.330 230 489 300 330 50310 214 0450.310.330 280 539 54

500 508.0 265 209 0500.265.330 235 519 300 330 51315 214 0500.315.330 285 569 56

550 559.0 270 249 0550.270.330 240 550 350 330 63320 264 0550.320.330 290 600 67

600 610.0 290 255 0600.290.330 260 595 350 330 66330 267 0600.330.330 300 635 69

700 711.0 300 258 0700.300.330 270 656 350 330 71340 267 0700.340.330 310 696 75

800 813 310 279 0800.310.330 280 717 400 330 106350 292 0800.350.330 320 757 109

850 864 310 279 0850.310.330 280 742 400 330 110350 292 0850.350.330 320 782 113

900 914 325 339 0900.325.330 295 782 400 330 134365 354 0900.365.330 335 822 139

1000 1016 335 343 1000.335.330 305 843 500 330 156

385 362 1000.385.330 355 893 163

1100 1120 335 343 1100.335.330 305 895 500 330 163385 362 1100.385.330 355 945 171

1200 1220 335 343 1200.335.330 305 945 500 330 171385 362 1200.385.330 355 995 178

49

Standardproducts

pipeshoes

HYDRA pipe shoes Series LUS

Order example: LUS 0300.233.250-10.0

Standard version

Materials:16Mo3,13CrMo4-5,10CrMo9-10,Surface protection:blank

Options

Surface protection:primed(see page 26 foroption code)

DN 150700 DN 8001200

nom. dia. outer pipediameter

nom.height

nom.load

type max.insulationthickness

installationdim.

dimensions approx.weight

Pipe shoes are designed for useon trapezes free to move in alldirections, not on trapezes withguides. If in individual cases thepipe shoes indicated are not suit-

able, sliding supports describedin our publication Supportscan be used.

The loads for intermediate tem-peratures can be calculated bylinear interpolation for eachspecific type of material. Loadsfor temperatures lower than those

given can be calculated depend-ing on the material from the nomi-nal load FN by using the tempera-ture factors on page 74.


50/110

50

HYDRA pipe shoes Series LTD

Standardproducts

pipeshoes

DN D H FN LTD... J E A L- mm mm kN mm mm mm mm kg

85 0015.084.250 74 95 315 21.3 142 10 0015.141.250 131 152 80 250 3

142 0015.141.250 121 152 4

192 0015.191.250 171 202 485 0020.084.250 74 97 3

20 26.9 142 10 0020.141.250 131 154 80 250 3142 0020.141.250 121 154 4192 0020.191.250 171 204 4

85 0025.085.250 75 102 325 33.7 142 10 0025.142.250 132 159 80 250 4

142 0025.142.250 122 159 4192 0025.192.250 172 209 5

85 0032.085.250 75 106 332 42.4 142 10 0032.142.250 132 163 80 250 4

142 0032.142.250 122 163 4192 0032.192.250 172 213 5

85 0040.085.250 75 109 340 48.3 142 10 0040.142.250 132 166 80 250 4

142 0040.142.250 122 166 4

192 0040.192.250 172 216 5

85 0050.086.250 76 116 450 60.3 142 10 0050.143.250 133 173 80 250 5

142 0050.143.250 123 173 5192 0050.193.250 173 223 5

85 0065.086.250 76 124 465 76.1 142 10 0065.143.250 133 181 80 250 5

142 0065.143.250 123 181 5192 0065.193.250 173 231 5

Order example: LTD 0040.142.250-37.2

Standard version

Materials:S 235 JRG 2, 16Mo3,

13CrMo4-5,Surface protection:blank

Options

Surface protection:primed

(see page 26 for optioncode)

nom. dia. outer pipediameter

nom.height

nom.load

type max.insulationthickness

installationdim.

dimensions approx.weight

Pipe shoes are designed for useon trapezes free to move in alldirections, not on trapezes withguides. If in individual cases thepipe shoes indicated are not

suitable, sliding supportsdescribed in our publicationSupports can be used.

The loads for intermediate tempera-tures can be calculated by linearinterpolation for each specific typeof material. Loads for temperatureslower than those given can be cal-

culated depending on the materialfrom the nominal load FN by usingthe temperature factors on page 74.

H = 85 mm, S 235 JRG 2 H = 142 mm, S 235 JRG 2 H = 142 mm, 192 mm, 16Mo3


51/110

51

Standardproducts

constanthangers/supports

HYDRA constant hangers/constant supports

Main features

Suitable for use in industrial

plants, both indoors andoutdoors, on ships andoffshore platforms (selectappropriate corrosionprotection).

Their suitability for usein power plants hasbeen proven by tests toVGB R 510 L and KTA3205.3 standards.

The allowable ambienttemperature is 80 C.

Minimum adjustability ofload after installation is15% without adverselyaffecting hanger travel.

Maximum deviation fromconstant required load(load deviation) for a straightload application is 5%(friction component < 3%).

Permissible angular devia-tion of tie rods in hangersis 4 in all directions (doesnot apply to constantsupports).

In extreme cases 2.5 timesthe nominal load FN canbe sustained without

permanent deformation.In such cases, a non-preset hanger travelsdownwards to the lowerposition.

0.05

Req uired load FS in kN (load reserve 15%)

0.1 0.2 0.3 0.5 1 2 3 10 20 30 50 100 200 300 50050

100

200

300

400

500

Nominaltravels

N

inmm

5

max. required load FS max

nominal load FN

range of adjustment

02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20

CH size

01

Load/Travel diagram (principle)

Gradation of HYDRA constant hangers/constant supports

Load gradation

The total load range from0.04 to 500 kN is coveredby just 20 CH sizes. Aneconomical and technically

suitable gradation hasbeen achieved.Nominal travels from 50to 500 mm in small, pre-

Wit Zen Mann Kata Log

Documents