Steel expansion joints General description of steel expansion joints Steel expansion joints are used in appliances, machines, apparatus and pipe systems where space is restricted ■ to compensate for movement ■ to compensate for expansion ■ to reduce tension ■ to absorb noise and oscillation transmission ■ to compensate for ground and foundation settlement ■ as adapters to compensate for installation inaccuracies ■ as dismantling pieces for fittings Steel expansion joints are flexible pipe connection elements and are used in a variety of industrial applica- tions: ■ Machine engineering ■ Domestic industry ■ Chemical industry ■ Process plant engineering ■ Gas and water supply ■ Exhaust technology STENFLEX ® steel expansion joints have served with distinction for more than 45 years. They are the preferred flexible pipe connection elements of choice in manufactured appliances, machinery, apparatus and piping en- gineering. Constant further development and in- novations update our product range to meet the needs of current and changing markets, and fulfil the re- quirements of industry in regard to: ■ Operating safety ■ Reliability ■ Pressure and temperature resistance ■ Vacuum stability ■ Flexibility ■ Impermeability ■ Corrosion resistance ■ No maintenance ■ Long service life The large-scale industrial manufac- ture of steel bellows, constant control of compliance with all manufacturing, business and quality processes in line with EN ISO 9001:2008 and decades of experience in the development and manufacture of steel expansion joints: all this guarantees a uniform product of the highest standard. It underlines the STENFLEX ® Quality Claim. Our expertise in expansion joint engi- neering is reflected in the long service life and consequently in the high op- erational reliability of our steel expan- sion joints, thanks to the excellent production functionality and quality. Purpose For decades our steel expansion joints have been used in a wide variety of applications, and guarantee trou- ble-free operation on-site. STENFLEX ® has been assessed and approved as manufacturer of steel ex- pansion joints, on the basis of AD norms of the Pressure Equipment Di- rective and international standards. Calculations are based among other factors, on AD 2000-B12, DIN EN 14917 and EJMA. STENFLEX ® steel expansion joints have been certified by numerous classification, and ac- ceptance societies, and bear the CE mark. Our engineers together with our R&D department are always available for technical consultation, and ready to help in solving specific application problems at any time. 6 1
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Steel expansion jointsGeneral description of steel expansion joints
Steel expansion joints are used in appliances, machines, apparatus and pipe systems where space is restricted
■ to compensate for movement■ to compensate for expansion■ to reduce tension■ to absorb noise and oscillation
transmission■ to compensate for ground and
foundation settlement■ as adapters to compensate for
installation inaccuracies■ as dismantling pieces for fittings
Steel expansion joints are flexiblepipe connection elements and areused in a variety of industrial applica-tions:
■ Machine engineering■ Domestic industry■ Chemical industry■ Process plant engineering■ Gas and water supply■ Exhaust technology
STENFLEX® steel expansion jointshave served with distinction for morethan 45 years. They are the preferredflexible pipe connection elements ofchoice in manufactured appliances,machinery, apparatus and piping en-gineering.Constant further development and in-novations update our product rangeto meet the needs of current andchanging markets, and fulfil the re-quirements of industry in regard to:■ Operating safety■ Reliability■ Pressure and temperature
resistance■ Vacuum stability■ Flexibility■ Impermeability■ Corrosion resistance■ No maintenance■ Long service life
The large-scale industrial manufac-ture of steel bellows, constant controlof compliance with all manufacturing,business and quality processes in linewith EN ISO 9001:2008 and decadesof experience in the development andmanufacture of steel expansion joints:all this guarantees a uniform productof the highest standard. It underlinesthe STENFLEX® Quality Claim.
Our expertise in expansion joint engi-neering is reflected in the long servicelife and consequently in the high op-erational reliability of our steel expan-sion joints, thanks to the excellentproduction functionality and quality.
Purpose
For decades our steel expansionjoints have been used in a wide varietyof applications, and guarantee trou-ble-free operation on-site.
STENFLEX® has been assessed andapproved as manufacturer of steel ex-pansion joints, on the basis of ADnorms of the Pressure Equipment Di-rective and international standards.Calculations are based among otherfactors, on AD 2000-B12, DIN EN14917 and EJMA. STENFLEX® steelexpansion joints have been certifiedby numerous classification, and ac-ceptance societies, and bear the CEmark.
Our engineers together with our R&Ddepartment are always available fortechnical consultation, and ready tohelp in solving specific applicationproblems at any time.
61
STENFLEX® steel expansion jointsvary according to the following crite-ria:■ type (universal/lateral/angular ex-
pansion joints)■ pipe connection type (flange, weld-
ing end or threaded connection)■ material quality of the bellows (rat-
ed to the media transported in thepipes)
■ bellows structure (rated to themovement, pressure and tempera-ture load)
Our expansion joints are deliveredready for installation. STENFLEX®manufactures expansion joints innominal widths DN 15 – DN 2800 andfor nominal pressure rates PN 1 - PN25. A wide range of materials is used,with temperature resistance from–196 °C to +900 °C.
Lateral expansion jointsStructure:Steel bellows with laterally movable restraints and flanges or welding ends. Movement absorption:Lateral shift of the expansion joint is possible. The restraint absorbs axial reac-tion force and relieves the pressure on the pipe's fixed points. Lateral expansionjoints, with two bellows and a connecting pipe are used to absorb large move-ment.Fixed points:Only light fixed points are required to absorb lateral movement and frictionforce.
Axial expansion jointsStructure:Steel bellows with connection parts (flange, welding end or threaded connec-tion). Movement absorption:Axial shift, and slight all-round movement of the expansion joint is possible. Ax-ial expansion joints with two bellows are used to absorb larger movement.Fixed points:Robust pipe fixed points and correct pipe routing are necessary to absorb theaxial forces.
Angular expansion jointsStructure:Steel bellows with hinge restraint and flanges or welding ends. The rotating axis ofthe hinge restraint is in the middle of the bellows. Movement absorption:Angular movement of the expansion joint is possible. The angular joints regu-late a defined angular movement, absorb axial reaction force and relieve thepressure on the pipe's fixed points. We differentiate between angular expansion joints with a hinge (bellows angularmovement guided on one plane) and angular expansion joints with a cardanhinge restraint (bellows movement guided on two planes).Fixed points: Only light fixed points are required to absorb angular movementforce and friction force.
Together with the standard and basicversions featured in the catalogue,special versions can also be devel-oped and produced on request, forspecial operating conditions or spe-cial structures.
Connection parts (that deviate fromDIN) such as EN, ISO, ANSI, VG, SAEstandards etc. are also available.
STENFLEX® steel expansion joints arerated theoretically using state-of-the-art computing techniques (which in-clude the Finite Element Method).They are optimized under experimen-tal conditions. National and interna-tional calculation standards are usedto rate the bellows.Our development engineers use themost up-to-date development toolsthroughout the development stage tovalidate the construction process interms of form, function and installa-
tion. Hence we can offer our cus-tomers the following advantages:
Development/Design
Versions
■ Design and development in linewith the specific requirements, re-sulting in safe and extremelydurable expansion joints
■ Efficient products by incorporatingsuperior functionality
■ Structures that are easy to install■ Reduced lead times for special
designs
62
Bellowsmaterial
Food-product industry, film and photo industry, nitrogen fertilizer industry, silencerand exhaust purification systems, low tem-perature technology
Chemical industry, oil, soap and textile industries, dyeing plant, dairies, breweries,pharmaceutical industry, petrochemical andcoal-tar industry, water supply and watertreatment
Furnace and apparatus construction, airpre-heaters, steel and metallurgical industry
Steel and metallurgical industry
Chemical engineering, plant for air purifica-tion, oil and gas extraction, reprocessingplant, acid production, petrol facilities
Material qualitiesSTENFLEX® expansion joint bellowsare manufactured from top qualitysheet metal. Different material quali-ties are used to cover the many oper-ating conditions in various industrialapplications.
StructureSTENFLEX® steel bellows are avail-able in a variety of structures and ver-sions. The steel bellows is the flexibleelement of every expansion joint. Itmust fulfil the requirement for goodmovability with simultaneous pres-sure resistance.
Variable parameters (wall thickness,number of plies, convolution geome-try, number of convolutions) deter-mine the pressure resistance, move-ment absorption and spring rate (self-resisting force) of the bellows. One-ply, two-ply and multi-ply bellows aremanufactured from various materialswith different wall thicknesses.
Our calculation methods ascertain thestability limits. The ability to withstandbuckling is the prime criterion forsmaller bellows diameters, whereas inlarger bellows diameters it is convolu-tion stability.
Steel expansion jointsGeneral description of steel expansion joints
Steel bellows
one-ply two-ply multi-ply
Buckling instability of a steel expansion joint
Convolution instability of a steel expansion joint
Properties Applications
Stainlesssteel
For aggressive media, good endurance at low temperatures
The Mo component results ingreater resistance to pitting corro-sion from media containing chlo-ride, suitable for drinking waterand food products
Heat resistant
Heat resistant
Highly resistant to oxidizing andnon-oxidizing hot acids (sulphuricand phosphoric acid)
Material No.as per DIN EN
1.4541
1.44041.4571
1.4828
1.4878
2.4858(Incoloy 825)
X6CrNiTi18-10
X2CrNiMo17-12-2X6CrNiMoTi17-12-2
X15CrNiSi20-12
X12CrNiTi18-9
NiCr21Mo
Designation asper DIN EN (DIN)
Heatresistantsteel
Nickel-based alloy
The outstanding characteristic of thesteels and alloys is their particular re-sistance to chemically aggressive liq-uid media. Please ask our TechnicalConsulting Service for detailed infor-
Multi-ply bellows are to be used for vibration load
mation about the media resistance ofindividual materials.
63
Rating, service life
Steel bellows, as a rule, are rated for atemperature of +20 °C, the nominalpressure and a load of 1000 load cy-cles.
One load cycle refers to the proce-dure beginning at zero position, fromwhere the expansion joint moves tothe maximum elongation (positive)position, back through the zero posi-tion to the maximum compression(negative) position, and back to thezero position.
Together with the tolerable operatingconditions
■ pressure■ temperature■ movement■ number of load cycles
the following parameters can also in-fluence the service life of expansionjoints:
Corrosion can be caused by incorrectselection or combination of materials,conveyance of aggressive media andinappropriate cleaning with chemicalagents.
High-frequency oscillations and sym-pathetic vibration must be avoided byall means, because this will result infatigue failure/fracture.
Pressure and temperature shocksmust be avoided. It is important not toexceed the permitted maximum val-ues.
Incorrect installation can be prevent-ed by compliance with our installationand assembly instructions.
In the case of unrestrained expansionjoints, the absence of fixed points cancause the pipeline to shift. This usual-ly destroys the expansion joint.
Steel expansion joint with rotatingflange with flared bellows
Steel expansion joint with fixed flange
tanks etc. by flanges, welding ends orthreaded connections. The connec-tions are standardized to fit commer-
Flanges
STENFLEX® steel expansion joints,series SF, are supplied with rotatingflanges or fixed flanges.
Standard flanges are drilled in accor-dance to EN 1092. Standard screwscan be used because the flanges aredrilled for through bolts. Other flangeconnections are possible, e.g. toDIN EN, ANSI, BS, VG, SAE, for ex-haust pipes and ventilation systems.
Flanges for lateral expansion jointsare equipped with ears for tie rod re-straints. The design differs betweenflanges with molded ears and ovalflanges, depending on expansion jointtype and size.
Connection parts
Angular expansion joints areequipped with oval flanges and weld-ed hinge restraints.
Flanges of unalloyed steel are electro-galvanized or given an anti-corrosionprime coating. Stainless steel is usedto meet tougher corrosion protectionrequirements. Other materials andforms of corrosion protection (hot-dipgalvanizing, special varnish, specialcoating etc.), can be supplied on re-quest.
STENFLEX® steel expansion joints aresupplied ready for installation. They areconnected to pipes, fittings, pumps,
cially available flanges, threads andpipes.
Flange material Material No. as per DIN EN Designation as per DIN EN (DIN)
Steel expansion jointsGeneral description of steel expansion joints
Welding end material Material No. as per DIN EN Designation as per DIN EN (DIN)
Threaded connectionsSTENFLEX® steel expansion jointswith threaded connections series SG,are primarily used in the domestic in-dustry for smaller dimensions up toDN 50. They are equipped with femaleor male thread, in accordance withISO 7-1 (DIN 2999).Threaded connections of high-tem-perature steel are given an anti-corro-sion prime coating. Malleable cast-
Welding endsSteel expansion joints, series SA, areequipped with welding ends. The di-mensions of the welding ends are rat-ed in accordance with the ISO pipestandards, or to customer specifica-tions. Welding ends of unalloyed steel aregiven an anti-corrosion prime coating.Stainless steel is used to meettougher corrosion protection require-
Type SG-10 with male thread
Steel expansion joint with welding ends– bellows welded to reinforcing ring
Steel expansion joint with welding ends– bellows welded with flared seam
Type SG-11 with female thread
ments. Other materials, and forms ofcorrosion protection (special varnish,
ings are electrogalvanized. Stainlesssteel is used to meet tougher corro-sion protection requirements. It is alsosuitable for copper and plastic pipes.
Threaded part material Material No. as per DIN EN Designation as per DIN EN (DIN)
Outer restraint with spherical washersand conical seats (lateral expansion joints)
details and operating parameters ofthe corresponding machinery orequipment must be known to correct-ly calculate the degree of restraintneeded. Standard restraints are avail-able for the lateral and angular expan-sion joint program. They are calculat-
Restraints are used for lateral and an-gular expansion joints. The restraintsabsorb axial reaction force producedby inner pressure. Even so, the con-nected pipe must be equipped withlight fixed points to absorb movingforce and moments. Precise rating
ed on the basis of the materialstrength values at +20 °C. Reducedstrength values at higher tempera-tures are taken into account.
Tie rod restraintsLateral expansion joints are equippedwith adapters for tie rod restraints.The design differs between flangeswith welded ears or oval flanges de-pending on the expansion joint typeand size. Tie rod restraints run flexiblyon sperical washers and conicalseats.
The tie rods, spherical washers, coni-cal seats, and nuts are electrogalva-nized. Ears of unalloyed steel are given an anti-corrosion prime coating.Stainless steel is used to meettougher corrosion protection require-ments. Other materials, and forms of
corrosion protection (special varnish,special coating, etc.), can be suppliedon request.
66
Steel expansion jointsGeneral description of steel expansion joints
STENFLEX® steel expansion jointscan be provided with the followingaccessories:■ Internal guide sleeve■ Guide sleeve■ Protective cover
Internal guide sleeves
Internal guide sleeves can be insertedor welded into the expansion joint. Asa rule they are made of stainless steel.Internal guide sleeves are required tohandle higher flow speeds (see dia-gram) and the resulting possible reso-nance in the bellows. Also to deal withturbulence as a result of deflection inthe direction of flow (e.g. behindpumps, valves, T-pieces, pipe bends).
Even under these conditions, the in-ternal guide sleeve is intended toguide the medium turbulence freethrough the convoluted bellows.
An internal guide sleeve also providesthe bellows with reliable protectionfrom abrasion by the medium. In thiscase the internal guide sleeve musthave thicker walls.
Internal guide sleeves have proven successful as protection for the bellows at flowrates above the curve. The data are of indicative nature.
Internal guide sleeve with flaredflange
Expansion jointflange
Internal guidesleeve with flared flange
BellowsPipe flange
Flat seal
Direction of flow
Accessories
Hinge restraint with joint bars and bolts(angular expansion joints)
Material hinge restraint Material No. as per DIN EN Designation as per DIN EN (DIN)
Hinge restraintsAngular expansion joints areequipped with oval flanges and hingerestraints that consist of joint bars andbolts.Connection parts of unalloyed steelare given an anti-corrosion primecoating. Stainless steel parts are usedto meet tougher corrosion protectionrequirements. Other materials andforms of corrosion protection (specialvarnish, special coating etc.) can besupplied on request.
Hinge restraint with joint bars and bolts(lateral expansion joints)
Gases
Liquidmedia
Nominal diameteter (DN)
Flow
rat
e (m
/s)
67
Guide sleeves
Guide sleeves stabilize the expansionjoint in its axial movement and pre-vent it from buckling. As a rule, guidesleeves are made of thick-walled,stainless or unalloyed steel.
Axial expansion joints with two bel-lows are provided with guide sleevesin the factory, as a rule with a tele-scopic design.
Expansion joint guide sleeves do not supersede pipe guide bearings.
Axial expansion joint with telescopic guide sleeve
Protective covers
Protective covers are used to protectthe bellows from damage during in-stallation and operation. The pipes,fitted to the outside, protect the bel-lows reliably from splashes of weldingmaterials or other mechanical influ-ence. As a rule protective covers aremade of stainless or unalloyed steeland can be fitted on the outside bothover the flanges and between theflanges.
Expansion joint with removable protective cover on the outside overthe flanges
Expansion joint with telescopic pro-tective cover between the flanges
Direction of flow
Axial expansion joint with cylindrical internal guide sleeve
Axial expansion joint with telescopic internal guide sleeve
Axial expansion joints are equippedwith cylindrical internal guide sleevesand lateral expansion joints with coni-cal internal guide sleeves. Axial ex-pansion joints with internal guidesleeve and flared flange require an ad-ditional seal between the bellows flare
Lateral expansion joint with conical internal guide sleeve
and the flared flange. In conical inter-nal guide sleeves the tapered cross-section must be taken into account(pressure loss and flow rates). Tele-scopic internal guide sleeves with anarrow gap are used where the medi-um is able to flow through the expan-
sion joint in both directions. Attentionmust be paid to the direction of flowto ensure that expansion joints withinternal guide sleeve function proper-ly. The direction of flow is indicated bythe arrow marked on the expansionjoint.
68
Steel expansion jointsCompensation systems
With more than 45 years of experi-ence in expansion joint engineering,STENFLEX® is the competent partnerfor application-oriented solutions.STENFLEX® compensation pipepieces can be supplied on request ascomplete system solution with readymounted expansion joints. As a rule,these are angular and lateral expan-sion joints, designed according tocustomer requirements.
Pipe sections, bends, T-pieces andexpansion joints are put together withthe necessary restraints, hinges, andaccessories, to form a unit.
Our experts assist in the selection andoptimum arrangement of the systemcomponents to produce a compensa-tion system ready to be installed.
Compensation systems with lateral and angular expansion joints
L-shaped triple joint1 angular and 1 lateral expansionjoint with hinge restraints
3D triple joint 1 angular and 1 lateral expansionjoint with tie rod restraints
U-shaped triple joint3 angular expansion joints with hingerestraints
3D triple joint2 angular expansion joints with car-dan hinge restraint and 1 angular ex-pansion joint with hinge restraint
Restrained STENFLEX® stainless steel expansion joints type SF-25 to absorb
thermal expansion in a transformer plant
69
900°
Minimum/maximum temperature
Symbols for a quick product selection
ISO
Expansion joint to absorb axial movement
Threaded connection to ISO
Resistant to hot water (combined with temperature symbol)
Suitable for drinking waterand food products
Suitable for acids and lyes
Suitable for oils or fatty media
Suitable for gaseous media
DINEN ANSI
Expansion joint to absorb lateral movement
Expansion joint to absorb angular movement
Maximum product pressure rate
Flange connections
The easy-to-find list: symbols and their meaning. The colour bar of the following data sheets indicates small symbols thatillustrate the special features of the corresponding types, for easy pre-selection.
Others: DIN EN, ANSI, BS etc.Connection dimensions see technicalannex
Accessories■■ Internal guide sleeve■■ Protective tube■■ Gas sealings for DVGW-application
NotePlease comply with the general tech-nical instructions regarding reactionforce, moving force, fixed point load,installation instructions, etc.
Certificates■■ CE (DGR 97/23/EG)■■ American Bureau of Shipping■■ Bureau Veritas■■ DVGW (DN 32 - DN 200)■■ Germanischer Lloyd■■ Lloyd´s Register of Shipping■■ RINA■■ RMRS
* Check or inquire about the resistance of material grades to temperature and medium.** Check or inquire about reduction in pressure by temperature.
DN 600 - DN 2800
Subject to technical alterations anddeviations resulting from the manu-facturing process.
Type SF-10
615
SF-10/2-C12
Table values refer to +20 °C, bellows material 1.4541, 1000 cycles. Please inquire for deviating values.For pure axial movement: inner diameter of internal guide sleeve mentioned in tables PN 6, PN 10, PN 16.If Δ ax and Δ lat occur simultaneously, the table values must be reduced accordingly. The sum of all shares must not exceed 100 %.*Effective bellows cross sectional area is a theoretical value.
Steel expansion joint ■ Type SF-10Axial expansion joint
DN BL
mm
Δ axtotAxial
springratemm
CaxAxial
move-mentN/mm
A*Effective
bellows crosssectional area
cm2
ø d4Flaredend ø
mm
ø DaBellows
outer ø
mm
Weight
approx.kg
bFlange
thickness
mm
ø DFlangeouter
ømm
ø diInternalguide
sleeve ø mm
PNFlange
connec-tion
EN 1092
Pressure rate standard programPN 6
SF-10/3-C12
900°° -196min
°DINEN
Table values refer to +20 °C, bellows material 1.4541, 1000 cycles. Please inquire for deviating values.*Effective bellows cross sectional area is a theoretical value.
Table values refer to +20 °C, bellows material 1.4541, 1000 cycles. Max. allowable pressure pulsation of 1.0 bar (brief periods). Please inquire for deviatingvalues. *Effective bellows cross sectional area is a theoretical value.
NotePlease comply with the general tech-nical instructions regarding reactionforce, moving force, fixed point load,installation instructions, etc.
Subject to technical alterations anddeviations resulting from the manu-facturing process.
Special designs
Other sizes (DN), lengths or pressureratings on request.
Accessories■■ Internal guide sleeve■■ Protective tube■■ Gas sealings for DVGW-application
Certificates■■ CE (DGR 97/23/EG)■■ American Bureau of Shipping■■ Bureau Veritas■■ DVGW (DN 32 - DN 200)■■ Germanischer Lloyd■■ Lloyd´s Register of Shipping■■ RMRS
619
Versions
Type SF-11
-196min
°°550°°
DINEN
SF-11/2-C12
For larger sizes (DN) please see type SF-16. Also available with PN 10 flange connection.Table values refer to +20 °C, bellows material 1.4541, 1000 cycles. Max. allowable pressure pulsation of 1.6 bar (brief periods). Please inquire for deviatingvalues. *Effective bellows cross sectional area is a theoretical value.
NotePlease comply with the general tech-nical instructions regarding reactionforce, moving force, fixed point load,installation instructions, etc.
Subject to technical alterations anddeviations resulting from the manu-facturing process.
Guide SleeveStandard: 1.4541
621
DN 15 - DN 100
DN 125 - DN 250
Type SF-13
SF-13/2-C12
550°° -196min
°°DINEN
Table values refer to +20 °C, bellows material 1.4541, 1000 cycles. Max. allowable pressure pulsation of 1.0 bar (brief periods). Please inquire for deviatingvalues. *Effective bellows cross sectional area is a theoretical value.
■ for reducing tension, dampingnoise and oscillation in pipesand their system components,e.g. ■ compressors■ motors■ turbines■ machines■ process plants
■ for installation in■ industrial applications■ exhaust systems■ heating installations■ gas supply lines
Applications
SA-10/1-C12
-196min
°
DN 125 - DN 2800
DN 15 - DN 100
Structure type SA-10■■ Vacuum-proof axial expansion
joint consisting of a stainless steel bellows and welded pipe ends(welding ends)
Welding endsVersion■■ Welded pipe endsDimensionsStandard: see tablesOthers: DIN EN, ANSI, BS etc.
MaterialsStandard: 1.0305 (St 35.8I),
1.0038 (S235JR), 1.4541
Others: stainless steel, etc.Corrosion protectionStandard: anti-corrosion primedOthers: special varnish, etc.
* Check or inquire about the resistance of material grades to temperature and medium.** Check or inquire about reduction in pressure by temperature.
NotePlease comply with the general tech-nical instructions regarding reactionforce, moving force, fixed point load,installation instructions, etc.
Subject to technical alterations anddeviations resulting from the manu-facturing process.
623
DN BL
mm
Δ axtotAxial
movement
mm
CaxAxial
spring rate
N/mm
Δ lattotLateral
movement
mm
ClatLateral
spring rate
N/mm
A*Effective
bellows crosssectional area
cm2
Weight
approx. kg
ø da x sPipe
connection
mm
Pressure rate standard programPN 2.5
Certificates
■■ Bureau Veritas■■ DVGW (DN 32 - DN 200)
SA-10/2-C12
-196min
°
Table values refer to +20 °C, bellows material 1.4541, 1000 cycles. Max. allowable pressure pulsation of 0.25 bar (brief periods). Please inquire for deviatingvalues. For pure axial movement: inner diameter of internal guide sleeve mentioned in tables PN 6, PN 10, PN 16.If Δ ax and Δ lat occur simultaneously, the table values must be reduced accordingly. The sum of all shares must not exceed 100 %.*Effective bellows cross sectional area is a theoretical value.
■■ CE (DGR 97/23/EC)■■ American Bureau of Shipping
ø DaBellows
outerø
mm
900°°
■■ Germanischer Lloyd■■ Lloyd´s Register of Shipping
Steel expansion joint ■ Type SA-10Axial expansion joint
SA-10/3-C12
ø DaBellows
outerø
mm
Table values refer to +20 °C, bellows material 1.4541, 1000 cycles. Max. allowable pressure pulsation of 0.6 bar (brief periods). Please inquire for deviatingvalues.*Effective bellows cross sectional area is a theoretical value.
Table values refer to +20 °C, bellows material 1.4541, 1000 cycles. Max. allowable pressure pulsation of 0.6 bar (brief periods). Please inquire for deviatingvalues. *Effective bellows cross sectional area is a theoretical value.
■ for installation in■ long pipe routings■ industrial applications■ heating installations
■ for gas supply lines
Applications
SA-13/1-C12
-196min
°°550°°
Structure type SA-13
■■ Guide sleeves to stabilize the expansion joint
■■ Guide sleeves do not supersedepipe guide bearings
Welding ends/connecting pipeVersion■■ Welded pipe ends and connecting
pipeDimensionsStandard: see tablesOthers: DIN EN, ANSI, BS etc.
MaterialsStandard: 1.0305 (St 35.8I),
1.0038 (S235JR)Others: stainless steel, etc.corrosion protectionStandard: anti-corrosion primedOthers: special varnish, etc.
Steel bellows PN 10 / PN 16
■■ Multiple convolution bellows in various stainless steel grades■■ One ply or multi-ply structure
■■ Vacuum-proof axial expansionjoint consisting of two stainlesssteel bellows (DN 125 - DN 1200with connecting pipe) and weldedpipe ends (welding ends)
Accessories■■ Protective tube
Certificates■■ CE (DGR 97/23/EG)■■ American Bureau of Shipping■■ Bureau Veritas■■ DVGW (DN 32 - DN 200)■■ Germanischer Lloyd■■ Lloyd´s Register of Shipping
Special designsOther sizes (DN), lengths or pressureratings on request.
Guide sleeveMaterialsStandard: 1.4541
* Check or inquire about the resistance of material grades to temperature and medium.** Check or inquire about reduction in pressure by temperature.
NotePlease comply with the general tech-nical instructions regarding reactionforce, moving force, fixed point load,installation instructions, etc.
Subject to technical alterations anddeviations resulting from the manu-facturing process.
627
DN 125 - DN 250
DN 15 - DN 100
Type SA-13
-196min
°°550°°
SA-13/2-C12
DN BL
mm
DN BL
mm
Δ axtotAxial
movement
mm
CaxAxial
spring rate
N/mm
A*Effective bel-lows cross
sectional areacm2
ø DaBellows
outerø
mm
Weight
approx. kg
ø diGuide sleeve
innerø
mm
ø da x sPipe
connection
mm
Δ axtotAxial
movement
mm
CaxAxial
spring rate
N/mm
A*Effective bel-lows cross
sectional areacm2
ø DaBellows
outerø
mm
Weight
approx. kg
ø diGuide sleeve
innerø
mm
ø da x sPipe
connection
mm
Table values refer to +20 °C, bellows material 1.4541, 1000 cycles. Max. allowable pressure pulsation of 1.0 bar (brief periods). Please inquire for deviatingvalues. *Effective bellows cross sectional area is a theoretical value.
■ for reducing tension, in pipesand their system components,e.g.■ pumps■ compressors■ motors■ turbines■ machines
■ to compensate for installationinaccuracies
■ for installation in■ heating installations■ drinking water systems
■ for pipe systems of stainless orunalloyd steel
■ for copper or plastic pipes■ for pressfitting systems
Applications
SG-10/C12
-196min
°550° ISO
152025324050
125130145185200225
242420202634
494949498787
383854546678
R 1/2”R 3/4”R 1”R 1 1/4”R 1 1/2”R 2”
7.07.0
16.016.025.035.0
0.250.250.520.540.801.20
131517191924
DN BL
mm
Δ axtotAxial
move-mentmm
CaxAxial
springrate
N/mm
A*Effective
bellows crosssectional area
cm2
Weight
approx.kg
LLength of
thread
mm
D1Male
thread ø
inch
Structure type SG-10■■ Vacuum-proof axial expansion
joint consisting of a stainless steel bellows and threaded connectionparts
Table values refer to +20 °C, bellows material 1.4541, 1000 cycles. Max. allowable pressure pulsationof 1.6 bar (brief periods). Please inquire for deviating values.*Effective bellows cross sectional area is a theoretical value.
Pressure rate standard programPN 16
Threaded connection partsVersion■■ Male threadDimensionsStandard: R 1/2“ – R 2“ ISO 7-1
(DIN 2999)
MaterialsStandard: 1.4541Others: stainless steel
Steel bellows PN 16■■ Multiple convolution bellows in various stainless steel grades■■ One ply structure
■■ Connection parts with hexagon insert bit and male thread
Certificates■■ CE (DGR 97/23/EC)
ø DaBellows
outerø
mm
SWWidthacross
mm
Type SG-10
DN 15 - DN 25
DN 32 - DN 50
323246---
* Check or inquire about the resistance of material grades to temperature and medium.** Check or inquire about reduction in pressure by temperature.
■ for reducing tension, in pipesand their system components,e.g. ■ pumps■ compressors■ motors■ turbines■ machines
■ to compensate for installationinaccuracies
■ for installation in■ exhaust systems■ heating installations
■ gas supply lines
Applications
SG-11/C12
350° ISO
152025324050
130135150158154161
185190212224226245
242426303036
283049
111111177
363654666679
Rp 1/2”Rp 3/4”Rp 1”Rp 1 1/4”Rp 1 1/2”Rp 2”
G 1”G 1 1/4”G 1 1/2”G 2”G 2 1/4”G 2 3/4”
57
16252535
253138485366
384753667390
0.50.80.91.31.72.6
DN BL
mm
GL
mm
Δ axtotAxial
movement
mm
CaxAxial
spring rate
N/mm
A*Effective
bellows crosssectional area
cm2
Weight
approx.kg
ø D3Unionnut ø
inch
Width acrossSW 1
mm
SW 2
mm
ø D2Female thread
øinch
Table values refer to +20 °C, bellows material 1.4541, 1000 cycles. Max. allowable pressure pulsation of 1.6 bar (brief periods). Please inquire for deviatingvalues.*Effective bellows cross sectional area is a theoretical value.
Structure type SG-11■■ Bellows with flared ends, connec-
tion parts with union nut and flatpacking
■■ Connection parts with femalethread
Pressure rate standard programPN 16
■■ Vacuum-proof axial expansion jointconsisting of a stainless steel bellows and threaded connectionparts
Threaded connection partsVersion■■ Female thread■■ Union nut with female thread acc.
ISO 228-1DimensionsStandard: Female thread Rp 1/2“
Others: hot-dip galvanized, specialvarnish, special coating,etc.
Steel bellows PN 10 / PN 16■■ Multiple convolution bellows in various stainless steel grades■■ One ply or multi-ply structure
■■ Vacuum-proof, short-length lateralexpansion joint, consisting of astainless steel bellows and rotating flanges
Accessories■■ Internal guide sleeve■■ Protective tube■■ Gas sealings for DVGW-application
Certificates■■ CE (DGR 97/23/EG)■■ American Bureau of Shipping■■ Bureau Veritas■■ DVGW (DN 32 - DN 200)■■ Germanischer Lloyd■■ Lloyd´s Register of Shipping
* Check or inquire about the resistance of material grades to temperature and medium.** Check or inquire about reduction in pressure by temperature.
Special designs
Other sizes (DN), lengths or pressureratings on request.
NotePlease comply with the general tech-nical instructions regarding reactionforce, moving force, fixed point load,installation instructions, etc.
Subject to technical alterations anddeviations resulting from the manu-facturing process.
631
Version
SF-20/2-C12
Table values refer to +20 °C, bellows material 1.4541, 1000 cycles. Max. allowable pressure pulsation of 1.0 bar (brief periods). Please inquire for deviatingvalues.
DN BL
mm
Δ lattotLateral
movement
mm
ClatLateral
spring rate
N/mm
FfricFrictionforce
restraintsN/bar
ø DaBellows
outerø
mm
ø d4Flared end
ø
mm
Weight
approx.kg
bFlange
thickness
mm
PNFlange
connection EN 1092
ø DFlangeouter
ømm
HFlangeheight
mm
Type SF-20Outer restraints, carried on sphericalwashers/conical seats (ball joint)
NotePlease comply with the general tech-nical instructions regarding reactionforce, moving force, fixed point load,installation instructions, etc.
Subject to technical alterations anddeviations resulting from the manu-facturing process.
Accessories■■ Internal guide sleeve■■ Protective tube■■ Gas sealings for DVGW-application
Certificates■■ CE (DGR 97/23/EG)■■ American Bureau of Shipping■■ Bureau Veritas■■ DVGW (DN 32 - DN 200)■■ Germanischer Lloyd■■ Lloyd´s Register of Shipping
Other sizes (DN), lengths or pressureratings on request.
633
Version
-196min
°°550°°
DINEN
SF-21/2-C12
Type SF-21Outer restraints, carried on sphericalwashers/conical seats (ball joint)
DN BL
mm
Δ lattotLateral
movement
mm
ClatLateral
spring rate
N/mm
FfricFrictionforce
restraintsN/bar
ø DaBellows
outerø
mm
PNFlange
connec-tion
EN 1092
Weight
approx. kg
bFlange
thickness
mm
ø DFlangeouter
ømm
HFlangeheight
mm
Pressure rate standard programPN 16
Table values refer to +20 °C, bellows material 1.4541, 1000 cycles. Max. allowable pressure pulsation of 1.6 bar (brief periods). Please inquire for deviatingvalues.
634
3240506580
100125150200250300350400450500
150175205210225235265290310335405415420415420
810141413141414141012111098
28125157237278302156313761
257111451368199527883746
468
111521374693
13088
103130248298
54667996
115137168197253302386420471522572
161616161616161616161616161616
140150165185200220250285340405460520580640715
220230245265280320350385440505534594650763828
181818182020222224262830323436
4.24.56.47.89.4
11.916.521.030.044.566.092.0
113.0149.0188.0
Version
Steel expansion joint ■ Type SF-23Lateral expansion joint
■ for compensating simultaneous axial and lateralmovement
■ for reducing tension, in pipesand their system components,e.g.
■ pumps■ compressors■ motors■ turbines■ machines■ process plants
■ for installation in ■ long pipe routings■ industrial application■ exhaust systems■ heating installations
■ to compensate for installationinaccuracies
Applications
SF-23/C12
-196min
°550°
DINEN
Structure type SF-23■■ Vacuum-proof lateral expansion
joint consisting of two stainlesssteel bellows with connecting pipeand rotating flanges
Type SF-23
■■ Suitable for simultaneous movements
■■ Long connecting pipes allow largelateral movements
FlangesVersion■■ Rotating flanges■■ Flange drilling for through boltsDimensionsStandard: DN 50 - DN 1000 (PN 6)
according to EN 1092Others: DIN EN, ANSI, BS etc. Connection dimensions see technicalannex
Certificates■■ CE (DGR 97/23/EG)■■ American Bureau of Shipping■■ Bureau Veritas■■ DVGW (DN 32 - DN 200)■■ Germanischer Lloyd■■ Lloyd´s Register of Shipping
■ for compensating lateralmovement
■ for reducing tension, in pipesand their system components,e.g. ■ compressors■ motors■ turbines■ machines■ process plants
■ for installation in■ industrial applications■ exhaust systems■ heating installations■ gas supply lines
Applications
* Check or inquire about the resistance of material grades to temperature and medium.** Check or inquire about reduction in pressure by temperature.