Level Control Valves
Float Valvesfor Installation in Tanks
Compact stainless steel valvefeed or drain valvefor use as feed valve only in closed tanksall stainless steel SST 316 constructionPN......p.........Kvs......
160 - 2, 0 - 4, 0 - 8 bar0.3 - 21 m3/h
G......... G 3/8 - 1 1/2AT..........130/300 C
NV 94
NV 98 Universal Valvefeed valve for open or closed tanksavailable with parallel guideall stainless steel SST 316 constructionPN......p..........Kvs......
160 - 2, 0 - 4, 0 - 8 bar0.3 - 82 m3/h
DN...... 40 - 80G.........T..........
3/8 - 1 1/2A130 C
Standard feed valve, cast bodyNV 12P with parallel guidebody grey cast iron, spheroidal cast ironPN.......p..........Kvs......
160 - 2, 0 - 4, 0 - 8 bar2.8 - 195 m3/h
DN.......T..........
20 - 150110 C
NV 66e Large Capacity, stainless steelfeed or drain valveall stainless steel SST 316 constructionPN.......p..........Kvs......
Large Capacity, cast body
16 DN...... 20 - 1500 - 2, 0 - 4, 0 - 84 - 100 m3/h
T.......... 80/130 C
NV 12
NV 16feed or drain valveNV 16 single seat, NV 16e single seat balanced, NV 26 double seatbody grey cast iron, spheroidal cast iron, cast steelPN.......p..........
DN.......
16 - 40NV 16: 0 - 1, 0 - 4 bar NV 16e: 0 - 16 barNV 26: 0 - 1, 0 - 4, 0 - 16 barNV 16: 15 - 100 NV 16e: 15 - 150NV 26: 125 - 400
Kvs...... 2.6 - 1800 m3/h T..........130 C
Mankenberg GmbH Spenglerstrae 99 D-23556 Lbeck Tel. +49-451-8 79 75 0 Fax +49-451-8 79 75 99 [email protected] www.mankenberg.de
WIR REGELN DAS SCHONFIRMLY IN CONTROLWIR REGELN DAS SCHON
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Float Valvesfor Pipelines
16e26
Top Seller
Top Seller
Special versions on request. All the pressure has always been indicated as overpressure. We reserve the right to alter technical specifications without notice.
Float Valvesfor Installation at Tanks
Large Capacity, stainless steelfeed or drain valve, single seat balancedall stainless steel SST 316 constructionPN......p.........Kvs......
160 - 16 bar4 - 100 m3/h
DN......T..........
15 - 100130 C
NV 67e
NV 71 Direct feed or drain valvethe tank is filled or drained via the mounting flange on the tankbody steel, stainless steelPN......p.........Kvs......
Large capacity, cast body
10 DN...... 25 - 1500 - 2, 0 - 4, 0 - 8 bar1.6 - 81 m3/h
T.......... 110 / 300 C
NV 55vertical flow directionNV 55 single seat, NV 55e single seat balancedNV 56 double seatbody grey cast iron, spheroidal cast iron, cast steelPN.......p..........
DN.......
16 - 40NV 55: 0 - 1, 0 - 4 bar NV 55e: 0 - 16 barNV 56: 0 - 1, 0 - 4, 0 - 16 barNV 55: 15 - 100 NV 55e: 15 -150
DN....... 15 - 150
Kvs......
NV 36SF For flammable liquidsNV 36SF body cast steelPN.......p..........Kvs......
NV 56: 125 - 4002.6 - 1800 m3/h T..........130 C
160 - 4, 0 - 16 bar11 - 230 m3/h
DN....... 32 - 200T.......... 80 C
For systems fitted with accumulatorscompressed air shutoff valve for water supply systemsfitted with accumulatorbody steel, stainless steelPN......p.........v..........
10 - 160 - 8 barmax. 1.5 m/sec flow velocity
DN...... 15 - 200T..........80 C
NV 80
Level Control Valves
Mankenberg GmbH Spenglerstrae 99 D-23556 Lbeck Tel. +49-451-8 79 75 0 Fax +49-451-8 79 75 99 [email protected] www.mankenberg.de
WIR REGELN DAS SCHONFIRMLY IN CONTROL
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Overfill Preventer Valvewith PTB approval
Compressed Air Shutoff Valvefor Drinking or Industrial Clean Water supplies
82
55e56
Special versions on request. All the pressure has always been indicated as overpressure. We reserve the right to alter technical specifications without notice.
Know how Float ValvesS
heet
. no.
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/13.
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Level controller or float valveYou should use a level controller with float chamber if the floatcannot be mounted in the vessel. It is mounted in the pipelineand connected to the vessel by means of balancing lines. Float valves have no float chamber. The float is always moun-ted in the vessel.
Feed and drain valves Feed valves (code letter "Z") close as the float rises and pre-vent overflowing. Drain valves (code letter "A") close as thefloat sinks and ensure that the liquid level does not drop belowthe required level.
Mounting of float-controlled valves - Float valves for installations in vessels are mounted
inside the vessel complete with float. - Float valves for installation on vessels are flange-
mounted on the outer skin of the vessel. - Float valves for installation in pipe lines are installed in the
feed/drain pipe. The float lever either projects into the vessel or the float move-mens is transferred by means of a cable.
Flow direction of float valves The flow direction determines the mounting arrangement andtype of float lever used:- horizontal, flow direction towards or away from the vessel
code letter "w"- vertical, flow direction upwards
code letter "o") - vertical, flow direction downwards
(code letter "u")
Selecting valve type and nominal diameter To select the valve type and determine the required nominaldiameter you should calculate first the operating performanceparameter Kv based on the maximum operating values and mi-nimum pressure drop Dp. You should choose a valve having aKvs value which is 30 % greater than the calculated Kv figure.
Selecting the operating pressure range The maximum operating pressure of your system must bewithin the operating pressure range of the valve; if not, thefloat valve will not close or open.
Pressure inside the vessel Check whether the vessel in which the float is to be mounted isnot pressurised. If the vessel is pressurised a pressure-resi-stant ball float has to be fitted. Cylindrical floats may only beused in non-pressurised vessels.
Temperature If the valve is to be used for temperatures above 80 C or a li-quid other than water, the compatibility of the elastomers mustbe checked. For hydrocarbons like gasoline, petrol etc., for ex-ample, the valves are fitted with FPM elastomers, whilst forhigher temperatures they are fitted with EPDM or, if necessary,with a metallic cone seal.
Adapting the float Float valves are normally designed for media with the specificgravity of water. By choosing a different float geometry, by fil-ling the float or by altering the operating pressure range, wecan adapt the floats to other media.
Balance and double seatSingle seat non-balanced float valves are used for low pressu-res. They are relatively insensitive to contamination and dirtdeposits.Single seat balanced valves can be used for larger pressuredrops and feature smaller floats. Double seat valves are specially suitable for large flow rates.
Overflow preventers A special product are the PTB-approved overflow preventersTypes 36S and 36SF. These are mechanical safety devices forflammable liquids.
Seat leakage Level controllers and float valves are control valves which arenot required to provide a leak-proof seal (VDI/VDE Guideline2174). For leakproof shutoff, shut-off valves must be used.Normally our valves leave the factory with perfectly leakproofvalve seats. During operation, however, solid particles (e.g.sand, welding nuggets etc.) often cause damage and seat lea-kage. Any low leakage requirement must be expressly speci-fied when ordering. Valve leakage can be considerably redu-ced by special measures such as lapping the valve seat, usingspecial cone seals and increasing the valve closing force bychanging the lever geometry or increasing the size of the float.
Adjustable filling level In the case of valves fitted with float rod and adjustable float,the level in the vessel can be adjusted by sliding the floatalong the rod.
Float rod guideFor float rods a guide must be provided in the vessel to pre-vent the float oscillating. Float valves with parallel guide orspecial designs featuring a top-mounted float do not require arod guide.
Level controllers and float valves control the liquid level in a vessel
Mankenberg GmbH Spenglerstrae 99 D-23556 Lbeck Tel. +49-451-8 79 75 0 Fax +49-451-8 79 75 99 [email protected] www.mankenberg.de
WIR REGELN DAS SCHONFIRMLY IN CONTROLWIR REGELN DAS SCHON
Know how Float Valves
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Operation Make sure that no pressure surges or water hammer occur inthe system, which could destroy the float. In the case of foa-ming media and the resulting reduction of the specific gravity,a float valve cannot operate reliably. In this case a foam abate-ment circuit should be provided.
Maintenance Float valves and level controllers should be cleaned and servi-ced at regular intervals. This rule applies especially to valveswhich are rarely operated e.g. valves fitted in sprinkler sy-stems. Thorough cleaning is important in the case of liquids containingsubstances which easily form deposits (such as iron, lime, sus-pended solids etc). Sand and abrasive particles carried along in the liquid can cau-se rapid wear. Please ask for specially adapted valves.
Valves free of oil and grease or siliconePlease pay attention to order an fit only spares free of oil andgrease resp. free of silicone.
Please consult our engineer if extreme operating conditi-ons apply or whenever you are in doubt.
Notes on Safety, operarting instruction etc. MUST be fol-lowed
Samples of installation for inflow valvesfor installation in vessels
for installation in pipelines, horizontal installation
for installation in pipelines, vertical installation
for installation at tanks
Overflow preventer for flammable liquids
Pilot operated float valve
Legend
Level controllers and float valves control the liquid level in a vessel
float valve
float valve pilot operated
shut off valve
shut off valve
Mankenberg GmbH Spenglerstrae 99 D-23556 Lbeck Tel. +49-451-8 79 75 0 Fax +49-451-8 79 75 99 [email protected] www.mankenberg.de
WIR REGELN DAS SCHONFIRMLY IN CONTROL
Selection Float ValvesS
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Mankenberg GmbH Spenglerstrae 99 D-23556 Lbeck Tel. +49-451-8 79 75 0 Fax +49-451-8 79 75 99 [email protected] www.mankenberg.de
WIR REGELN DAS SCHONFIRMLY IN CONTROL
for installation in vesselsFlow directionW S E
Operatingpress. bar
Kvs-valuem3/h
P P
P
P
88
2.80.3
8 0.3
--
19521
- 82
for installation in pipelinesFlow directionWP
SP
E
P
P
P
P
P
P
Operating Kvs-valuepress. bar
4m3/h
3 - 801640
44
40 46
--
100160
- 1800
Connectionscrewed flanged DN
3/8 -3/8 -
1 1/220
1 40
****
SS
- 150
- 80**** P
**** P
Connectionscrewed flanged DN
151515
125
- 100
SS****
--
100150
- 400
**** P
Notes Type
inflow valve made of GG-25inflow or outflow valve, inflow only for closed vessels
1294
inflow or outflow valve, for open or closed vessels 98
Notes Type
economical valve up to 4 bar 16economical stainless steel valve, single seat, balancedstandard valve, single seat, balanced
66e16e
double seat 26
for installation on vesselsFlow directionWP
SP
E
P
P
P
P
P
P
P
Operating Kvs-valuepress. bar
4m3/h
3 - 808
1624
4040
446
--
81100
--
1601800
Pilot controlled float valvesFlow directionW S EP
Level regulatorsFlow direction
P P
Operatingpress. bar
Kvs-valuem3/h
40 20
Operating Kvs-value
- 3200
Connectionscrewed flanged DN
15251515
125
- 100
SS****
-100100
--
150400
****
**** P
Connectionscrewed flanged DN
Connection
50****
SS
- 600
SS
Notes Type
economical valve up to 4 bar 55direct feed or drain through the mounting flange at the vesseleconomical stainless steel valve, single seat, balanced
7167e
standard valve, single seat, balanceddouble seat
55e56
Notes Type
Design and price on request 8,50
Notes TypeW S
P
E
P
P
Overflow ProtectionFlow directionW S E
press. bar10
m3/h
1016
0.40.43.3
Operatingpress. bar
Kvs-valuem3/h
Compressed Air Shutoff Valves
P
P
Flow directionW S E
P
P
1616
1111
--
230230
Operatingpress. bar
Kvs-valuem3/h
88
22
--
510510
screwed1/2
3/41/2-
flanged DN
1 20
Connectionscrewed flanged DN
- 25
****
**** P
****
****
P
P
****
SS
3232
Connectionscrewed flanged DN
1515
--
200200
--
200200
****
SS
WSE
= horizontal==
verticalangled
small level regulator 10small level regulator with sight glasslevel regulator for higher flow rates
1160
Notes Type
with PTB approval for flammable liquids, body grey cast ironwith PTB approval for flammable liquids, body cast steel
36S36SF
Notes Type
safety device for waterworks with pressure vessel (compressed air) safety device for waterworks with pressure vessel (compressed air)
8082
**** other connections available P stainless steel deep drawn
**** other connections available P stainless steel deep drawn
**** other connections available P stainless steel deep drawn
**** other connections available P stainless steel deep drawn
**** other connections available P stainless steel deep drawn
**** other connections available P stainless steel deep drawn
**** other connections available P stainless steel deep drawn
Special designs on request. The pressure has always been indicated as overpressure.Mankenberg reserves the right, to alter or improve the designs or specifications of the products described herein without notice.
Mankenberg GmbH Spenglerstrae 99 D-23556 Lbeck Tel. +49-451-8 79 75 0 Fax +49-451-8 79 75 99 [email protected] www.mankenberg.de
WIR REGELN DAS SCHONFIRMLY IN CONTROL
Level Control Valves NV 12, 12P
DescriptionFloat valves automatically control liquid levels in sealed or open(non-pressurised) tanks and vessels without requiring externalenergy. The float registers the liquid level and directly controls thevalve via a lever. A change in the liquid level immediately results ina changed flow volume.
The NV 12 and NV 12 P float valves are standard inlet (feed) val-ves for installation in tanks; they are made of cast iron. The valvecone is fitted with a soft seal.
The following note applies to float valves fitted with float bars:If the liquid level is below the float bar i.e. if the float points down-wards, a guide for the float bar should be installed.NV 12P is fitted with a parallel guide which prevents float oscillati-on if a float bar guide is not fitted in the tank.
Please state working pressure range when enquiring or ordering.
STANDARD EQUIPMENT Ball or cylindrical float (see overleaf) NV 12P with parallel guide
OPTIONS Various seal materials suitable for your medium
Operating instructions, Know How and Safety instructions must beobserved.The pressure has always been indicated as overpressure.We reserve the right to alter technical specifications without notice.
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Technical DataConnectionNominal Pressure
DN 20 - 150PN 16
Kvs-valueDesign
2.8 - 195 m3/hfeed valvehorizontal inflow
for installation in vessels with or without parallel guideup to 110 C
Kvs-values [m3/h]nom. dia. DNKvs-value m3/h
20-252.8
32-409.5
5012
6525
8044
10070
125110
150195
Pressure Ranges [bar]operating pressure [bar] 0 - 2 0 - 4 0 - 8
Mankenberg GmbH Spenglerstrae 99 D-23556 Lbeck Tel. +49-451-8 79 75 0 Fax +49-451-8 79 75 99 [email protected] www.mankenberg.de
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*only for type 12 DN 20 + 25 working pressure ranges 0 - 2 and 0 - 4 bar.(without float rod)
parallel guidefor type 12P
MaterialsBody
Cone
up to DN 25 grey cast ironfrom DN 32 spheroidal cast iron
CrNiMo-steelCone GuideSeatValve SealFloat Rod
grey cast irongrey cast ironEPDMCrNiMo-steel
Float CrNiMo-steel
Dimensions [mm]
sizenominal diameter DN
20 25 32 40 50 65 80 100 125 150ABCE
35068
35068
10030
10030
45588
45588
12540
12540
47095
610104
14050
17050
710113
875135
18060
22560
1160165
1350180
310100
350100
FG
555
555
805
805
8010
8010
10010
10020
10020
10020
Weight without float [kg]nominal diameter DN
20 25 32 40 50 65 80 100 125 1501.8 2 4.5 5 7 9 11 18 27 35
Float Dimensionpressure
rangenominal diameter DN20 25 32 40 50 65 80 100 125 150
bar0 - 20 - 4
ball float SR 3 in mm *160 160160cylindrical float SR 8 = height in mm
160
0 - 20 - 40 - 8
--
--
200 200
200200
200200
200 200
200200
200240
240 280
240240
240280
280 340
280305
305340
380 420
G
C
A
F
BE
Level Control Valve NV 12, 12Pfor installation in vessels with or without parallel guideup to 110 C
Special designs on request.The pressure has always been indicated as overpressure.Mankenberg reserves the right, to alter or improve the designs or specifi-cations of the products described herein without notice.
Mankenberg GmbH Spenglerstrae 99 D-23556 Lbeck Tel. +49-451-8 79 75 0 Fax +49-451-8 79 75 99 [email protected] www.mankenberg.de
WIR REGELN DAS SCHONFIRMLY IN CONTROL
Level Control Valves NV 16, 26
DescriptionThe NV 16 and NV 26 float valves automatically control liquidlevels in sealed or open (non-pressurised) tanks and vessels wi-thout requiring external energy. The float registers the liquid leveland directly controls the valve via a lever. A change in the liquidlevel immediately results in a changed flow volume.
NV 16 and NV 26 are pipeline valves for horizontal or vertical flow.The standard soft seal ensures perfect sealing of the valve. Thevalves are fitted with a float bar on which a float featuring an innertube is mounted (cylindrical float SR 8). By changing the positionof the float on the bar the required liquid level is infinitely variable.The following note applies to float valves fitted with float bars:If the liquid level is below the float bar i.e. if the float points down-ward, a guide for the float bar should be installed.
When enquiring or ordering please quote the suffix letters givenbelow:Z = Inlet. Valve closes when float risesA = Outlet. Valve closes when float dropsw = Horizontal flowo = Upward flowu = Downward flowExample: Float valve NV 16Z/w (inlet valve for horizontal flow).
STANDARD EQUIPMENT Float bar stainless steel Cylindrical float SR 8 stainless steel
OPTIONS Rubber or plastic coating for corrosive media Various seal materials suitable for your medium
Operating instructions, Know How and Safety instructions must beobserved.The pressure has always been indicated as overpressure.We reserve the right to alter technical specifications without notice.
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Technical DataConnection NV 16
NV 26::
Nominal Pressure
Operating Pressure
DN 15 - 350DN 400
::
NV 16NV 26
::
DN 15 - 100DN 125 - 400PN 16 - 40PN 10 - 16up to 4 barup to 16 bar
Kvs-valueDesign
2.6 - 1800 m3/hNV 16 :NV 26 :
single seatdouble seat
Float Valve, single seated, balanced, installation in pipelinesfor liquids up to 130 C
Please state working pressure range, when inquiring orordering
Pressure Ranges [bar] and Kvs-values [m3/h]Type
press. rangeNV 16nominal diameter DN
bar0 - 10 - 4
152.6
203.5
2.6 3.5
253.5
325.7
3.5 5.7
407.6
5015
7.6 7.6
6527
8047
15 27
1008047
Pressure Range [bar] and Kvs-values [m3/h]Type
press. rangeNV 26nominal diameter DN
bar000
- 1--
416
125140
150230
8446
14084
200380
250570
230140
380230
3001000
3501000
570380
570380
40018001000570
NV 16
NV 26
Mankenberg GmbH Spenglerstrae 99 D-23556 Lbeck Tel. +49-451-8 79 75 0 Fax +49-451-8 79 75 99 [email protected] www.mankenberg.de
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MaterialsBody PN 16 up to DN 25 grey cast iron
from DN 32 spheroidal cast iron
Cone and SeatCone Guide
PN 25 - 40PN 16 - 40
cast steeloptional CrNiMo-steel *Cr-steel optional CrNiMo-steelgun metal optional CrNiMo-Stahl
Valve SealLinkageFloat RodFloat
EPDMsteel zinced or steel, optional CrNiMo-steelCrNiMo-steelCrNiMo-steel
*dimensions and weights see sheet no. SR/2.1.041.1
A/w
Z/wB
CA
EF
D F
A
B
B
BC
FF
G
GZ/u, Z/o
A/u, A/o
Dimensions [mm] and Weights [kg] NV 16 PN 10/16*
size nominal diameter DN
15 20 25 32 40 50 65 80 100ABCD
130175
150175
55360
55360
160175
180195
55360
125480
200195
230195
125480
125480
290290
310290
105640
105640
350290105640
EFGkg
270315
270315
456
457
270315
360420
458
6011
360420
360420
6014
6019
480560
480560
8040
8048
4805608060
Dimensions [mm] and Weights [kg] NV 26 PN 10/16*
sizenominal diameter DN
125 150 200 250 300 350 400ABCD
400325
480400
185760
200895
600440
730490
2101120
2501280
850540
980540
2901440
2901440
1100555385
1600EFGkg
570665
675785
9593
110128
840980
9601120
140198
160276
10801260
10801260
180480
180535
12001400200690
NV 16 necessary Cylindrical Float SR 8 [mm] ( = hight)*press. range
bar nominal diameter DN
15 20 25 32 40 50 65 80 10000
--
14
200240
200240
200240
200240
200280
240280
280305
280340
305420
NV 26 necessary Cylindrical Float SR 8 [mm] ( = hight)*press. range
bar nominal diameter DN
125 150 200 250 300 350 400000
--
14
- 16
240280
305340
380 420
305340
340380
460 500
380420
380420
600 600
380460600
*dimension and weights see sheet no. SR/2.1.041.1
* up to DN 100 made of CrNiMo-steel use NV 66e
*PN 25/40 on request
*PN 25/40 on request
Level Control Valve NV 16, 26Float Valve, single seated, balanced, installation in pipelinesfor liquids up to 130 C
Special designs on request.The pressure has always been indicated as overpressure.Mankenberg reserves the right, to alter or improve the designs or specifi-cations of the products described herein without notice.
Mankenberg GmbH Spenglerstrae 99 D-23556 Lbeck Tel. +49-451-8 79 75 0 Fax +49-451-8 79 75 99 [email protected] www.mankenberg.de
WIR REGELN DAS SCHONFIRMLY IN CONTROL
Level Control Valves NV 16e, 55e
DescriptionFloat valves automatically control liquid levels in sealed or open(non-pressurised) tanks and vessels without requiring externalenergy. The float registers the liquid level and directly controls thevalve via a lever. A change in the liquid level immediately results ina changed flow volume.
NV 16e is a pipeline valve for horizontal or vertical flow. NV 55e isa pipeline valve complete with tank connecting flange for verticalflow. The valve cone is fitted with a soft seal. The valves are fittedwith a float bar on which a float featuring an inner tube is mounted(normally a cylindrical float type SR 8). By changing the position ofthe float on the bar the required liquid level is infinitely variable.The float of discharge valves must be provided with sand filling bythe customer.
The following note applies to float valves fitted with float bars:If the liquid level is below the float bar i.e. if the float points down-ward, a guide for the float bar should be installed.
When enquiring or ordering please quote the suffix letters givenbelow:Z = Inlet. Valve closes when float risesA = Outlet. Valve closes when float dropsw = Horizontal flowo = Upward flowu = Downward flowExample: Float valve NV 16e Z/w (inlet valve for horizontal flow).
STANDARD EQUIPMENT Float bar stainless steel Cylindrical float SR 8 stainless steel
OPTIONS Rubber or plastic coating for corrosive media Various seal materials suitable for your medium
Operating instructions, Know How and Safety instructions must beobserved.The pressure has always been indicated as overpressure.We reserve the right to alter technical specifications without notice.
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Technical DataConnectionsNominal Pressure
DN 15 - 150PN 16 - 40
Kvs-value 4 - 160 m3/h
Float Valve, single seated, balanced, installation in pipelines and at tanksfor liquids up to 130 C
Kvs-values [m3/h]nom. dia. Kvs-value
DNm3/h
154
205
256
4020
5032
NV 16e
NV 55e
Kvs-values [m3/h]nom. dia. Kvs-value
DNm3/h
6550
8080
100100
125140
150160
Dimensions [mm] and Weights [kg] NV 55e PN 16*
sizenominal diameter DN
15 20 25 40 50 65 80 100 125 150ABCD
130180
150180
5595
5595
160180
200200
5595
125115
230200
290300
125115
105175
310300
350300
105175
105175
400340
480410
185235
200255
EF
DNWeights without float
21030
21030
100 100
kg 10 11
21030
28040
100 125
28040
42060
125 200
12 21 24 45
42060
42060
200 200
42060
49070
250 250
53 65 103 133
Mankenberg GmbH Spenglerstrae 99 D-23556 Lbeck Tel. +49-451-8 79 75 0 Fax +49-451-8 79 75 99 [email protected] www.mankenberg.de
WIR REGELN DAS SCHONFIRMLY IN CONTROL
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MaterialsBody PN 16 up to DN 25 grey cast iron
from DN 40 spheroidal cast iron
Cone and SeatPiston and SpindleValve Seal
PN 25/40 cast steelgrey cast iron / Cr-steelCr-steelEPDM
LinkageFloat RodFloat
steel zinced / steelCrNiMo-steelCrNiMo-Stahl
Dimensions [mm] and Weights [kg] NV 16e PN 16*
sizenominal diameter DN
15 20 25 40 50 65 80 100 125 150ABCD
130175
150175
55360
55360
160175
200195
55360
125480
230195
290290
125480
105640
310290
350290
105640
105640
400325
480400
185760
200895
EFG
Weights without float
270315
270315
45 45
kg 6 7
270315
360420
45 60
360420
480560
60 80
8 14 19 40
480560
480560
80 80
570665
675785
95 110
48 60 98 128* PN 25/40 on request
Necessary cylindrical float SR 8 [mm] ( = hight) *nom. diameterfloat
DNmm
15200
20200
25200
40240
50240
65305
80305
100305
125340
150340
*dimensions and weights see sheet SR 2.1.041.1
* PN 25/40 on request
A/w
NV 16e
NV 55e
tank add-on flangenominal diameter DN
Z/wB
CA
EF
DF
A
B
B
BC
FF
G
GZ/u, Z/o
A/u, A/o
Z/u, Z/o
A/u, A/o
A
B
BD
C
F
F
E
E
Level Control Valve NV 16e, 55eFloat Valve, single seated, balanced, installation in pipelines and at tanksfor liquids up to 130 C
Special designs on request.The pressure has always been indicated as overpressure.Mankenberg reserves the right, to alter or improve the designs or specifi-cations of the products described herein without notice.
Mankenberg GmbH Spenglerstrae 99 D-23556 Lbeck Tel. +49-451-8 79 75 0 Fax +49-451-8 79 75 99 [email protected] www.mankenberg.de
WIR REGELN DAS SCHONFIRMLY IN CONTROL
Level Control Valves NV 55, 56
DescriptionThe NV 55 and NV 56 float valves automatically control liquidlevels in sealed or open (non-pressurised) tanks and vessels wi-thout requiring external energy. The float registers the liquid leveland directly controls the valve via a lever. A change in the liquidlevel immediately results in a changed flow volume.
NV 55 and NV 56 are pipeline valves with tank connecting flangefor vertical flow. The standard soft seal ensures perfect sealing ofthe valve.
The valves are fitted with a float bar on which a float featuring aninner tube is mounted (cylindrical float SR 8). By changing the po-sition of the float on the bar the required liquid level is infinitely va-riable.
The following note applies to float valves fitted with float bars:If the liquid level is below the float bar i.e. if the float points down-ward, a guide for the float bar should be installed.
When enquiring or ordering please quote the suffix letters givenbelow:Z = Inlet. Valve closes when float risesA = Outlet. Valve closes when float dropso = Upward flowu = Downward flowr = includes sealed spindleExample: Float valve NV 55Z/o (inlet valve for upward flow).
STANDARD EQUIPMENT Tank connecting flange Float bar stainless steel Cylindrical float SR 8 stainless steel
OPTIONS Rubber or plastic coating for corrosive media Various seal materials suitable for your medium Spindle sealed against the tank (for example with Rieler plants)
Operating instructions, Know How and Safety instructions must beobserved.The pressure has always been indicated as overpressure.We reserve the right to alter technical specifications without notice.
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Technical DataConnection NV 55
NV 56::
Nominal Pressure
Operating Pressure
DN 15 - 350DN 400
::
NV 55NV 56
::
DN 15 - 100DN 125 - 400PN 16 - 40PN 10 - 16up to 4 barup to 16 bar
Kvs-valueDesign
2.6 - 1800 m3/hNV 55 :NV 56 :
single seatdouble seat
Float Valve, single and double seated, installation at tanksfor liquids up to 130 C
Please state working pressure range, when inquiring orordering
Pressure Range [bar] and Kvs-values [m3/h]type
press. rangeNV 55nominal diameter DN
bar0 - 10 - 4
152.6
203.5
2.6 3.5
253.5
325.7
3.5 5.7
407.6
5015
7.6 7.6
6527
8047
15 27
1008047
Pressure Range [bar] and Kvs-values [m3/h]type
press. rangeNV 56nominal diameter DN
bar000
- 1--
416
125140
150230
8446
14084
200380
250570
230140
380230
3001000
3501000
570380
570380
40018001000570
NV 56
NV 55
Mankenberg GmbH Spenglerstrae 99 D-23556 Lbeck Tel. +49-451-8 79 75 0 Fax +49-451-8 79 75 99 [email protected] www.mankenberg.de
WIR REGELN DAS SCHONFIRMLY IN CONTROL
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tank add-on flangenominal diameter DN
Z/u, Z/o
A/u, A/o
A
B
BD
C
F
F
E
EDimensions [mm] and Weights [kg] NV 55 PN 10/16*
sizenominal diameter DN
15 20 25 32 40 50 65 80 100ABCD
130180
150180
5595
5595
160180
180200
5595
125115
200200
230200
125115
125115
290300
310300
105175
105175
350300105175
EF
DNkg
21030
21030
10010
10011
21030
28040
10012
12519
28040
28040
12521
12524
42060
42060
20045
20053
42060
20065
Dimensions [mm] and Weights [kg] NV 56 PN 10/16*
sizenominal pressure
125 150 200 250 300 350 400ABCD
400340
480410
185235
200255
600460
730500
210295
250350
850550
980550
290380
290380
1100550385380
EF
DNkg
42060
49070
25098
250133
63090
700100
300222
350302
770110
770110
400510
400570
770110500725
NV 55 necessary Cylindrical Float SR 8 [mm] ( = hight)*press. range
bar nominal diameter DN
15 20 25 32 40 50 65 80 10000
--
14
200240
200240
200240
200240
200280
240280
280305
280340
305420
NV 56 necessary Cylindrical Float SR 8 [mm] ( = hight)*Druckbereich
bar Nennweite DN
125 150 200 250 300 350 400000
--
14
- 16
240280
305340
380 420
305340
340380
460 500
380420
380420
600 600
380460600
* PN 25/40 on request
*dimensions and weights see sheet no. SR 2.1.041.1
MaterialsGehuse PN 16 up to DN 25 grey cast iron
from DN 32 spheroidal cast iron
Cone and SeatCone Guide
PN 25 - 40PN 16 - 40
cast steeloptional CrNiMo-steel *Cr-steel optional CrNiMo-steelgun metal optional CrNiMo-steel
Valve Seal EPDM
*dimensions and weights see sheet no. SR 2.1.041.1
* PN 25/40 on request
Level Control Valve NV 55, 56Float Valve, single and double seated, installation at tanksfor liquids up to 130 C
* up to DN 100 made of CrNiMo-steel use NV 67e
Special designs on request.The pressure has always been indicated as overpressure.Mankenberg reserves the right, to alter or improve the designs or specifi-cations of the products described herein without notice.
Mankenberg GmbH Spenglerstrae 99 D-23556 Lbeck Tel. +49-451-8 79 75 0 Fax +49-451-8 79 75 99 [email protected] www.mankenberg.de
WIR REGELN DAS SCHONFIRMLY IN CONTROL
Level Control Valves NV 66e, 67e
DescriptionFloat valves automatically control liquid levels in sealed or open(non-pressurised) tanks and vessels without requiring externalenergy. The float registers the liquid level and directly controls thevalve via a lever. A change in the liquid level immediately results ina changed flow volume.
NV 66 and NV 67e are pipeline valves for tank mounting capableof handling large volumes. NV 66e is a pipeline valve for horizontalor vertical flow. NV 67e is a pipeline valve with tank connectingflange for vertical flow. Both valves are made from deep-drawnstainless steel featuring excellent corrosion resistance. The valvecone is fitted with a soft seal.
Top and bottom sections of the valve body are connected by aclamp ring and two bolts. Servicing/maintenance is easy and doesnot call for special tooling.
The valves are fitted with a float bar on which a float featuring aninner tube is mounted (cylindrical float SR 8). By changing the po-sition of the float on the bar the required liquid level is infinitely va-riable.
The following note applies to float valves fitted with float bars:If the liquid level is below the float bar i.e. if the float points down-ward, a guide for the float bar should be installed.
When enquiring or ordering please quote the suffix letters givenbelow::Z = Inlet. Valve closes when float risesA = Outlet. Valve closes when float dropsw = Horizontal flowo = Upward flowu = Downward flowExample: Float valve NV 66e Z/w (inlet valve for horizontal flow).
STANDARD EQUIPMENT Float bar stainless steel Cylindrical float SR 8 stainless steel Quick-release body clamp ring
OPTIONS Various seal materials suitable for your medium
Operating instructions, Know How and Safety instructions must beobserved.The pressure has always been indicated as overpressure.We reserve the right to alter technical specifications without notice.
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Technical DataConnectionNominal Pressure
DN 15 - 100PN 16
Kvs-values 4 - 100 m3/h
Float Valve, single seated, balanced, installation in pipelines and at tanksfor liquids up to 130 C
Kvs-values [m3/h]nominal diameter DN
15 20 25 40 50 65 80 1004 5 6 20 32 50 80 100
NV 67e
NV 66e
Mankenberg GmbH Spenglerstrae 99 D-23556 Lbeck Tel. +49-451-8 79 75 0 Fax +49-451-8 79 75 99 [email protected] www.mankenberg.de
WIR REGELN DAS SCHONFIRMLY IN CONTROL
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MaterialsBodyCone, Seat
CrNiMo-steelCrNiMo-steel
Piston, SpindleValve SealLinkageFloat Rod
CrNiMo-steelEPDMCrNiMo-steelCrNiMo-steel
Float CrNiMo-steel
Dimensions [mm]
sizenominal diameter DN
15 20 25 40 50 65 80 100ABDE
160185
160185
360270
360270
160185
200220
360270
480360
230220
290325
480360
640480
310325
350325
640480
640480
FG
31545
31545
31545
42060
42060
56080
56080
56080
Weights [kg]nominal diameter DN
15 20 25 40 50 65 80 1005.8 6.2 6.5 14 14.5 28.5 30.5 31.5
Cylindrical Float SR 8 [mm] ( = height) *nominal diameter DNfloat mm
15200
20200
25200
40240
50240
65305
80305
100305
Weights [kg]nominal diameter DN
15 20 25 40 50 65 80 10011.5 12 15 22.5 23 44.5 46.5 47.5
Dimensions [mm]
sizenominal diameter DN
15 20 25 40 50 65 80 100ABCF
160185
160185
125210
125210
160185
200220
125210
145280
230220
290317
145280
211420
310317
350317
211420
211420
GH
30DN 100
30DN 100
30DN 100
40DN 125
40DN 125
60DN 200
60DN 200
60DN 200
*dimensions and weights see sheet no. SR 2.1.041.1
B
BC
A
G
F
G
F
A/u,A/o
Z/u,Z/o
NV 67e
Z/w
A/w
A/u,A/o
Z/u,Z/o
A
B B
F
FE
F
F
G
A
B
B
DNV 66e
G
H
H
Level Control Valve NV 66e, 67eFloat Valve, single seated, balanced, installation in pipelines and at tanksfor liquids up to 130 C
Special designs on request.The pressure has always been indicated as overpressure.Mankenberg reserves the right, to alter or improve the designs or specifi-cations of the products described herein without notice.
Mankenberg GmbH Spenglerstrae 99 D-23556 Lbeck Tel. +49-451-8 79 75 0 Fax +49-451-8 79 75 99 [email protected] www.mankenberg.de
WIR REGELN DAS SCHONFIRMLY IN CONTROL
Level Control Valves NV 71
DescriptionFloat valves automatically control liquid levels in sealed or open(non-pressurised) tanks and vessels without requiring externalenergy. The float registers the liquid level and directly controls thevalve via a lever. A change in the liquid level immediately results ina changed flow volume.
NV 71 is a pipeline valve for tank mounting complete with tankconnecting flange for direct inlet/outlet. The valve cone can be fit-ted with a soft seal (up to 110 C) or a metallic seal (up to 300 C).NV 71 is supplied with a ball float type SR 3 fixed to the float bar.
When enquiring or ordering please quote the suffix letters givenbelow:Z = Inlet. Valve closes when float risesA = Outlet. Valve closes when float dropsw = Horizontal flowo = Upward flowu = Downward flowExample: Float valve NV 71 Z/u (inlet valve for downward flow).
STANDARD EQUIPMENT SR 3 ball float stainless steel
OPTIONS Stainless steel construction all components stainless steel Rubber or plastic coating for corrosive media Various seal materials suitable for your medium
Operating instructions, Know How and Safety instructions must beobserved.The pressure has always been indicated as overpressure.We reserve the right to alter technical specifications without notice.
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Technical DataConnectionNominal Pressure
DN 25 - 150PN 10
Operating PressureKvs-value
up to 8 bar, in 3 ranges1.6 - 81 m3/h
Single and double seated Float Valve, installation in pipelines and at tankselbow design, for liquids up to 110 / 300 C
Please state working pressure range, when inquiring orordering
Pressure Ranges [bar], Kvs-values [m3/h]
press. rangebar
nominal diameter DN25 32 40 50
000
--
24
- 8
5.13.3
105.1
1.6 2.9
158.7
2112
4.5 6.4
65 80 100, 125, 1503120
5735
10 17
814928
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MaterialsBodyCone, Seat
steel optional CrNiMo-steelgun metal optional CrNiMo-steel
Cone GuideValve SealLinkageFloat
Cr-steel optional CrNiMo-steelEPDM up to 110 C or metallic up to 300 Csteel optional CrNiMo-steelCrNiMo-steel
Dimensions [mm] and Weights [kg]
sizenominal diameter DN
25 32 40 50 65 80 100 125 150ABCE
120125
140150
200310
240350
140150
140150
240380
240415
160170
175180
300495
310630
200200
200200
350775
350775
200200395775
Fball float SR 3
Weights
DN125 DN150
110 130
kg 10 15
DN150 DN150
160 200
DN200 D 200
220 250
17 19 41 44
DN250 DN250
280 280
DN250
280
58 60 62
from DN 40 float fitted through manhole
NV 71 A/u
NV 71 A/o
C
B
AE
F
AE
B
FC
NV 71 Z/u
NV 71 Z/o
B
AE
F
C
C
B
AE
F
Level Control Valve NV 71Single and double seated Float Valve, installation in pipelines and at tankselbow design, for liquids up to 110 / 300 C
Mankenberg GmbH Spenglerstrae 99 D-23556 Lbeck Tel. +49-451-8 79 75 0 Fax +49-451-8 79 75 99 [email protected] www.mankenberg.de
WIR REGELN DAS SCHONFIRMLY IN CONTROL
Special designs on request.The pressure has always been indicated as overpressure.Mankenberg reserves the right, to alter or improve the designs or specifi-cations of the products described herein without notice.
Mankenberg GmbH Spenglerstrae 99 D-23556 Lbeck Tel. +49-451-8 79 75 0 Fax +49-451-8 79 75 99 [email protected] www.mankenberg.de
WIR REGELN DAS SCHONFIRMLY IN CONTROL
Level Control Valves NV 94
DescriptionFloat valves automatically control liquid levels in sealed or open(non-pressurised) tanks and vessels without requiring externalenergy. The float registers the liquid level and directly controls thevalve via a lever. A change in the liquid level immediately results ina changed flow volume.
NV 94 is a float valve for horizontal or vertical installation inside atank as inlet or outlet valve. This valve is made entirely of stainlesssteel featuring excellent corrosion resistance. The valve cone canbe fitted with a soft seal (up to 130 C) or a metallic seal (up to 300C). NV 71 is supplied with a ball float type SR 3 fixed to the floatbar.
When enquiring or ordering please quote the suffix letters givenbelow:Z = Inlet. Valve closes when float risesA = Outlet. Valve closes when float dropsw = Horizontal flowo = Upward flowu = Downward flowExample: Float valve NV 94 Zw (inlet valve for horizontal flow).
STANDARD EQUIPMENT All stainless steel construction SR 3 ball float stainless steel
OPTIONS Various seal materials suitable for your medium
Operating instructions, Know How and Safety instructions must beobserved.The pressure has always been indicated as overpressure.We reserve the right to alter technical specifications without notice.
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Technical DataConnectionNominal Pressure
G 3/8A - 1 1/2A (Zapfen)PN 16
Kvs-value 0.3 - 21 m3/h
Float Valves for installation in closed vesselsup to 300 C
Please state working pressure range, when inquiring orordering
Kvs-values [m3/h]nom. diameter G .... Apress. range 0 - 2 bar
3/81.2
1/22.8
3/45.1
110
1 1/415
1 1/221
press. range 0 - 4 barpress. range 0 - 8 bar
0.70.3
1.90.9
2.81.9
5.12.8
8.74.4
126.4
Pressure Ranges [bar]0 - 2 0 - 4 0 - 8
Mankenberg GmbH Spenglerstrae 99 D-23556 Lbeck Tel. +49-451-8 79 75 0 Fax +49-451-8 79 75 99 [email protected] www.mankenberg.de
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MaterialsBodyCone
CrNiMo-steelCrNiMo-steel
Seat
Valve Seal
Float
CrNiMo-steelEPDM up to 130 Cmetallic up to 300 CCrNiMo-steel
Dimensions [mm]
sizenominal diameter G...A
3/8 1/2 3/4 1 1 1/4 1 1/2BCDE
956
13.575
1234
1642
15.575
19.597
1642
2055
24110
26120
2263
2563
FG
11043
16557
19057
22572
28580
32090
Weights [kg]nominal diameter G ... A
3/8 1/2 3/4 1 1 1/4 1 1/20.6 0.9 1.3 2 3.5 4.5
Dimensions Ball Float SR 3 [ mm]nominal diameter G ... A
3/8 1/2 3/4100 110 130
1 1 1/4 1 1/2150 180 200
D
GC
B F
Z/u
D
GC
BFA/u
D
GC
FBZ/o
Z/w, (A/w)
G
C
B E
FD
Level Control Valve NV 94Float Valves for installation in closed vesselsup to 300 C
Special designs on request.The pressure has always been indicated as overpressure.Mankenberg reserves the right, to alter or improve the designs or specifi-cations of the products described herein without notice.
Mankenberg GmbH Spenglerstrae 99 D-23556 Lbeck Tel. +49-451-8 79 75 0 Fax +49-451-8 79 75 99 [email protected] www.mankenberg.de
WIR REGELN DAS SCHONFIRMLY IN CONTROL
Level Control Valves NV 98
DescriptionFloat valves automatically control liquid levels in sealed or open(non-pressurised) tanks and vessels without requiring externalenergy. The float registers the liquid level and directly controls thevalve via a lever. A change in the liquid level immediately results ina changed flow volume.
NV 98 is a float valve for horizontal installation inside a tank as in-let valve with outlet at the bottom. This valve is made entirely ofstainless steel featuring excellent corrosion resistance. NV 98 R(spigot connection) is fitted with a SR 3 ball float, NV 98 F (flangeconnection) is fitted with a SR 8 cylindrical float that is adjustableon its float bar. NV 98 FP is fitted with a parallel float guide whichprevents oscillation of the float. The valve cone is fitted with a softseal.
The following note applies to float valves fitted with float bar:If the liquid level is below the float bar i.e. if the float points down-wards, a guide for the float bar should be installed.
When enquiring or ordering please quote the suffix letters givenbelow:R = Spigot connetionF = Flange connectionP = Parallel guideZ = Inlet. Valve closes when float risesu = Downward flowExample: Float valve tape 98 R Z/u (inlet valve with spigot connec-tion, downward flow).
STANDARD EQUIPMENT All stainless steel construction NV 98 R with ball float SR 3 NV 98 F with cylindrical float SR 8 NV 98FP with cylindrical float SR 8
and float bar parallel guide
OPTIONS Various seal materials suitable for your medium
Operating instructions, Know How and Safety instructions must beobserved.The pressure has always been indicated as overpressure.We reserve the right to alter technical specifications without notice.
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Technical DataConnection G 3/8A - 1 1/2 A (Zapfen)
DN 40 - 80Nominal PressureKvs-value
PN 160.3 - 82 m3/h
Float Valves for installation in vesselsup to 130 C
Please state working pressure range, when inquiring orordering
Kvs-values [m3/h]nom. diameter
0 - 2G..Abar
3/80.7
1/21.95
3/45
17.9
1 1/413.3
1 1/217.8
press. range 0 - 40 - 8
barbar
0.70.3
1.950.7
2.91.95
52.9
7.95
13.36.4
Pressure Rangesnom. diameterG 3/8 - 1
pressure range [bar]0 - 2 0 - 4 0 - 8
DN 40 - 80 0 - 8
Kvs-values [m3/h]nom. diameterpress. range 0 - 8
DNbar
4020
5032
6550
8082
NV 98 FZ/u
Mankenberg GmbH Spenglerstrae 99 D-23556 Lbeck Tel. +49-451-8 79 75 0 Fax +49-451-8 79 75 99 [email protected] www.mankenberg.de
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MaterialsBodyCone
CrNiMo-steelCrNiMo-steel
SeatValve SealFloat
CrNiMo-steelG 3/8 FPM, G 1/2 - 1 1/2 EPDMCrNiMo-steel NV 98 RZ/u
Dimensions [mm] NV 98 F + NV 98 FP
sizenominal diameter DN
40 50 65 80ABCD
8560
9575
105 70
125 90
9575
11080
125 90
140 125
EFHK
145 43
165 53
330 280
330 305
LM
28055
30555
165 64
180 80
440 340
530 380
34080
38080
Weights [kg] NV 98 F + NV 98 FPnominal diameter DN
40 50 65 806.5 9.5 12.5 13.5
D
E
H
K
L
C
D
E
B
H
K
L
M
1000
1000
NV 98 FPZ/u
A
A
F
CB
F
Level Control Valve NV 98Float Valves for installation in vesselsup to 130 C
Dimensions [mm] NV 98 R
sizenominal diameter G..A
3/8 1/2 3/4 1 1 1/4 1 1/2ABCD
4060
4060
85 60
85 60
4060
4565
85 60
90 60
4772
4777
96 60
101 60
EFGH
11016
11016
3/8200
1/2200
IK
135 100
145 110
11020
11520
1/2200
3/4200
12323
12825
1200
1 1/4200
165 130
185 150
215 180
235 200
Weights [kg] NV 98 Rnominal diameter G ... A
3/8 1/2 3/4 1 1 1/4 1 1/20.9 0.9 1.4 1.5 2.7 3
Special designs on request.The pressure has always been indicated as overpressure.Mankenberg reserves the right, to alter or improve the designs or specifi-cations of the products described herein without notice.
C
D
EB
H
K
F
A
IG
Mankenberg GmbH Spenglerstrae 99 D-23556 Lbeck Tel. +49-451-8 79 75 0 Fax +49-451-8 79 75 99 [email protected] www.mankenberg.de
WIR REGELN DAS SCHONFIRMLY IN CONTROL
Level Control Valves NV 36SF
DescriptionThis overfill preventer valve has been tested by Physikalisch-Tech-nische Bundesanstalt, the Technischer berwachungsverein(TV) and the Deutscher Ausschu fr brennbare Flssigkeitenand approved for systems subject to the above regulations. Eachoverfill preventer valve is given its own factory ID number.
An overfill preventer valve operates under direct float control andrequires no external energy. It is installed in the vertical filler pipein the storage tank. At the end of the filling process the float is lif-ted by the fluid and closes the filler pipe. The valve closes softlyand without pressure surges.
Features: Robust, proven and reliable design Easy installation Requires no energy input Can be installed at any site, independent of supply networks
According to the revised version of the German "Verordnung berbrennbare Flssigkeiten" (VbF) (Directive governing flammable li-quids) dated 5.6.1970 and the associated German "TechnischeRegeln ber brennbare Flssigkeiten" (TRbF) (Technical Rules forflammable liquids), systems or system components used in Ha-zard Areas Zone 0 (TRbF 510), must have design approval in ac-cordance with 11a of VbF.
STANDARD EQUIPMENT Lenticular float SR 5 or SR 6 (see overleaf)
Operating instructions, Know How and Safety instructions must beobserved.The pressure has always been indicated as overpressure.We reserve the right to alter technical specifications without notice.
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Technical DataConnectionNominal Pressure
DN 32 - 200PN 16
Operating PressureKvs-value
0 - 4 and 0 - 16 bar11 - 230 m3/h
Overflow Protection for flammable liquidsup to 80 C
Please state working pressure range, when inquiring orordering
Test Symbol of thePhysical Technical Federal Institutenominal diameter DN test symbol
32405065
III B/S 1610 FIII B/S 1611 FIII B/S 1612 FIII B/S 1613 F
80100125150
III B/S 1614 FIII B/S 1615 FIII B/S 1616 FIII B/S 1617 F
200 III B/S 1618 F
Kvs-values m3/hnominal diameter
DNpressure range bar
0 - 4 0 - 1632405065
1111
1111
1111
1111
80100125150
2346
1123
84140
4684
200 230 140
Mankenberg GmbH Spenglerstrae 99 D-23556 Lbeck Tel. +49-451-8 79 75 0 Fax +49-451-8 79 75 99 [email protected] www.mankenberg.de
WIR REGELN DAS SCHONFIRMLY IN CONTROL
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.200
6
B
C
D
F
G
E
F
G
A
SR 5
SR 6
Level Control Valve NV 36SFOverflow Protection for flammable liquidsup to 80 C
ABC
A filling tube with flame protection and overflow protection
B outlet pipe with flame protectionC inspection tube
MaterialsBodyDouble Seat and Cone
cast steelCrNiMo-steel
SpindleValve SealFloat
brassFPMCrNiMo-steel
Dimensions [mm]
sizepress. range
barnominal diameter DN32 40 50 65 80 100 125 150 200
ABCD
0 - 4180180
0 - 16 60420
200180
230180
60420
60420
290235
310255
65455
75525
350275
400300
90630
95700
480360
600395
110784
140980
E 0 - 40 - 16
185210
175200
160185
125150
110130
80130
8515
6530
15110
Float Dimensions [mm]
sizepress. range
barnominal diameter DN32 40 50 65 80 100 125 150 200
F
G
0 - 40 - 16
350550
0 - 40 - 16
280300
350550
350550
280300
280300
350550
450550
280300
275300
450570
500500
275330
300300
570570
570570
330330
330330
UFloat Typepressure range
barnominal diameter DN32 40 50 65 80 100 125 150 200
0 - 40 - 16
SR 5SR 5 SR 6
Weights [kg] including floatnominal diameter DN
32 40 50 65 80 100 125 150 20018 20 26 40 50 62 87 137 215
Special designs on request.The pressure has always been indicated as overpressure.Mankenberg reserves the right, to alter or improve the designs or specifi-cations of the products described herein without notice.
Mankenberg GmbH Spenglerstrae 99 D-23556 Lbeck Tel. +49-451-8 79 75 0 Fax +49-451-8 79 75 99 [email protected] www.mankenberg.de
WIR REGELN DAS SCHONFIRMLY IN CONTROL
Level Control Valves NV 80, 82
DescriptionPneumatic shutoff valves are independent stop valves for water in-stallations fitted with accumulators. These valves prevent air esca-ping from accumulators into the pipe network once a pump has fai-led owing to lack of water, power cut, pipe blockage etc. In thisway dangerous water hammer in the pipe network and loss ofcompressed air is prevented.
The accumulator must be installed in a pipe spur. As long as theaccumulator is filled with water up to the level of the lower connec-ting spigot, the float of the pneumatic shutoff valve keeps the valveopen in both directions if there is a flow of water. As soon as airpasses from the accumulator into the pneumatic shutoff valve thelatter closes tightly preventing air entering the pipe network. Whenthe pump starts delivering the pneumatic shutoff valve automati-cally opens again and allows water to flow into the accumulator.When the water level is rising the pneumatic shutoff valve willopen only if the pressure inside and downstream of the valve isapproximately zero. The water flow velocity in the valve must notexceed 1.5 m/s (1 m/s for valve size DN 200).
NV 80 is a pneumatic shutoff valve of angled design, whereas NV82 is a straight valve. The valve body is of welded steel construc-tion; the float is precisely guided in two bushes; the valve cone isfitted with a soft seal.
OPTIONS Stainless steel construction all components stainless steel Rubber or plastic coating for corrosive media Various seal materials suitable for your medium
Operating instructions, Know How and Safety instructions must beobserved.The pressure has always been indicated as overpressure.We reserve the right to alter technical specifications without notice.
She
et n
o. N
V 8
0/2.
1.06
1.1
- iss
ue 1
2.06
.200
6
Technical DataConnection DN 15 - 200
DN 250 - 400 on requestNominal PressureOperating PressureFlow Rate
PN 16bis 8 bar1 - 115 m3/h
Compressed Air Shutoff Valve for pipelines, straight and angled versionsup to 80 C
Q = max. [m3/h]nominal diameter DN
15 20, 25 32, 40 50 651 3 7 11 18
Q = max. [m3/h]nominal diameter DN
80 100 125 150 20027 42 68 100 115
NV 80
NV 82
Mankenberg GmbH Spenglerstrae 99 D-23556 Lbeck Tel. +49-451-8 79 75 0 Fax +49-451-8 79 75 99 [email protected] www.mankenberg.de
WIR REGELN DAS SCHONFIRMLY IN CONTROL
She
et n
o. N
V 8
0/3.
1.06
1.1
- iss
ue 1
2.06
.200
6
Dimensions [mm] NV 80, NV 82 PN 10
size nominal diameter DN
15 20 25 32 40 50 65 80A1A2BD
300320
300320
60285
65285
300320
360355
75285
85285
370360
390360
100285
120285
500460
540475
130340
165340
Dimensions [mm] NV 80, NV 82 PN 10
size nominal diameter DN
100 125 150 200 250 300 350 400A1A2CD
680580
720580
205395
245395
875700
12501100
285445
310445
on request
Weights [kg] NV 80, NV 82 nominal diameter DN
100 125 150 200 250 300 350 400PN 10PN 16
103106
108112
137148
153164
on request
Weights [kg] NV 80, NV 82 nominal diameter DN
15 20 25 32 40 50 65 80PN 10PN 16
2626
26.526.5
2727
29.529.5
3030
3131
5657
5859
Dimensions [mm] NV 80, NV 82 PN 16
size nominal diameter DN
15 20 25 32 40 50 65 80A1A2BD
300320
300320
60285
65285
300320
360355
75285
85285
370360
390360
100285
120285
500460
540475
130340
165340
Dimensions [mm] NV 80, NV 82 PN 16
size nominal diameter DN
100 125 150 200 250 300 350 400A1A2BD
680580
720580
205405
245405
875700
900800
285460
310460
on request
D
A1
MaterialsTemperatureBody
80 Csteel optional CrNiMo-steel
Body SealInternalsFloatValve Seal
Nova UniversalCr-steel optional CrNi-steel or CrNiMo-steelCrNi-steel optional CrNiMo-steelNBR
NV 82
A2
D
BNV 80
Level Control Valve NV 80, 82Compressed Air Shutoff Valve for pipelines, straight and angled versionsup to 80 C
Special designs on request.The pressure has always been indicated as overpressure.Mankenberg reserves the right, to alter or improve the designs or specifi-cations of the products described herein without notice.
Floats SR 3, 4, 7, 8S
heet
no.
SR
3/3
.1.0
61.1
- Is
sue
12.0
6.20
06
Floats made of 316LSR 3 and SR 4 for pressure-vessels, SR 7 and SR 8 for depressurised vessels
SR 3 with fork SR 4 with internal tube
SR 7 with fork SR 8 with internal tube
Buoyancy SR 3 and SR 4 [kg] in cold water600.06
700.08
800.14
900.22
1000.30
1100.42
1200.595
1300.69
1501.14
Dimensions SR 3 and SR 4 [mm]diameterthikness
mmmm
600.5
700.8
800.8
900.8
1000.8
1100.8
1200.8
1301
1501
pressure K 120 Csocketinternal tube filling screw
barG
341/8
mmG
--
521/8
421/8
--
--
321/8
301/8
--
--
261/8
241/8
121/4
121/4
311/8
241/8
121/4
121/4
Weight SR 3 and SR 4 [kg]600.67
701.23
801.53
901.88
1002.37
1102.94
1203.87
1305.35
1508.14
Displacement SR 3 and SR 4 [dm3]600.06
700.08
800.14
900.22
1000.30
1100.42
1200.595
1300.69
1501.14
Dimensions SR 3 and SR 4 [mm]diameterthikness
mmmm
1601
1801.5
2001.5
2201.5
2501.5
2801.5
3201.5
3801.5
4601.5
pressure K 120 Csocketinternal tube filling screw
barG
211/4
mmG
163/8
331/4
301/4
163/8
163/8
263/8
243/8
163/8
163/8
213/8
163/4
163/8
203/4
133/4
73/4
203/4
203/4
Buoyancy SR 3 and SR 4 [kg] in cold water1601.47
1801.79
2002.66
2203.70
2505.81
2808.55
32013.29
38023.38
46042.81
Weight SR 3 and SR 4 [kg]1600.67
1801.26
2001.53
2201.88
2502.37
2802.94
3203.87
3805.35
4608.14
Displacement SR 3 and SR 4 [dm3]1602.14
1803.05
2004.19
2205.58
2508.18
28011.19
32017.16
38028.73
46050.95
Dimensions SR 7 and SR 8 [mm]diameterheight
mmmm
200200
240240
280280
305305
340340
buoyancy *displacementweightinternal tube
kgdm3
4.25.5
kgmm
1.316
77.29.5
11.815
2.316
3.216
15.619.4
21.726.3
3.820
4.620
filling screw G 3/8 3/8 3/8 3/8 3/4
Dimensions SR 7 and SR 8 [mm]diameterheight
mmmm
380380
420420
460460
500500
600600
buoyancy *displacementweightinternal tube
kgdm3
31.237
kgmm
5.820
42.149
55.165
6.920
9.920
71.283
130147
11.824
1724
filling screw G 3/4 3/4 3/4 3/4 3/4
Mankenberg GmbH Spenglerstrae 99 D-23556 Lbeck Tel. +49-451-8 79 75 0 Fax +49-451-8 79 75 99 [email protected] www.mankenberg.de
WIR REGELN DAS SCHONFIRMLY IN CONTROLWIR REGELN DAS SCHON
Special designs on request.The pressure has always been indicated as overpressure.Mankenberg reserves the right, to alter or improve the designs orspecifications of the products described herein without notice.
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Approvals & Certificates