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Modulate Action

Type 431 / 433

Safety valves from the Modulate Action product group feature a standard or proportional opening characteristic.  They minimize medium loss when opening and are used for protection from pressure peaks, thermal relief, and liquids.

Approvals

Industries

  • Chemical Industry
  • Petrochemical Industry
  • Technical Gases
  • Pharmaceutical Industry
Product info Metric unit US unit

Key feature

Medium capacities with a large proportional opening range

Medium capacities with a large proportional opening range

Nominal diameter inlet

DN 15  -  DN 150 1/2"  -  6"

Nominal diameter outlet

Pressure

Actual orifice diameter d0

12  -  92 mm 0,47  -  3,62 in

Actual orifice area A0

113  -  6.648 mm² 0,175  -  10,3 in²

Pressure

0,2  -  40 bar 2,9  -  580,15 psig

Flange rating inlet

PN 16  -  PN 40 CL150  -  CL300

Temperature acc. to DIN EN

-270  to  450 °C -454  to  842 °F

Temperature acc. to ASME

Body material

0.6025, 0.7043, 1.0619, 1.4408

Cast iron, Ductile Gr. 60-40-18, SA 216 WCB, SA 351 CF8M

KUB-Materials

Valve connection

Flange acc. to DIN EN 1092 or ASME B16.5

Flange acc. to DIN EN 1092 or ASME B16.5

Bellows

Stainless steel and elastomer

Stainless steel and elastomer

Type of loading

Spring loaded

Spring loaded

Approvals

PED/ DIN EN ISO 4126-1, PED/ AD 2000-Merkblatt A2, AQSIQ,
EAC

PED/ DIN EN ISO 4126-1, PED/ AD 2000-Merkblatt A2, AQSIQ,
EAC

Specials

Units converted; No approvals acc. to ASME

Units converted; No approvals acc. to ASME

Feature Option Code Schematic drawing
Disc

metal sealing, with detachable lifting aid

J26

metal sealing, bull-race

J24

metal sealing, 1.4404

L44

metal sealing, 1.4404 stellited

J25

with soft sealing O-ring CR „K” 

J21

with soft sealing O-ring EPDM „D”

J22

with soft sealing O-ring FKM „L”

J23

with soft sealing O-ring FFKM „C” 

J20

with soft sealing plate SP „T” 

J49

with soft sealing plate PCTFE „G” 

J48

with soft sealing platePTFE „A” 

J44

Seat/nozzle

Stellited sealing surface / seat

L61

Bellows

Balanced bellows with closed bonnet

J78

Balanced bellows with open bonnet

J68

Balanced bellows for low set pressures with closed bonnet

J78J63

Balanced bellows for low set pressures with open bonnet

J68J63

Special materials INCONEL
Special materials Hastelloy

J78S15 + Werkstoffbez.

Elastomer bellows EPDM

J79

Elastomer bellows NBR

J87

Caps and levers

Screwed cap H2

Screwed plain lever H3

Screwed packed lever H4

Spring

heat resistant

X01

corrosive resistant 1.4310

X04

  • Spring
Test gag

for Cap H2

J70

for  lifting device H4

J69

Bonnet

closed

see Art.No.

open

see Art.No.

Heating jacket

-

Lift indicator

for lifting device H4

J39J93

Lift stopper

ring

J51

actuate screw H2

J52

actuate screw H4

J50

Drain hole

G1/4

J18

G1/2

J19

  • Drain hole
O-ring-damper

O-ring damper H2

J65

O-ring damper H4

J66

Connections outlet    
Free of oil and grease

J85

KUB bursting disc

-

 
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