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Critical Service

Type 546

PTFE-lined safety valves from the Critical Service product group are utilized for highly corrosive media such as chlorine, acids, and lyes. With their highly resistant lining they offer a safe solution for corrosive media.

Approvals

Industries

  • Chemical Industry (Chlorine manufacture and processing; Chemical plants and pipelines; Reduced media such as acids or lyes)
Product info Metric unit US unit

Key feature

Continuous nozzle out of PTFE, rare activation of the safety valves

Continuous nozzle out of PTFE, rare activation of the safety valves

Nominal diameter inlet

DN 25  -  DN 100 1"  -  4"

Nominal diameter outlet

Orifice

E - N E - N

Pressure

Actual orifice diameter d0

23  -  87 mm 0,91  -  3,43 in

Actual orifice area A0

416  -  5945 mm² 0,645  -  9,215 in²

Pressure

0,5  -  10 bar 7,25  -  145 psig

Flange rating inlet

PN 16 CL150

Temperature acc. to DIN EN

-85  to  200 °C -121  to  392 °F

Temperature acc. to ASME

currently no approvals acc. to ASME Sec. VIII Div. 1 currently no approvals acc. to ASME Sec. VIII Div. 1

Body material

0.7043, 1.0619

Ductile Gr. 60-40-18, SA 216 WCB

KUB-Materials

Valve connection

Flange acc. to
DIN EN 1092-1
ASME B 16.5

Flange acc. to
DIN EN 1092-1
ASME B 16.5

Bellows

Stainless steel

Stainless steel

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

aktuell keine Zulassung nach ASME Sec. VIII Div. 1

aktuell keine Zulassung nach ASME Sec. VIII Div. 1

Feature Option Code Schematic drawing
Disc

with sealing plate borofloat glass

standard

with sealing plate virgin PTFE

with sealing plate PTFE - 25 % carbon

acc. to customer specification e.g. Hastelloy®

Bellows

Balanced bellows

J78 (Standard)

Bellows with special material Hastelloy

-

  • Bellows
Caps and levers

Caps H2

Packed lever H4

Spring

heat resistant

X01

corrosive resistant 1.4310

X04

  • Spring
Test gag

for cap H2

J70

for lifting device H4

J69

Lift indicator

Lift indicator lifting device H4

J39J93

Lift stopper

Lift stopper

J51

Connections outlet    
Free of oil and grease

J85

Conductive coating    
Gas-masking    
Special materials

Hastelloy® C4/ 2.4610

Monel® 400/ 2.4360

Duplex / 1.4462

Documentation    
Balanced Piston    
   
   
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