Type test approved safety valves angle-type
for industrial applicationsSeries 420

Rueckruf EN

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Safety valves made of stainless steel, angle-type with threaded connections or cutting ring threaded connections

These angle-type safety valves are available for the first time with TÜV and European component approval. This allows the use of tested and approved quality on the smallest pressure tanks and small steam boilers with neutral and non-neutral gas and liquid mediums. The cutting ring threaded connections available as an option make this valve quick and easy to install for use in small pipelines.

  • Examples of use
  • Approvals
  • Downloads

For the protection of:

  • pressure tanks and -systems for neutral / non-neutral vapours, gases and liquids   
  • steam boilers and steam plants

Please observe plant-specific regulations and use of appropriate valve version and sealing material. 

  • chemical plants, biogas plants
  • desalination plants
  • process equipment construction and medical technology
  • shipbuilding industry and marine equipment
  • secondary areas in the food-, beverage-, pharmaceutical- and cosmetics-industries
  • offshore-applications
  • general applications with screwed pipe connections

Safety valves are set and sealed at the factory.


TÜV-Type test approval 2069
D/G , F , F/K/S*

EU type examination
S/G , L , F/K/S*

TR ZU 032/2013 - TR ZU 010/2011
D/G (S/G) , F (L) , F/K/S*



AD 2000 Data sheet A2
TRD 421
TRB 801 No. 22 and No. 23*
DIN EN ISO 4126-1
PED 2014/68/EU
KGS AA 319

*only for versions with bellows

Suitable for
Liquidsneutral and non-neutral
Air, gases and vapoursneutral and non-neutral
Stainless steel
1/4" - 3/8"
-40°C to + 260°C
(depending on version)
0,5 - 50 bar
(depending on version)
Data sheet/Capacity table