Type test approved atmospheric discharge safety valves
for industrial applicationsSeries 413

Rueckruf EN

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High performance safety valves made of stainless steel, atmospheric discharge, with threaded connection

The discharge of air from pressure vessels filled with liquid, granular or powdery media requires additional safety precautions with so-called "FKS" safety valves. This valve is fitted with a weather shroud and all moving or guided parts as well as the spring housing are protected against soiling.
This makes this valve suitable for the rough conditions on bulk transport vehicles or stationary silos.

  • Examples of use
  • Approvals
  • Downloads

For the protection of:

  • stationary pressure tanks and
  • bulk transport vehicles

for liquid, granular and dusty media. Please observe plant-specific regulations and use of appropriate valve version and sealing material.

  • stationary silos
  • bulk transport vehicle manufacturers and service companies
  • paint spray shops
  • secondary areas in the food-, pharmaceutical- and cosmetics-industries

Safety valves are set and sealed at the factory.


TÜV-Type test approval 2003
D/G , F/K/S

EC type examination
S/G , F/K/S

TSG ZF001-2006
D/G (S/G), F/K/S


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



AD 2000 Data sheet A2
TRB 801 Nr. 22 and Nr. 23
DIN EN ISO 4126-1
PED 2014/68/EU
KGS AA 319

Suitable for
Stainless steel
1/2" - 2"
- 60°C to + 225°C
(depending on version)
0,2 - 6 bar
Data sheet/Capacity table