Overflow and pressure control valves

Series 431

Rueckruf EN

Request a call back

Protecting your personal data is important to us. Please read our privacy policy.


Overflow and pressure control valves made of stainless steel, straightway form with flange ­connections   

High flow rates at low differential pressures. Can be adjusted and set externally during operation, for liquid and gaseous media, service friendly due to replacement cartridge. This overflow valve made of high-alloyed stainless steel combines all of these advantages. According to the sealing- and diaphragm materials employed, these valves can be used for neutral and non-neutral media.

  • Examples of use
  • Approvals
  • Downloads

For the protection of:   

  • pumps against overloading in closed circuits for neutral / non-neutral, non-sticking liquids

For the control of:

  • systems under pressure for air, neutral / non-neutral gases and vapours
  • industrial plants
  • power plant technology
  • pump systems
  • mechanical engineering
  • secondary areas in the food-, beverage-, pharmaceutical- and cosmetics-industries


European Pressure Equipment Directive

TR ZU 032/2013 - TR ZU 010/2011

PED 2014/68/EU

Suitable for
Liquidsneutral and non-neutral
Air, gases and vapoursneutral and non-neutral
Stainless steel
DN 15 to DN 100 
- 20°C to + 120°C 
0,5 - 10 bar 
Data sheet/Capacity table