Overflow and pressure control valves

Series 631

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 gunmetal, straightway form, with flange ­connections

In cases where flange connections are required, this valve offers the same features as the 630 version. The robust all-metal design makes this valve ideal for harsh operating- and environmental conditions, when sensitive control is required.
The set pressure can easily be read-off the (optional) pressure gauge.    

  • 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 stations
  • mechanical engineering   


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
DN 15 to DN 100 
- 20°C to + 120°C 
0,5 - 10 bar 
Data sheet/Capacity table