Overflow and pressure control valves

Series 453

Rueckruf EN

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Overflow / pressure control valves made of stainless steel, angle-type with threaded connections
- externally adjustable by hand wheel -

These overflow or control valves have been developed for complex applications with, for example, large overflow volumes, viscose media and counter pressures etc. With the stainless steel bellows that compensate counter pressures, a counter pressure affecting the outlet side does not influence the setting of the valve. The springs, designed precisely for the setting ranges, with the complex technical design of function parts in the flow range and the housing lead to the unusually high flow volumes for overflow valves despite the very proportional control reactions.

  • 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 neutral/ non-neutral gases and vapours and - depending on the sealing material - also for steam
  • chemical plants, biogas plants
  • test rig construction
  • mechanical engineering and process equipment construction
  • shipbuilding industry and marine equipment
  • desalination plants
  • offshore applications
  • 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
Stainless steel
1/2" - 2" 
- 60°C to + 260°C
(depending on version)
0,5 - 25 bar 
Data sheet/Capacity table