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Overflow and pressure control valves

Rueckruf EN

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These overflow and pressure control valves with proportional opening and closing characteristic are particularly suitable for test rigs, pump circuits or as pressure control or pressure relief valves. They are usually used to protect an existing pump in a closed-circuit from overloading and overheating.

The medium can then circulate through the bypass system of the pump or through the piping network.

Quickfinder certificates
Here you can find our series and their corresponding certificates in a practical overview.

Series 417: Overflow/ pressure control valve externally adjustable

Series 417

MaterialTemperaturePressureMediumConnection
- 60°C to + 225°C
(depending on version)
0,2 - 20 bar  Threaded:
3/8" - 2"
DN 10 - DN 50
Series 418: Overflow/ pressure control valve with threaded connections

Series 418

MaterialTemperaturePressureMediumConnection
- 60°C to + 225°C
(depending on version)
0,2 - 30 bar  Threaded:
3/8" - 1 1/4"
DN 10 - DN 32
Series 617: Overflow/ pressure control valve angle-type

Series 617

MaterialTemperaturePressureMediumConnection
- 60°C to + 225°C
(depending on version)
0,5 - 20 bar  Threaded:
3/8" - 2"

Series 618: Overflow/ pressure control valve made of gunmetal

Series 618

MaterialTemperaturePressureMediumConnection
- 60°C to + 225°C
(depending on version)
0,2 - 20 bar  Threaded:
3/8" - 2"
Series 453: Overflow/ pressure control valve for complex applications

Series 453

MaterialTemperaturePressureMediumConnection
- 60°C to + 225°C
(depending on version)
0,5 - 25 bar  Threaded:
1/2" - 2"
Series 853: Pressure control valves for the shipbuilding industry

Series 853

MaterialTemperaturePressureMediumConnection
- 60°C to + 225°C
(depending on version)
0,5 - 25 bar  Threaded:
1/2" - 2"
Series 608: Bypass valve as pump protection

Series 608

MaterialTemperaturePressureMediumConnection
- 60°C to + 225°C
(depending on version)
0,2 - 20 bar  Threaded:
3/8"
Series 430: diaphragm-controlled overflow valve

Series 430

MaterialTemperaturePressureMediumConnection
- 10°C to + 95°C0,5 - 10 bar  Threaded:
1/2" - 2"
Series 431: service friendly overflow/ pressure control valve

Series 431

MaterialTemperaturePressureMediumConnection
- 10°C to + 95°C0,5 - 10 bar  Flange:
DN 15 to DN 80
Series 630: Overflow/ pressure control valve in straightway form

Series 630

MaterialTemperaturePressureMediumConnection
- 10°C to + 95°C0,5 - 10 bar  Threaded:
1/2" - 2"
Series 631: Overflow/ pressure control valve with flange connections

Series 631

MaterialTemperaturePressureMediumConnection
- 10°C to + 95°C0,5 - 10 bar  Flange:
DN 15 to DN 100