CLA-VAL 50-01 : Pressure Relief / Pressure Sustaining Valve

CLA-VAL Models 50GE-01 and NGE50-01 Pressure sustaining/Surge Relief valves are hydraulically operated, pilot-controlled, modulating valves designed to maintain constant upstream (inlet) pressure within close limits. This valve can be used for pressure relief, sustaining, back pressure, or unloading functions in a by-pass system. In operation, the valve is actuated by line pressure through a pilot control system, opening fast to maintain steady line pressure but closing gradually to prevent surges. Operation is completely automatic and pressure settings may be easily changed.

+Pressure gauges (0-8 bar & 0-16 bar)

+Pressure transmitters

+Stem position indicator

+Stem position transmitter

+Stem limit switch assembly

+ Remote pressure set-point - [Series PCM50-01]

+ Non return - [Series 51-01]

+ Solenoid shut-off - [Series 58-01]

+ Float over-ride - [Series 50-CF9]

+ Surge anticipation - [Series 52-03]

+ Many more combinations - speak to a member of the CLA-VAL Team

What information is needed to size a Pressure Relief/Sustaining Valve

Maximum Flow, Upstream (inlet) Pressure, Downstream (Outlet/back) Pressure.

What does the “NGE” designation mean in the catalogue number (for example: Model NGE50-01 versus 50GE-01)

The ‘50GE-01’ is a full port valve and ‘NGE50-01’ is a reduced ported valve. The ‘NGE’ has a high resistance to cavitation and is the most common valve type. ‘GE’ valves are suited to applications with lower pressure differentials and high flows.

How many straight pipe diameters are required either side of the valve.

The guideline is 5 pipe diameters each side, but can be less depending on valve function.


Marketing Sheet

Technical Sheet

REVIT File - 50GE-01

REVIT file - NGE50-01