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BIRKETT WB200 Conventional Liquid Type Safety Relief Valve
A full lift, full nozzle, conventional valve with dimensions to API526, the W200 is designed to safely relieve excess pressure in pumps, pipework, tanks, calorifiers, gas and oil separators and other process vessels. It is suitable for liquid applications. All design options and the various effects of system conditions and back pressure have been verified on Birkett’s extensive in-house mass flow test facility. Continuous design improvements have created smaller and lighter valves to support current industry design trends, especially space and weight savings. Valves can be modified from type to type simply by changing only a few parts, and precise engineering has reduced the number of parts, making maintenance easier and more cost effectiveRead More
BIRKETT WB200 Conventional Liquid Type Safety Relief Valve
The WB200 Conventional valves can be used on systems where the discharge is relatively simple. The pressure in the discharge system can be atmospheric, at a constant level or to a maximum of 10% of the set pressure.
Valves operating on liquid service require a modified valve design to cope with the differing dynamics of liquid flow. A contoured plug disc is used to minimise initial flow rate, eliminating any potential inlet pressure drops due to excessive valve lift. The valve will simmer until sufficient pressure is available to generate lift: once this has occurred, the lift will stabilise to suit the flow and pressure conditions required, thus avoiding the problem of chatter. ‘Chatter’ is the rapid opening and closing of the valve which can have a damaging effect on the disc and nozzle, causing it to leak.
A selection of accessories is available to suit system requirements. These include:
- Screwed Cap
- Bolted Cap
- Open Lever
- Packed Lever
- Test Gag
- Ferrule (government ring)
- Soft Seat
- Steam Jacket
- Auxiliary back-up piston
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