British Valve Manufacturers, Gresswell Valves are Manufacturers of Safety Relief Valves, Pressure Relief Valves in iron, Bronze, Brass and Stainless Steel.


Gresswell Valves has emerged as a market leader & has a worldwide distributor base with the manufacture & supply of its bronze & stainless steel safety relief valves. These valves are supplied for various specifications to provide safety from potentially lethal over pressure


Suitable for boiler systems, pumps, process, shipping, oil and gas industries and enclosed pressurised systems all Gresswell Valves safety valve range have CAT IV P.E.D. certification & CE marking.



FIG400 Anti-vacuum valves

Relieve unwanted vacuum conditions in storage tanks & cylinders and prevent collapse due to internal vacuum.



G36 Stainless Steel Safety Relief Valves

Particularly suitable for most liquid applications where a ‘small’ discharge often prevents the safe pressure in a system being exceeded.

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S2000 Bronze full lift safety relief valves.

These valves are used to prevent excess pressure build up in systems providing maximum flow rates. Suitable for use on steam, liquids and gases.