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Gresswell Valves has an international reputation for excellence since its introduction over 40 years ago and a commitment to continuous research and product development.



Gresswell Valves, established in Birmingham in the early 1930’s, was acquired by Wrekin Shell Mouldings in 2002 and has a consistent high profile presence in the safety relief valve industry.


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, e.g. boiler systems, pumps, process, shipping, oil and gas industries and enclosed pressurised systems.


In 2010 Gresswell Valves acquired, Empire Engineering, which complements its current product range with a wider range of safety relief valve types, sizes & pressure ranges.


Gresswell Valves is an ISO 9001 accredited company with its full range having CAT IV P.E.D. certification & CE marking.


Gresswell Valves ISO 9001


Gresswell Valves is approved to ISO 9001:2015.


Gresswell ISO 9001 ISO 9001 Certificate

Quality Policy


Quality Policy Quality Policy