Subsea Relief Valves

Oliver Valves Ltd

Price not listed

The Oliver Valvetek, Subsea Relief Valves, have a cracking pressure of 10 psi to 20 psi and a reverse sealing pressure Test (hyperbaric) of up to 5,000psi. Our relief valves are widely regarded as an industry standard when it comes to protecting hydraulically actuated gate valves in the unlikely event of a primary and secondary stem seal being compromised. Oliver Valvetek’s Subsea Relief Valves are widely used on hydraulically actuated gate valves to prevent leakage from gland seals entering actuators. The fail close sprung poppet arrangements have been designed and flow tested to prevent pres

Oliver Valves Ltd's own words, read from their page.

Buy from Oliver Valves LtdPrice seen 2026-09-04. Affiliate link.

Where this comes from

The part other shops don't tell you. Three separate questions, kept separate on purpose, each with its source.

UK company
Registered at Companies House as OLIVER VALVES LIMITED, number 01421817. Checked 2026-08-29.
Means the business is a British legal entity, not a British-sounding name owned elsewhere. It says nothing about where anything is made.
UK operations
Stated by the company: "From our origins in Knutsford, Cheshire, to our presence across the globe, we continue to design, test, and manufacture our products in Britain" Source.
Means people employed here, or premises they actually work from. We keep this separate from the company badge because a registered office can be an accountant's spare room, and a company can be registered in Britain while everything it does happens somewhere else. Where we have not looked, we say so rather than assuming.
British-owned
Not established. Many companies file a statement rather than naming a controlling shareholder.
Read from the register of people with significant control, following the chain of holding companies. It does not gate anything: a firm can be made here and owned elsewhere, and that is worth telling you rather than hiding.
Where it is made
The maker doesn't say, so neither do we.
This is about the individual product, not the company. A British firm can sell things made abroad, which is normal and not a criticism. We would rather tell you which is which than average them into a score.