L Type Instrument DBB Valve

Oliver Valves Ltd

Price not listed

Machined from bar, our ‘L’ Type Double Block and Bleed Valves feature two inline ball pattern primary and secondary isolating valves and a ball valve vent. Machined from bar, our ‘L’ Type Double Block and Bleed Valves feature two inline ball pattern primary and secondary isolating valves and a ball valve vent. Our Double Block and Bleed Valves are the superior market leader with a range of different operating temperatures and configurations.The Double Block and Bleed valves provide Soft seating, with 10mm, 14mm, or 20mm bore isolation valves for many applications without having to resort to tr

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.