Single Nozzle Bodies - QJ300 Series Diaphragm Check Valve

SPRAY-TRAC SYSTEMS LIMITED

Price not listed

QJ300 Series Diaphragm Check Valve Quick TeeJet Nozzle Assemblies Low-profile design allows maximum protection against damage. Available with single and double hose shanks for 3⁄8", ½" and ¾" I.D. hose. Drip-free shutoff with TeeJet ChemSaver.Opens at 10 PSI (0.7 bar). Standard diaphragm is EPDM with Viton optional. Maximum operating pressure of 300 PSI (20 bar). Flow rate: 3.5 GPM (13.2 l/min) at 5 PSI (0.34 bar) pressure drop, 4.9 GPM (18.5 l/min) at 10 PSI (0.69 bar) pressure drop. QJ300 Series is also available in polypropylene. Maximum operating pressure is 150 PSI (10 bar).

SPRAY-TRAC SYSTEMS LIMITED's own words, read from their page.

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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 SPRAY-TRAC SYSTEMS LIMITED, number 02995039. 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
Not yet checked.
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.