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Specialists in Bespoke Solutions

WRAS Approved Valves

Our offer a range of WRAS-approved valves including check valves, butterfly valves, air valves, gate valves and pressure reducing valves. Valid certificated and approval numbers can be obtained upon request.

14 Items found

15 30 60 All

14 Items found

15 30 60 All

What is a WRAS approved valve?

WRAS approved valves have been tested and certified by the Water Regulations Advisory Scheme (WRAS) to ensure they meet UK water supply regulations for use in potable water.


What does WRAS stand for?
What is WRAS testing?
What products need to be WRAS approved?
Is WRAS approval a legal requirement?
Why choose WRAS approved products?
What is the difference between clean and potable water?
What is the difference between WRAS product and WRAS material approval?
How do I know which products are WRAS approved?
What is BS 6920?

Case Studies

Custom WRAS Approved Gate Valves for Water Treatment Works

T-T's Agricultural and Environmental experts were approached by an anaerobic digestion plant whose slurry mixer was experiencing premature corroding due to the matter's unknown pH value.

The team specified a brand-new agricultural mixer with a custom Nitec coating for increased corrosion resistance.

Damped Check Valves for Hong Kong Drainage Department

The Drainage Services Department of the Hong Kong Government commissioned our experts for four DN400 bespoke swing check valves with pneumatic dampers and flow sensing switches, forming part of a £1.6 million site refurbishment.

As the only manufacturer of WRAS approved swing check valves with such a large diameter, T-T were specially qualified to meet the needs of the site.