Our Main Product Ranges

We are the world’s largest manufacturer of water control valve components. 

WASTOP® INLINE CHECK VALVE

WASTOP® FLANGE SERIES

WAFLAP SERIES

More Than 60,000 Professional Installations Worldwide Since 1989

We deliver high-performance water-flow control products engineered for long-term reliability. Drawing on decades of industry expertise, we’ve developed a range that combines exceptional strength with low-maintenance operation – giving contractors and resellers a solution they can trust on every project.

Excellent ⭐⭐⭐⭐⭐ 4.9 based on 100+ reviews

Your Experts in Valve and Flow Control Solutions

Kristinehamn Municipality’s Water & Wastewater department had installed  several WaStop inline check valves previously on other problem sites, both in sanitary sewer and stormwater networks. They’ve found WaStop to be easy to install, reliable, and a high quality product.

FAQ

We have collected frequently asked questions and answers here.

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Why Choose Us?

NordSeal is the authorised UK & Ireland distributor and an accredited installer of Wapro water flow control valves. We don't just supply the products — we can install them for you too, from single WaStop® units to complete penstock and flap-valve schemes.

As an accredited installer we can also arrange warranty extensions and tailored maintenance schedules, giving contractors, local authorities and homeowners complete peace of mind. Talk to our team about supply & installation for your next project.

UK & Ireland Delivery

Shipped direct from our manufacturing partner, typically 5–10 working days.

30-Day Returns

Arrange a return via our chat widget within 30 days of delivery.

Trusted Quality

Professional-grade products built to last.

Expert Support

Technical guidance from our team, Monday–Friday 8am–5pm.