Custom Recoil Check Valves for Potable Water Station

For sites replacing obsolete valve models there are two options, costly on-site pipework amendments to facilitate a standard solution, or custom manufactured valves that are tailored to meet the dimensional and flow requirements of the site perfectly.

T-T Flow® recently completed such a job for a potable water station undergoing a complete refurbishment.

The Problem

During upgrade works at a principal water pumping station in West Yorkshire, it was found that the existing check and gate valves were beginning to fail and were beyond economic repair.

The valves needed to be replaced, but the models were obsolete, having been installed in the system several decades before. This meant that bespoke manufactured valves were required to suit the site’s existing infrastructure, as an off-the-shelf solution would require the station to undertake costly pipework amendments in order to fit.

Due to the importance of the pumping station as part of Yorkshire’s wider water management infrastructure, the valves needed to provide reliable, long-term performance to ensure a constant clean water supply to the surrounding area.

The Solution

As part of the solution, T-T Flow® worked alongside the specialist-appointed framework contractor for the job to manufacture custom check valves and wedge gate valves, engineered to satisfy the site’s non-standard face-to-face dimensional requirements.

A fast-acting recoil check valve design was chosen for its excellent slam avoidance where rapid flow reversal exists. Their off-set/eccentric design facilitates fast closure, which in turn mitigates damaging water hammer and check valve slam. This protects the station’s pipes, pumps and wider components from abrupt changes in system pressure that can send damaging shock waves through the system, leading to accelerated wear and breakdowns.

Our team supplied six DN400 recoil check valves that are rated to 16 Bar but imperially drilled to BS10 Table F. The valves are manufactured in ductile iron, coated with a robust fusion bonded epoxy and feature acid-resistant stainless-steel hinges and fasteners for corrosion resistance, ensuring trouble-free operational longevity.

All valve coatings underwent stringent independent evaluations by the Water Regulations Advisory Scheme to demonstrate compliance with safe potable water handling regulations, while precision machined weld-overlay bronze seats allow for higher flow velocities for maximum hydraulic efficiency in the station.

Custom Valve Solutions

At our HQ in Cheshire our expert designers and engineers manufacture custom valves that are perfectly suited to your site, providing fast turnarounds on tailored solutions that can installed directly without the need for any preliminary works on-site.

Speak to a member of the team today to discuss how our custom valve fabrication can benefit your site, call 01630 647200, email ttflow@ttpumps.com or complete our online enquiry form.