High integrity gate valves for London ring main

The London Water Ring Main ensures that drinking water is maintained and distributed around London. Along the length of the main are strategically placed ‘pump out’ shafts and stored water shafts where water is pumped directly into the local distribution systems. At these shafts High Integrity Gate Valves (HIGV) are located within the main. During the late 1980s and early 1990s Hayward Tyler manufactured and delivered a total of 38-off 1,800mm High Integrity Gate Valves to Thames Water Utilities Ltd (TWUL) sites for the 80km long ring main, of which 31 were installed and one was stored as a spare. In 2006 some new HIGVs were needed for an extension to the existing ring main – Brixton Water Treatment Works to Honor Oak Reservoir and a new pump out shaft at Hampton Water Treatment Works. Those valves were manufactured to the same specifications as the originals, as required by TWUL. Negotiations with the two successful contractors, Black & Veatch (Hampton) and Morgan Est (Brixton/Honor Oak) lead to the refurbishment of the original spare valve and the supply of four new valves. The refurbished valve was delivered to site in March 2009 with the first ‘new build’ valve being delivered in May 2009. The remaining valves were dispatched in Autumn 2009. Peter Gilman, Project Engineer, Hayward Tyler Services commented: “Working in the Hayward Tyler Heritage Product Team, we are able to react quickly to customer requirements. We can supply like-for-like replacement equipment and spare parts for Hayward Tyler products spanning more than sixty-five years. Our success in securing these contracts demonstrates our continued commitment to customers both here in the UK and worldwide.”