UK: Butterfly and Needle Valves

erhard valves
erhard valves
erhard valve
erhard valve
map west east link main pipeline liverpool manchester
map west east link main pipeline liverpool manchester

Client : United Utilities

Location : North Wales

Project fact file
  • Total Length 54km
  • Over £500k of Erhard Valves
  • Immediate transfer of potable water
Products supplied
  • 1 x DN700 Needle Valve
  • 1 x DN300 Needle Valve
  • 19 x DN1200 Butterfly Valves
  • 6 x DN1000 Butterfly Valves
  • 7 x DN800 Butterfly Valves
  • 2 x DN800 Butterfly Valves
  • 1 x DN500 Butterfly Valves
  • 1 x DN300 Butterfly Valves


The cities of Liverpool and Manchester receive their main water sources from the Dee and Vynwy aquaducts in North Wales and the Haweswater and Thirlmere aquaducts in the Lake District respectively. To enable potable water to be transferred between these two cities the ‘West East Link Main’ was recently constructed allowing water to be transferred from Manchester under gravity and pumped in the reverse direction. For this project we have previously supplied over £500k of Erhard Valves.

At the end of the gravity main a bypass main is to be constructed and a DN700 Erhard Needle Valve controls the flow of water into the North Liverpool Truck Mains.