Retro Fit Non Return Valve for 4" (110mm) Clay or Plastic Pipe

The WAR valve is easy to fit and operates in 110mm or 4" straight or bent clay or plastic pipe.

This valve is a universal fit product due to its unique design with a shaped stainless steel flap and is also rodent resistent

It also has an intergrated mechanism to allow it to be locked watertight.

Typically installed in the last access chamber before the sewer to prevent backflows affecting the drainage of the dwelling.

Should only be pushed into the upstream connection / inlet to the manhole, do not fit into the downstream / outlet from the chamber.

Suitable for most situations as the swing of the flap usually clears even if the channel is at 45 degrees.