20mm DoustStop Anti Hammer Valve (1 Pack)

The DoustStop uses the unique WaterBrake to slow the flow of water velocity, this is hardly noticeable. However it helps reduce the velocity noice and when fitted to washing machines, allows the use of another tap in the home by helping to balance the water supply. The DoustStop is designed for use after the StopCock for the reduction of water hammer, this is achieved by slowing the water and trapping the hammer in the delivery hose. Testing of the product in “actual” situations has proved the product to be very successful at reducing water hammer.