Black Rubber 32/40mm Non-Return Valve

We had problems with slow water drainage from pipes in bathroom, very pleased that this has sorted out the problem

THIS ITEM WAS REQUIRED TO PREVENT SYPHONING OF WATER IN UPPER LEVEL OF WATERFALL WHEN THE PUMP WAS SWITCHED OFF AND IT, INITIALLY APPEARED TO WORK BUT OVER TIME FAILED TO HOLD BACK THE SUCTION PRESENT.IT HAS NOT THEREFORE STOP THE WATER DRAINING BACK TO LOWER LEVEL.

Received before scheduled time. Exactly as expected. Not fitted yet.

great thanks