Xavax Drain hose Non return valve, with 2 clamps

Prevents water back-flow between washing machines and laundry driers,If a washing machine and a condensing or heat pump dryer are connected to a single siphon connection, the wastewater could be pumped from one machine to the other, A non-return valve in the wastewater pipe prevents this backflow, Suitable for drain hoses with an inner diameter of up to 10 mm , , Note for Consumers: , The direction of flow on the valve must be noted since if it is inserted the wrong way round the flow of water will not be stopped! , Only suitable for wastewater. 1 non-return valve,2 hose clamps