Non-return valves are designed to prevent a back flow of water. Remember to fit a non return valve to all drains and/or to sealed downpipes in affected locations. This is especially important for washing machines, dishwashers and downstairs basins and shower trays.

They should only be used when there is no alternative and on the basis that they are cleaned regularly. Our non-return valve has access to the top of the valve to facilitate cleaning.

1 ½ “ multi-fit in-line non return valve with top access for cleaning.

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