6"/150mm Buffalo Non Return Valve

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Comprises a Type 0 Anti-flooding device as per EN 13564-1:2002 (non-return valve) for use in commercial or domestic lateral drains serving multiple properties.

Designed as a retrofit device to fit into the outlet of DN150 plastic or 6� clay pipes discharging into brick or concrete chambers or to fit into preformed plastic manhole bases (in accordance with BS EN 1329-1:2000), located external to the building