Water and Rodent Non-Return Valve

The Flood Company


To assess the Water and Rodent Non-Return Valve as manufactured byThe Flood Company for use in drains serving single properties and carrying a 6 litre WC discharge. 

Product Description

The product comprises a Type 0 Anti-flooding device as per EN 13564-1:2002 (non-return valve) for use in domestic lateral drains serving a single property where a minimum 6 litre WC flush is regularly discharged through the Water and Rodent Non-Return Valve (NRV).

Manufactured in moulded polypropylene, it is designed as a retrofit device to fit into the outlet of DN100 plastic or 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. 

Full details can be found in the Assessment Schedule opposite.

Approval period

26th September 2016 - 25th September 2021

Click on certificate to enlarge

View Assessment Schedule.