Retrofit Non Return Valve 160mm

For use with 160mm plastic pipework, designed to prevent foul water flowing back from the blocked sewerage system to flood the property from the inside via toilets, plug holes and waste pipes. These unique and patented Retrofit Non-Return Valves can be simply pushed in to the existing pipework, whether plastic or clay, at the property’s inspection chamber. The valves can be fitted in minutes and do not require any specialist expertise or equipment.