For use with 110mm 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 at the property’s inspection chamber. The valves can be fitted in minutes and do not require any specialist expertise or equipment.
Our delivery charge is £25 on all orders under £250 for delivery to mainland UK only, excluding the Scottish Highlands & islands, Channel Islands, and Northern Ireland. If you require delivery to any areas not covered by this, please contact us by phone or email, as though you may be able to check out successfully, your order may incur extra charges or be cancelled. Orders over £250 qualify for free delivery (mainland UK only).