The Fernco Non-Return Valves provide efficient wastewater management by allowing sewer or surface water to flow freely towards drainage systems while blocking any backflow, effectively managing flooding.

Excellent for retrofitting, these valves can be pushed directly into existing manholes, preventing property flood via toilets, plug holes and waste pipes when sewer systems are blocked. The creative design of these valves also functions as an effective pest control barrier, doubling as a rat blocker and flood control device. Their dual function makes them both a cost-effective and essential addition to your home, setting new standards in sewerage and drainage systems.

• Size: 3.94 inch (100mm), compatible with existing manholes
• Administration of sewage or surface water flow
• Prevents backflow from flooding properties
• Can be installed within existing pipe inlet
• Prevents foul water from re-entering property
• Ideal for flood control scenarios
• Doubles as a pest control device, blocking rats
• Easy retrofit installation into drainage systems