Fernco Non-Return Valve - 100mm

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Non-return valves allow sewer or surface water materials to freely flow in the direction of the systems mains but block backflow of those materials in the opposite direction in instances, such as, flooding.

Fernco’s, previously known as Flexseal range of retrofit non-return valves (NRV’s) can be installed directly into existing manholes by simply pushing the NRV into the desired pipe inlet. The product prevents foul water flowing back from the blocked sewerage systems to flood the property from the inside via toilets, plug holes and waste pipes.

The Retrofit NRV’s can be fitted in minutes and do not require any specialist expertise or equipment.

Users also benefit from protection against rodent infestation. The stainless steel reinforced flap helps to block rats and other rodents and insects from travelling up pipes and into homes and commercial buildings.

Can fully open even when there are tight bends or benching.

  • Size: 100mm
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Brand Fernco
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