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Non-Return Valve

 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.
Non-Return Valve

Visit the Fernco website for more information on Non-Return Valve

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