Description
The Fernco Non-Return Valve with Rat Stop is a reliable, easy-fit solution designed to prevent backflow, blockages and rodent ingress in drainage and sewer systems. Combining a high-performance one-way flap with an integrated rat barrier, it provides robust protection for both residential and commercial pipework.
Key Features
One-Way Non-Return Flap
Allows wastewater to flow out while preventing reverse flow during heavy rainfall, blockages or sewer surges.
Built-In Rat Stop Mechanism
Features a durable stainless-steel barrier that keeps rats and other rodents from entering through the drainage system.
Flexible, EPDM-Based Design
Made from tough EPDM rubber with stainless-steel clamps, ensuring a secure, watertight fit and long-lasting performance.
Quick & Simple Installation
Pushes into the pipe and tightens with clamps — no excavation, adhesives or specialist tools needed. Perfect for retrofit installations.
Universal Compatibility
Suitable for most standard drainage and sewer pipes, including clay, PVC, cast iron and concrete.
Ideal For
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Domestic drainage and sewer protection
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Properties prone to rodent ingress
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Flood-prone or backflow-risk areas
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Commercial buildings, kitchens and food facilities
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Preventing contamination and foul odours
Benefits
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Prevents costly backflow damage
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Stops rats entering through pipework
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Minimal maintenance required
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Easy, fast installation
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Trusted Fernco quality and reliability
