John Guest Underfloor Manifold Isolation Valve is a replacement valve for that thermostatically opens the return port for the associated manifold circuit when in use and closes when shutting down. Installed on the return bar of the manifold, the valve opens as hot water is pumped through the circuit slowly opening as the temperature rises. The valve closes automatically as the system shuts off and cools. Durable brass Suitable for John Guest Underfloor heating manifolds manufactured prior to April 2014

Designed and manufactured in the UK.

Something not quite right? You have 28 days from the day you receive it, to send something back.

Please note, we cannot offer refunds on fashion face masks, cosmetics, pierced jewellery, adult toys, and swimwear or lingerie if the hygiene seal is not in place or has been broken.

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