Valves and Plumbing Control Valves Combination Non-Return Isolating Valve

Combination Non-Return Isolating Valve

The Combination Non-Return Isolating Valve combines the mandatory functions of an isolating valve and non-return valve for the installation of pressurised water heaters.

The valve provides isolation and prevents the backflow of water from a water heater to the mains line. The device serves the dual purpose of protecting the mains supply from contamination and preventing the loss of water that has already been heated. The isolating valve component is useful as a means of controlling inlet water supply to unvented storage water heaters.

RMC Combination Non-Return Isolating Valve is available in 15mm and 20mm configurations.

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Size Description Catalogue Number
15mm Female BSP NI50 Duo Valve NI501
15mm Internal Flare NI50-A Duo Valve NIA501
15mm Male Compression NI50-C Duo Valve (Inc. nuts, copper and nylon olives) NIC501
15mm Female BSP NR50-S Non-Return with Strainer NRS501
15mm Female BSP NRI501-S Trio NRIS501
20mm Female BSP NI75 Duo Valve NI701
20mm Internal Flare NI75-A Duo Valve NI703