Protection Ensures that no hot water enters the cold water supply.
The Non-Return and Isolating Valve (NRI) provides two functions; an isolating and a non-return function. The jumper valve provides a non-return function if the upstream pressure is greater than the supply pressure, and the isolating function is used when servicing the water heater.
5 Year replacement warranty from date of manufacture. View warranty terms and conditions here.
Protection Ensures that no hot water enters the cold water supply.