Newton 22mm | Traditional Straight Manual Valve | Chrome | Carron

We recommend all TRV's are installed on the flow, rather than the return pipework of a radiator. When used in conjunction with a system automatic bypass valve, this thermostatic valve can be installed on either the flow or return in any orientation. System automatic bypass valves are a specific building regulation requirement for all new installations and boiler upgrades. All bi-directional TRV's from any manufacturer require the bypass valve to function correctly and thus avoid radiator hammer.

Check out our blog detailing the different types of radiator valve fittings and find out which one is best for your pipes: https://www.foundrycastiron.co.uk/post/valve-guide-fittings