The Lewes UK11 Thermostatic Radiator Valve Set (TRV) | Angled | Arroll

We recommend all TRV's are installed on the flow and lock shields on the return.  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 now 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. Please consult a qualified plumber or heating engineer for more details. 

We offer FREE next day delivery on most of our accessories. It is sent by either Royal Mail or DPD which is delivered within 1-2 working days. Orders placed before 2:00pm are usually delivered the next working day. Orders to more remote locations may take a few days longer and may be sent by other couriers.

Saturday or early morning deliveries can normally be arranged, please contact us for any other delivery requirements or a quote for International Delivery.

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