TRV Head Only Replacement 3 Pack Drayton TRV4 Compatible, M30 x 1.5 Thermostatic Radiator Valve Head, White & Chrome Hulthor

3 Pack of TRV Heads Three white and chrome thermostatic radiator valve heads for replacing worn, stuck or broken heads on three radiators. Heads only: valve bodies, lockshields and adaptors are not included. M30 x 1.5 Connection Fits thermostatic radiator valve bodies with a standard M30 x 1.5 thread, including Drayton TRV4 valve bodies. Check the thread on your existing valve body before ordering. 7–28°C Control with Frost Protection Set each room between 7°C and 28°C. The head opens and closes the valve automatically to regulate hot water flow, and the frost setting helps protect pipes while the house is empty. Head-Only Swap The head fits onto the existing valve body, so replacing it does not normally require draining the heating system. Remove the old head and hand-tighten the new head onto the valve. EN 215 Tested, White and Chrome Meets EN 215 for thermostatic radiator valve heads and is tested to a maximum pressure difference of 10 bar. Same white and chrome finish as the single Hulthor TRV head.