The Drayton RT414 thermostatic radiator valves provide control of individual room temperatures. With integral thermostatic sensing head and reverse flow capability, the 15mm angle valve can be flow or return mounted, vertically or horizontally. Radiator flow rate can be balanced from the TRV. Double gland seal Range limiting feature Reverse flow Allows simple draining of system Sensitive liquid-filled sensor Non-stick internals White wheelhead caps available (part no. 07 35 123) – converts valve body into balancing/isolating valve to replace lockshield Adaptors available for plastic (PEX) and multi-layer pipe