The Drayton TRV4 Replacement Radiator Valve Sensor Head in White/Chrome is a high-quality and durable valve sensor head designed for multi-positional radiators. Made of brass, chrome, and plastic, this thermostat-controlled valve features a rotary knob control style and five or more heat settings. Manufactured in the United Kingdom, this sensor head is perfect for both horizontal and vertical radiator orientations, adding a sleek and modern finish to your heating system with its white and chrome colour scheme. Used but in good condition.