The Danfoss range of radiator thermostats are BS EN 215 approved and have an adjustable bi-directional valve body allowing the valves to be installed either horizontally or vertically, without the risk of water hammer. They also incorporate a ‘positive off’ feature, frost protection, 1/2" BSP radiator tailpiece and a temperature range from 8 to 28°C. The RAS-C² white control knob sensor is mounted onto the nickel-plated valve body by means of a hand-tightened clamping ring.