LavaTap Drayton TRV4 TRV Radiator Thermostat Valve Head Only Chrome White Frost to Max dial, hand fitted with no tools, draining down, 80 85 mm tall, spare part, made in the UK

Head only: this is the sensing head on its own, so the valve body already fitted to your radiator pipework stays exactly where it is Fits Drayton TRV4 valve bodies: check the old head reads TRV4 before ordering, and compare it against the product photographs Frost setting through to maximum: the dial is marked with a frost symbol, then numbered settings up to 5 and Max, so a room can be set or left protected Chrome and white finish: a chrome cap and collar over a white body, the standard TRV4 look, so a single replacement still matches the rest of the house Fitted by hand: the chrome collar at the base of the old head unscrews and this one goes on in its place, with no tools and no drained system Sized before you order: 80 mm tall on frost and 85 mm at maximum, worth checking if the valve sits behind a curtain or hard against furniture