Drayton Radiator Valves

Match the valve bore to your pipework and radiator tail, 15mm is the standard size for most domestic radiators, while 10mm is common for compact towel rails and some small bathroom radiators. If you’re unsure, measure the outside diameter of the pipe that connects to the valve or check the radiator manufacturer’s spec. a freestanding living-room radiator will usually take a 15mm TRV4, whereas a bathroom towel rail will often need the RT212 10mm angled valve.

Use an angled valve where the pipe enters the radiator at 90 degrees (typically from the floor or down from the wall), and a straight valve when the pipe runs in-line with the radiator inlet from the wall. Angled TRV4 models are ideal for floor-supply pipework; a straight TRV4 suits a wall-supply installation. Pick the orientation that matches how your existing pipes meet the radiator to avoid awkward bends or adaptors.

Auto-balancing TRV4 valves are designed to create a permanently balanced system so each radiator gets its correct share of flow without repeated manual adjustments. That keeps rooms at a more even temperature, reduces boiler runtime and can lower energy use because you avoid over-heating other radiators to compensate. In practice, if you fit TRV4 auto-balancing valves across several radiators, you’ll spend less time fiddling with lockshields and more time enjoying a balanced heating system.

An integral head valve has the thermostatic sensing head built onto the valve body for a compact, tidy fit; valves supplied with a separate lockshield include the return-side balancing valve you need to set system flow. Integral-head TRVs are neat and simple to fit, but a pack that includes a lockshield (like the TRV4 with lockshield) gives you the means to balance the circuit manually if required. If you want a finished look and easy balancing, choose the TRV4 sets that include the lockshield.

Yes, the white and chrome Drayton finishes are chosen to blend with contemporary radiators and bathroom fittings; chrome works well with exposed metalwork while white complements painted or enamelled radiators. For a polished look, fit the chrome-style TRV4 on a chrome towel rail; use the white option where you want the valve to sit subtly against a white radiator. The products are UK made and tested for reliability, so the finish is durable for everyday use.