The Eucotherm Central Valve Set – Straight White is purpose-built for radiators with 50 mm centre connections, channelling both flow and return through one slim H-block so only a single, traffic-white fitting sits neatly beneath the panel. Because it’s a straight model, the body lines up perfectly with pipes that rise vertically from the floor, avoiding the side projection and extra bends you get with angled valves and keeping the installation easy to dust and visually uncluttered. H-block valves like this minimise the footprint of middle-connection radiators and are quicker to fit, remove or swap than separate pairs, making them a smart choice for space-conscious, symmetrical layouts. A liquid-sensor thermostatic cartridge inside the dial lets you twist from frost-safe to setting 5 (roughly 7–30 °C); independent BEAMA testing shows modern TRVs can cut heating energy use by about 18 % over an average UK season, so you stay cosy while trimming bills. The set is formed from corrosion-resistant steel, finished in durable RAL 9016 white powder coat, uses standard 15 mm compression × ½″ BSP tails for a tool-light install, and comes with a matching lockshield plus a reassuring two-year manufacturer guarantee.