Straight Radiator Valves As you would imagine, straight radiator valves connect to the central heating with the radiator being straight up from the floor horizontally. Straight valves are to be used when your heating pipes are coming out of the floor, the water runs through the valve and in a straight line, as the name suggests. Keeping your bathroom warm and dry is vital, especially when the weather gets colder. To keep your bathroom radiator in top working condition, these stylish RadiLux Straight Radiator Valves are a stylish must-have for those who love a super modern bathroom. The sleek chrome finish on these valves looks great and is incredibly tough and durable and matches all contemporary bathroom styles and bathroom accessories beautifully. Whether you want to add a touch.