Towel Rail Radiator valves are available in an elegant polished chrome plated finish to accompany our range of designer radiators. They are manual radiator valves and are used for the simple isolation and regulation of the flow rate in a central heating system. They are supplied in pairs an isolation valve and a lockshield valve. The lockshield valves are installed on the return branch and are used for the hydraulic balancing of the circuit. Valves are available in straight, angle or corner pattern form with ½” BSP male and ½” Irish size compression connections.