Manual Valves Radiator Valves UK’s range of manual valves offered in straight, angled and corner variants. Also available in round, square and crosshead valves. Supplied in pairs throughout. Dual Fuel Valves A huge leap in both design and shape being able to offer our Manual and TRV Dual fuel valves convert existing central heating towel radiators to dual fuel, without modifying pipe work and pipe centres. Browse More From This Collection Manual Valves Modern TRV and Lockshield Sets Ornate TRV and Lockshield Sets Corner Valves Angled Valves Straight Valves Manual Dual Fuel Valves TRV Dual Fuel Valves T-Pieces Air Vent & Plug Sets 18mm Pipe Sleeves Element Shroud Cover Sets Round Valves Square Valves Standard and Digital Elements Traditional Radiators