A T-Piece enables radiators to become dual fuel meaning they can be heated by the central heating system in the winter and electrically heated with one of our electrical elements in summer when central heating is turned off. Brass construction. 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