Will a ½-Inch BSP T-Piece Fit My Towel Radiator?
Quick answer
A ½-inch BSP marking is the starting point. Match the internal and external threads, check how the joint seals and confirm that the heating element can enter the radiator in its approved position.
Match each connection separately
Check the rail port, the element connection and the valve connection against the exact T-piece drawing. A thread with the same nominal size can still be unsuitable if the mating part has a different thread form or sealing face. Use the component specifications when checking BSP sizes.
Check the sealing face
Both our matt black and polished chrome T-pieces come with an O-ring. Check where the ring seats and what the other joints require. An O-ring needs a suitable mating face, and the radiator, valve and element may have different sealing requirements. Follow the component instructions for each joint.
Check the element through the assembly
Confirm the permitted element length, wattage and position for the exact rail. Allow for the thickness of the T-piece and check the element’s path beyond it. If the element stops before seating, ask the supplier or installer to verify the fit.
See the dual-fuel T-piece buying guide for the other fit checks and both finishes.