I need to make a vertical radiator connection with a 20mm offset in a length of 150mm between fittings with 15mm tube. I think this will be too short a length for bending copper into an "s". Would plastic PEX tubing be able to accommodate this offset using compression fittings at least one end and compression or push fittings at the other. One end to the radiator valve and the other to copper tube at floor level.The radiator is a long one (96")so periodic small expansion movements (1mm) will also occur.
Any advice would be appreciated.