This CPVC union at 20mm is what you fit either side of anything that will be removed one day. Undo the nut, lift the item, refit — no hot works, no cutting. Chlorinating the PVC raises its temperature ceiling substantially. It looks similar to PVC and solvent-welds the same way, but it is doing a genuinely different job. It cements into the pipe socket with solvent. Working pressure PN 10, suitable for cold and hot duty. Hot-water and heating duty, which is what the temperature rating on this range is for.
