Compression end suits 15mm pipe, the male end is the same size as 15mm pipe (to go into another fitting). These radiator elbow adaptors will fit into any 15mm radiator valve and adapt you to 15mm pushfit fitting the other end.

Chrome Plumbing Fittings - Stevenson Plumbing Chrome Plumbing Fittings - Stevenson Plumbing

Ideal for pipework coming from the wall when radiator inlet is vertical up into the bottom of the radiator/ towel rail. The advantage of a street elbow is that it can be connected directly to another fitting without having to use an additional short piece of pipe. This chrome wall plate elbow, suits 15mm copper or plastic pipe, 1/2 inch BSP female threaded connection for outside tap. The table below shows the minimum quantities required to benefit from this discount offer, and how much they'll cost.