90 Degree Reducer Elbow – These 15mm to 10mm Pushfit Reducer Radiator Valve Elbows in Chrome can be used with standard radiators or tower rail valves. Push Fit 90° Chrome Reducer Elbow – These fittings can be used with both straight or angled valves to change the direction of the supply pipe in the system. For Use with Wide Range of Materials – These plumbing fittings can be used with a wide range if pipe materials including copper pipe, PEX pipe, PB pipe, plastic barrier pipes. Ideal For – These are used for reducing 15mm radiator valves down to 10mm pipe connections and can be used in any 15mm compression joint. What You Get – Pack of 2 Radiator Valve Pipe Reducer 15mm to 10mm 90° Elbows., Manufacturer: Pipestation