... raw material, high quality, good looking, long service It is double female thread plastic ball valve, available size: 20mm, 25mm, 32mm ... water supply project, it is more technical and economical than copper pipe, UPVC pipe, PEX-AL-PEX pipe, PEX pipe and ... with the metal pipe and water equipment, you can use copper insert fittings.8, Long service life: the pipe system can ...