... good raw material, high quality, good looking, long service double union copper ball valve, available size: 20mm, 25mm, 32mm“Seher” ... supply project, it is more technical and economical than copper pipe, UPVC pipe, PEX-AL-PEX pipe, PEX ... the metal pipe and water equipment, you can use copper insert fittings.8, Long service life: the pipe system ... used in 50 years or longer. PPR copper ball valve