... raw material, high quality, good looking, long service double union copper ball valve, available size: 20mm, 25mm, 32mm“Seher” PP-R pipe ... ’s, effective in heat preservation and energy conservation of hot water pipe.5, Light, high pressure resistance: the weight is just ... needs to connect with the metal pipe and water equipment, you can use copper insert fittings.8, Long service life: the pipe ...