... , high quality, good looking, long service It is double female thread plastic ball valve, available size: 20mm, 25mm, 32mm.“Seher ... can reach 95 Celcius degree under the regulated pressure,.3, Anticorrosion and no fouling: avoid fouling or rust ... and reliable: use fusing welding no need to thread rolling, it can finish a joint in just ... used in 50 years or longer. double female thread plastic ball valve