ball valve/pvc ball valve Meterial:PVC Size:1/2,3/4,1,1-1/2,2,2-1/2,3,4 Color:White,Gray AdvantagesTightness test Test the water station The joints shall not leakLight weight, easy to load and unloadGood chemicals and drugs resistanceSmall resistance to fluidity,The fluid resistance is small .Strong mechanical strength,Applicable to the regular open and close .Good electrical insulationWater ...