... 4. Short leadtime PVC ball valves: With Socket and Thread End.Widely used for irrigation,construction,water treatment, ... over 5MPa).3) Hot welding connection adopted, making pipes and fittings into whole, leakage effectively prevented.4) Excellent heat insulation ... hidden.9) Wonderful ability in chemical corrosion resistance10) Easy and fast installation, making cost minimized11) Over 50 years of ...