Gate Valves, Brass Ball Valves, Check Valves manufacturer / supplier in China, offering Customizable 1/2 Inch - 4inch 600wog Forged Female Thread Brass Gate Valve Pn25 NPT Bsp Hpb57-3 OEM Bronze Copper Valve for HVAC/Plumbing Systems, Antiscale Water Filter with Polyphosphate & Silicate Balls by-Pass Valve for Appliance Protection, Food Grade Polyphosphate Water Filter Hard Water Filter Scale Inhibitor Salt Free Water Softener for Shower and so on.