Gate Valves, Brass Ball Valves, Check Valves manufacturer / supplier in China, offering Stainless Steel Brass Bronze Y Strainer Good Pricess304 1/2inch BSPT Thread Y Type Filter Strainer Valve for Water, Medical Oxygen Brass Gas Ball Valve Lockable Isolation Line Valve Medical Shut off Ball Valve with Extension Plug for Oxygen Clean, High Quality 1/2" 15mm Brass Ferrule Stop Valve Pn16/Pn20 1/2* 3/4" 1"1 1/2" 2" 1/2" X 20mm to 2" X 63mm Brass Ferrule Valve and so on.