ASTM B62 Butterfly Valve

An ASTM B62 Butterfly Valve is a valve made from an bronze alloy composed of copper, tin, lead, and zinc, specified by ASTM B62 and identified as Copper Alloy UNS No. C83600, commonly known as 85-5-5-5 bronze. This standard ensures high-quality castings for components such as valves, flanges, and fittings. These valves are quarter-turn valves that use a rotating disc to control fluid flow. The disc, mounted on a central shaft, is perpendicular to the flow when closed and parallel when fully open, allowing nearly unrestricted fluid passage.