ASTM B62 Gate Valve

An ASTM B62 gate valve is a heavy-duty, linear-motion isolation valve cast from standard 85-5-5-5 bronze (85% copper, 5% tin, 5% lead, and 5% zinc) to deliver exceptional dezincification resistance and structural integrity in marine, HVAC, and water treatment systems. This specialized metallurgical composition eliminates the risk of porosity and stress corrosion cracking when handling steam, mild chemicals, or aggressive seawater. Operating via a multi-turn, blowout-proof stem that drives a solid wedge disc perpendicular to the fluid flow, the valve features precision-lapped sealing faces and deep multi-layer PTFE or graphite packing to achieve bubble-tight zero leakage under high pressure fluctuations. Piping infrastructure networks and marine engineering contractors can eliminate dezincification failures and maximize salt-water system longevity by importing certified ASTM B62 gate valves directly from leading manufacturers in China via our advanced B2B commercial platform.