Alloy 20 Ball Valve

An Alloy 20 ball valve is a premier, corrosion-resistant quarter-turn rotary valve cast or forged from high-performance nickel-iron-chromium-copper superalloy (equivalent to ASTM A351 grade CN7M or UNS N08020) to handle highly aggressive media, specifically sulfuric acid, phosphoric acid, and chlorinated solutions. The integration of 32% to 38% nickel and 3% to 4% copper in its matrix provides unmatched chemical resistance that virtually eliminates the risks of localized pitting, crevice corrosion, and chloride-induced stress corrosion cracking that typically destroy standard 304 and 316 stainless steels. Operating with a polished spherical ball rotating against high-grade polymer seats (such as PTFE, TFM1600, or PEEK), the valve incorporates an anti-blowout, bottom-entry stem, statically grounded internals, and adjustable online packing to ensure absolute fluid containment under extreme pressures and thermal cycling. Piping network operators and chemical process layout engineers can eliminate severe acid leaks and extend maintenance lifespans by importing certified Alloy 20 ball valves directly from specialized manufacturers in China via our advanced B2B commercial platform.