China Industrial Valve Seal Kits Manufacturer Provides Low-Emission Valves and High-Performance Valve Packing & Seal Materials to Meet Premium Industry Standards. We are a premier manufacturer of ASTM A182 F321 check valves, engineered in accordance with API 602 standards. These valves are constructed with a forged stainless steel body, delivering superior corrosion resistance and long-term durability. Designed in a 1-1/2 inch (DN40) size and rated for Class 300 LB (PN50) pressure, they are ideal for a broad spectrum of industrial applications. Featuring flanged ends for secure connections and a bolted bonnet for easy access and maintenance, our check valves ensure reliable, high-performance operation in demanding environments.
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