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Duplex ball valves have the advantages of both ferritic stainless steel and austenitic stainless steel: austenitic stainless steel reduces the brittleness, maintains excellent toughness and weldability; ferritic stainless steel improves the yield strength, intergranular corrosion resistance and chloride stress corrosion resistance.
Offering the perfect balance of high strength and extreme corrosion resistance. Engineered to withstand chloride stress and pitting where standard stainless steel fails.
Reliable, Durable, and ISO Certified.
JST offers a comprehensive range of Duplex check valves for all types of applications and industries. As for dual plate check valves, they have JB/T 8937 & API 594 design, wafer type. As for the end connections: Flange RF, Wafer & Lug are all standard units.
The other available type of JST Duplex check valves includes Duplex pressure seal check valve, Duplex nozzle check valve, Duplex single plate check valve, Duplex lift type check valve, Duplex swing check valve.
Duplex stainless steel is a steel which has half of ferrite phase and half of austenitic phase in its quenching structure,and generally the minimum phase content must be up to 30%.
Duplex stainless steel has the advantages of both ferritic stainless steel and austenitic stainless steel: austenitic stainless steel reduces the brittleness, maintains excellent toughness and weldability; ferritic stainless steel improves the yield strength, intergranular corrosion resistance and chloride stress corrosion resistance.
Duplex stainless steel has the advantages of both ferritic stainless steel and austenitic stainless steel: austenitic stainless steel reduces the brittleness, maintains excellent toughness and weldability; ferritic stainless steel improves the yield strength, intergranular corrosion resistance and chloride stress corrosion resistance.
The microstructure of the duplex stainless steel globe valve consists of a mixture of an austenitic phase and a ferrite phase. Therefore, the duplex steel has both austenitic and ferritic stainless steel properties.
The duplex globe valve uses stainless steel which has stronger resistance to corrosion than the commonly used grades of stainless steel valves, namely 304 valves and 316 valves. Duplex stainless steel valves are widely used in various industries such as the chemical industry, seawater desalination, shipbuilding, petrochemical industry, oil, and gas industry.
Duplex stainless steels are called “duplex” because they have a two-phase microstructure consisting of grains of ferritic and austenitic stainless steel.
Strength: Duplex stainless steels are about twice as strong as regular austenitic or ferritic stainless steels.
Super duplex valves are used in many industries such as petrochemical, chemical equipment, food processing, oil, and gas.
Hastelloy ball valves are manufactured with ultra-low carbon and high nickel, molybdenum, and chromium content,
providing exceptional corrosion resistance and high-temperature stability.
These valves are widely used in aggressive chemical environments and are well known for their excellent machinability
and long service life.
JST supplies Hastelloy ball valves in various pressure ratings, sizes, and custom dimensions according to your specifications.
Bulk orders and OEM requirements are welcome. Please contact us for technical details and quotation.
Hastelloy B series valves corrosion resistance feature: It has the good corrosion resistance performance in the reducible sour medium and so on the hydrochloric acid, sulfuric acid, phosphoric acid.
JST offers a comprehensive range of Hastelloy check valve for all types of applications and industries including ressure seal check valve, Hastelloy dual plate check valve, Hastelloy nozzle check valve, Hastelloy single plate check valve, Hastelloy lift type check valve and Hastelloy swing check valve.
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