Super Duplex Gate Valve
Super Duplex Gate Valve – High Strength with Superior Chloride and Sour Service Resistance
Super Duplex Gate Valves utilize super duplex stainless steel (UNS S32750, S32760) combining austenite-ferrite microstructure for 2× the yield strength of 316 stainless with exceptional resistance to chloride stress corrosion cracking and sour service (H₂S) environments. This advanced alloy dominates African offshore oil & gas, subsea production, and sour service applications where high strength and corrosion resistance must coexist.
Critical for West African offshore production from Nigerian subsea manifolds to Angolan deepwater installations, super duplex gate valves serve DN 15 to DN 400 (1/2″ to 16″) high-strength corrosive applications in Class 150-900 ratings. The super duplex microstructure provides NACE MR0175 sour service compliance combined with exceptional resistance to chloride pitting, crevice corrosion, and stress corrosion cracking—essential for African offshore oil & gas environments with high chloride content and H₂S concentrations. Reference our Gate Valve category for design fundamentals.
Key Features & Benefits
High strength
Chloride resistance
Sour service
Size Range: DN 15 to DN 400 (1/2" to 16")
Pressure Class: Class 150-900
API 600/API 6D Certified
Global Applications
West African offshore production platforms, subsea manifolds, and export systems requiring high strength with exceptional chloride and sour service resistance.
Deepwater production systems, subsea trees, and flowline isolation where super duplex provides NACE compliance with 2× the strength of 316 stainless.
H₂S-containing environments in African oil & gas production requiring NACE MR0175 material compliance with superior strength and corrosion resistance.
Products
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