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Duplex Steel Ball Valve 

Function & Working
Duplex steel ball valves utilize a quarter-turn operation for quick on/off service in corrosive and high-pressure environments. The duplex microstructure offers exceptional resistance to chloride stress corrosion cracking and pitting. 

Advantages 

• High mechanical strength with corrosion resistance 

• Long service life in seawater and aggressive fluids 

• Low torque operation with bubble-tight shutoff 

Types Offered 

• Floating ball valve 

• Trunnion-mounted ball valve 

• 3-way ball valve 

Industries Served
Marine, Offshore, Chemical Processing, Desalination, Oil & Gas 

Technical Specifications 

• Design Standards: API 6D, ISO 17292, ASME B16.34 

• Body Materials: Duplex UNS S31803, Super Duplex UNS S32750/S32760 

• Pressure Ratings: Class 150–2500 / PN16–PN420 

• Size Range: DN15–DN900 

• End Connections: Flanged, Butt Weld, Socket Weld, Threaded 

• Actuation Options: Lever, Gearbox, Pneumatic, Electric, Hydraulic 

• Special Features: Fire-safe tested to API 607, antistatic design, double block & bleed capability