Super Duplex Gate Valve Manufacturer in India
Super Duplex Stainless Steel grade comprises both the austenitic and ferritic structures and hence has high strength along with pitting, crevice and chloride corrosion resistance. Speciality Valve is a prominent Super Duplex Gate Valve Manufacturer in India, manufacturing gate valves for demanding offshore, marine, desalination, oil and gas and process applications.
Super Duplex Gate Valve Material Grades:
- F53: UNS S32750 super duplex stainless steel
- F55: UNS S32760 super duplex stainless steel
- UNS S32750: Commonly associated with 2507 super duplex construction
- UNS S32760: Super duplex grade with high resistance to chloride-bearing environments
- F61: Applicable super duplex material where specified
- Cast and forged material specifications should be matched to the selected valve construction and project requirements.
Technical Specifications:
- Valve Type: Super Duplex Gate Valve
- Body Materials: Super Duplex Stainless Steel and compatible alloys
- Nominal Size: DN15 to DN500
- Nominal Pressure: PN1.0 to 25 MPa
- Pressure Class: Class 150 to Class 2500
- End Connections: Flanged, socket-weld and butt-weld
- Operation: Handwheel, electric actuated or pneumatic actuated
Final size, pressure-temperature capability and end configuration depend on the selected design.
Super Duplex Valve Materials:
- Body: Super duplex stainless steel or compatible pressure-boundary alloy
- Bonnet: Super duplex, duplex or specified corrosion-resistant alloy
- Gate: Super duplex stainless steel or compatible alloy
- Stem: Stainless steel, super duplex or service-specific alloy
- Trim: SS304, SS316, 13% chromium steel, duplex, super duplex or nickel alloy
- Packing: Flexible graphite or PTFE, according to service
- Fasteners: Corrosion-compatible grade selected for the valve assembly
The complete wetted construction should be reviewed rather than relying on body material alone.
Corrosion-Resistance Advantages:
- High resistance to pitting by chlorides
- Better resistance to crevice corrosion than conventional stainless steels
- Resistance to chloride stress corrosion cracking
- High mechanical strength
- Suitable for demanding seawater environments
- Reduced material thickness may be possible where strength permits
- Useful for aggressive offshore and process services
Super duplex should not be treated as universally corrosion-proof. Chloride concentration, temperature, velocity, oxygen content and process chemistry remain important.
Pressure and Connection Arrangements
The valve can be configured with flanged, socket-weld or butt-weld ends according to piping requirements. Flanged construction is suitable where equipment removal is required, while welded connections can be used for permanent piping systems.
For automated applications, actuator selection should consider valve size, differential pressure, stem thrust and required operating time.
Industrial Applications:
- Offshore Platforms: Seawater, injection-water and process isolation.
- Desalination Plants: High-chloride water and brine services.
3.Marine Systems: Seawater handling and utility piping.
- Oil & Gas: Hydrocarbon and water-injection systems.
- Chemical Processing: Compatible corrosive process fluids.
Speciality Valve manufactures super duplex gate valves with material and construction options selected for demanding corrosion and pressure conditions. For a project-specific requirement, get in touch with Speciality Valve, the leading Super Duplex Gate Valve Manufacturer in India with the complete process data.
Visit us: https://www.specialityvalve.com/product/super-duplex-gate-valve/