Super Duplex Valve

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Super duplex valve manufacturer in USA

Super duplex valves engineered for high pressure, high corrosion service environments across the United States. SVR Global produces gate, globe, ball, check, and butterfly valves in super duplex stainless steel grades, built to hold tight tolerances under sustained mechanical and chemical stress.

What is a Super Duplex Valve?

The super duplex valve is made up of a stainless steel that is made up of a two-phase composition, which consists of equal amounts of ferrite and austenite phases. The strength of the steel is a result of the mixture of the two and hence is stronger than the single-phase austenitic stainless steel and more tough than single-phase ferritic stainless steel. It is more resistant to yield strength than the standard austenitic stainless steels. Its other advantages include resistance to pitting, crevice, and chloride stress corrosion.

Materials and Grades:

SVR Global manufactures valves using the following super duplex and duplex grades:

UNS S32750 / F53 (SAF 2507)
UNS S32760 / F55
UNS S32550 / F61
UNS S32205 / F60 (duplex)
UNS S31803 (duplex)

Each casting and forging is traceable, with mill test certificates and material verification available on request.

Manufacturing Process of Super duplex valve:

Material Sourcing & Verification - Raw duplex and super duplex billets, bars, and castings are sourced and verified against ASTM/ASME chemical composition requirements.
Casting/Forging - Bodies and components are cast or forged to the required pressure class and dimensional specification.
Machining - CNC machining ensures that the port, flange face, and stem bore is within tolerance.
Heat Treatment - The solution annealing and controlled cooling processes ensure that the balanced austenite to ferrite ratio is achieved for corrosion resistance purposes.
Assembly - Ball, seats, stems, and trim are assembled and torqued to specifications.
Testing - Hydrostatic shell test, seat leakage test, and Non-destructive testing (NDT: radiographic, penetrant or ultrasonic test) are carried out.
Marking & Packaging - Valve is marked according to ASME B16.34 or client specification standards.

Super Duplex Technical Specifications:

Parameter	Range
Size	1/4" to 72"
Pressure Class	150 to 2500 (ANSI); PN10 to PN450
End Connections	Flanged, buttweld, socket weld, threaded, wafer, lug
Operation	Handwheel, gear, lever, pneumatic actuator, electric actuator
Standards	API 6D, API 600, API 602, ASME B16.34, ISO 17292, AWWA

Industries We Serve:
Oil & Gas Production and Processing – Valves for wellheads, pipelines and processing facilities dealing with crude oil, natural gas and water produced along with hydrocarbons.
Offshore and Subsea Platforms – Valves that are designed to resist exposure to sea water and subsea high pressure.
Marine and Ship Building – Valves used for ballast, bilge and sea water systems.
Chemical Processing – Valves used for processing systems dealing with acid, alkali and other chemicals.
Desalination & Water Treatment – Valves for RO trains, intake systems and high chloride content water systems.
Power Generation – Valves for steam system and cooling water system.
Mining and Mineral Processing – Valves for slurry, tailings and other abrasive fluids.
Pulp and Paper – Valves for bleaching systems and chemical heavy processing systems.
Refining – Valves for high pressure and high temperature pipelines.
Coating and Surface Finish Options:
Passivation - strengthens the natural oxide layer for better corrosion resistance
Electropolishing - smooths the surface to reduce pitting and improve cleanability
Bead blasting - uniform matte finish, often a pre-coating step
Polished finish - low-roughness surface for smooth flow contact
PTFE/PFA lining - added chemical resistance for wetted parts
Epoxy coating - external protection against atmospheric corrosion
Zinc/nickel plating - used on external fasteners and components
Anti galling coating - prevents stem seizing during repeated operation
Surface roughness control (Ra) - specified per application for fouling and inspection needs

Super Duplex Lug Butterfly Valve

Super Duplex Lug Butterfly Valve Body: Super Duplex S2507, UNS S32750, UNS S32760, UNS S32950 Bushing: PTFE Seat: PTFE, VITON, EPDM Shaft: Stainless Steel Disc: Stainless Steel, Carbon Steel Shaft: Stainless Steel O Ring: NBR Dual Plate: Stainless Steel Rivel: Aluminium Swing Bolt: Alloy Steel Nut: Steel Lever: Iron Nominal Size: DN50 to DN300 Nominal Pressure: PN10 to PN64, Class150 to Class2500 Dimensions Unit: mm</st

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Super Duplex Trunnion Ball Valve

Super Duplex Trunnion Ball Valve Body : Super Duplex Stainless Steel Ball: Super Duplex Stainless Steel Seats: PTFE, HDPE, RPTFE, PPL Seals : EPDM Stem : Super duplex stainless steel Nominal Size: DN50 to DN400 Nominal Pressure: Class150 to Class2500, PN16 to PN63 Dimensions Unit: mm Class150 DN <td width="68

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Super Duplex Floating Ball Valve

Super Duplex Floating Ball Valve Body : Super Duplex Stainless Steel Ball: Super Duplex Stainless Steel Seats: PTFE, HDPE, RPTFE, PPL Seals : EPDM Stem : Super duplex stainless steel Nominal Size: DN50 to DN200 Nominal Pressure: Class150 to Class2500, PN16 to PN63 Dimensions Unit: mm Class150 DN d

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Super Duplex Swing Check Valve

Super Duplex Swing Check Valve Body: Super Duplex Stainless Steel 4A, 5A, 6A, Duplex Stainless Steel, Alloy 20, CN7M, Hastelloy, Carbon Steel, WC6, WC9, C5, C12, LCB, CF3M Disc: Super Duplex Stainless Steel, Duplex Stainless Steel, Alloy 20, CN7M, Hastelloy, Carbon Steel, WC6, WC9, C5, C12, LCB, CF3M, Super Duplex Stainless Steel 4A, 5A, 6A Trim: SS304, SS316, SS304L, SS316L, 13%Cr.Steel, Stellite, Hastelloy, Alloy 20, Duplex Stainless Steel, Super Duplex Stainless Steel Gland Packing: Graphite, PTFE <p

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Super Duplex Dual Plate Check Valve

Super Duplex Dual Plate Check Valve Body: Super Duplex Stainless Steel 4A, 5A, 6A, Duplex Stainless Steel, Alloy 20, CN7M, Hastelloy, Carbon Steel, WC6, WC9, C5, C12, LCB, CF3M Disc: Super Duplex Stainless Steel, Duplex Stainless Steel, Alloy 20, CN7M, Hastelloy, Carbon Steel, WC6, WC9, C5, C12, LCB, CF3M, Super Duplex Stainless Steel 4A, 5A, 6A Trim: SS304, SS316, SS304L, SS316L, 13%Cr.Steel, Stellite, Hastelloy, Alloy 20, Duplex Stainless Steel, Super Duplex Stainless Steel Gland Packing: Graphite, PTFE</

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Super Duplex Gate Valve

Super Duplex Gate Valve Body: Super Duplex 5A Stainless Steel, Duplex Stainless Steel, Alloy 20, CN7M, Hastelloy, Carbon Steel, WC6, WC9,C5, C12, LCB, CF3M Bonnet, Gate: Duplex Stainless Steel, Super Duplex Stainless Steel, Alloy 20, CN7M, Hastelloy, Carbon Steel, WC6, WC9, C5, C12, LCB, CF3M Trim: SS304, SS316, SS304L, SS316L, 13%Cr.Steel, Stellite, Hastelloy, Alloy 20, Duplex Stainless Steel, Super Duplex Stainless Steel Gland Packing: Graphite, PTFE Nominal Size: DN15 to DN500 Nominal Pressure: PN 1.0 to 25

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Super Duplex Globe Valve

Super Duplex Globe Valve Body: Super Duplex Stainless Steel 4A, 5A, 6A, F53, F55, Duplex Stainless Steel, Alloy 20, Hastelloy, Titanium, Stainless Steel, Carbon Steel Disc: A182 F51, F53, F55 Disc Nut: A182 F51, F53, F55 Stem: A182 F51, F53, F55 Nut: A194.4 Bolt: A193 B16 Gasket: Stainless Steel+Graphite Backseat: A182 F51, F53, F55 Bonnet: A890 4A, A890 5A, A890 6A Packing: Graphite, PTFE Pin: A182 F6a Gland: A182 F316L Gland Follower: A351 CF8 Stem Nut: Copper Alloy</p

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Super Duplex knife Gate Valve

Super Duplex knife Gate Valve Body: SAF2507, SS2507 Knife: SS304, SS316 Disc: SS304, SS316L Wedge: SS304, SS316, SS316L Packing: PTFE Seal Ring: Polyurethane, EPDM, NBR, VITON Yoke: SS304, SS316 Packing Gland: CF8, WCB Nominal Size: DN50 to DN450 Nominal Pressure: Class150 to Class300, PN10 End Type: Wafer Type, Lug Type Actuation: Handwheel, Electric Actuated, Pneumatic Actuated Dimensions

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Super Duplex Plug Valve

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