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Home > Product > Ball Valve > Based on Material Type > Super Duplex Ball Valves

Super Duplex Ball Valves – Ultimate Corrosion Resistance for Offshore, Seawater & Critical Fluid Applications

When fluid handling demands extreme strength, maximum corrosion resistance, and zero compromise on reliability, Super Duplex Ball Valves deliver unmatched performance. At Perfect Engineers, we manufacture Super Duplex Stainless Steel (F53 / F55 / UNS S32750 / S32760) ball valves tailored for offshore platforms, desalination plants, marine engineering, petrochemicals, and high-chloride systems.

Our Super Duplex valves are designed for aggressive, high-pressure environments where conventional materials like SS316 or Duplex 2205 may fail.

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What is a Super Duplex Ball Valve?

A Super Duplex Ball Valve is a heavy-duty shut-off valve made from Super Duplex Stainless Steel alloys, offering:

  • Superior pitting resistance
  • Excellent tensile and yield strength
  • Resistance to chloride-induced stress corrosion
  • Long service life in seawater, brine, and acidic media

Common grades include ASTM A182 F53, F55 / UNS S32750 / S32760—ideal for critical applications in corrosive and high-pressure settings.

Key Features of Our Super Duplex Ball Valves

  1. Body & trim in F53 / F55 (S32750 / S32760)
  2. Pressure rating: Class 150 to Class 2500 / PN16 to PN250
  3. Fire-safe (API 607), anti-static, and blowout-proof stem
  4. End connections: BSP, NPT, Flanged, SW, BW, Clamp
  5. Available in 2-way, 3-way, and multi-port designs
  6. Soft seat (PTFE/PEEK) or metal seated for high-temp or abrasive service
  7. Designed to handle seawater, acids, chlorides, and aggressive brine
  8. Compatible with pneumatic and electric actuators (ISO 5211)

Technical Specifications

Parameter Specification
Size Range ½” to 8” (DN15 to DN200)
Pressure Rating Class 150–2500 / PN16–PN250
Body Material ASTM A182 F53 / F55, S32750 / S32760
Seat Materials PTFE, RPTFE, PEEK, Graphite, Metal Seated
End Connections Threaded, Flanged, SW/BW, Clamp
Temp Range -50°C to +300°C
Operation Manual / Pneumatic / Electric (ISO 5211)
Certifications API 607, ISO 10497, CE, IBR, EN 10204 3.1

Super Duplex vs Duplex vs Stainless Steel

Property SS316 Duplex 2205 Super Duplex 2507
Pitting Resistance  Moderate  High  Extreme
Strength (Tensile/Yield)  Good  Higher  Highest
Chloride Environment  Limited  Good  Excellent
Cost
Offshore Suitability Not ideal Acceptable Preferred

Contact Us for Pricing & OEM Support

Call

+91-9004860491

E-mail

[email protected]

Website

www.perfectqrc.com

Applications of Super Duplex Ball Valves

  1. Offshore oil & gas pipelines
  2. Seawater desalination plants
  3. Chlorinated brine handling
  4. Reverse osmosis & marine discharge
  5. Chemical and fertilizer industries
  6. Nuclear and power station cooling loops
  7. Acid and chloride-rich process streams
  8. Fire-safe isolation for petrochemical skids

Types & Options We Offer

  • 2-Way Super Duplex Valve – For high-pressure shut-off
  • 3-Way T-Port / L-Port Valve – For diversion or blending of fluids
  • Fire-Safe Super Duplex Valve – Certified per API 607
  • Automation-Ready Valve – ISO 5211 direct mounting pad
  • Metal Seated or Graphite Packed – For high temp, slurry, or steam
  • MTC, NACE, and EN 3.1 certified valves available on request

Installation & Maintenance Tips

  • Always use compatible Super Duplex fasteners & gaskets
  • Avoid contamination with carbon steel (to prevent galvanic corrosion)
  • Flush thoroughly before use in chlorinated systems
  • Schedule routine maintenance in brine or acidic applications

FAQs

Yes, we provide API 607-compliant fire-safe Super Duplex valves with graphite or metal seats.

Absolutely—Super Duplex is specifically engineered to resist pitting and crevice corrosion caused by chloride-rich fluids.

Yes—all valves come with EN 10204 3.1 certification, and we support TPI approval.

Yes—our valves are ISO 5211 compliant and ready for electric or pneumatic actuation.

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We serve purchase heads, OEMs, and end-users with tailored Super Duplex Ball Valves – Ultimate Corrosion Resistance for Offshore, Seawater & Critical Fluid Applications recommendations and commercial pricing.
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