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When you need exceptional mechanical strength, superior corrosion resistance, and long-term performance under harsh conditions, Duplex Ball Valves are the smart choice. At Perfect Engineers, we manufacture premium-grade Duplex and Super Duplex Ball Valves for industries that demand durability in chloride-rich, saline, high-pressure, and offshore environments.
These valves are ideal for seawater service, desalination, oil & gas, power plants, and chemical processes—where regular stainless steel fails due to pitting or stress corrosion.
A Duplex Ball Valve is a valve made from duplex stainless steel alloys—typically ASTM A182 F51 (Duplex 2205) or F53/F55 (Super Duplex 2507). These materials combine the benefits of austenitic and ferritic steels, offering:
| Parameter | Specification |
| Size Range | ½” to 6” (DN15 to DN150) |
| Pressure Rating | Class 150 to 1500 / PN16 to PN160 |
| Body Materials | Duplex F51 (2205), Super Duplex F53/F55 (2507) |
| Seat Options | PTFE, RPTFE, PEEK, Graphite, Metal Seated |
| Temp Range | -46°C to +250°C |
| Operation | Manual / Pneumatic / Electric (ISO 5211) |
| End Connections | Flanged, Threaded, SW/BW, Clamp |
| Property | Duplex (F51 / 2205) | Super Duplex (F53 / F55 / 2507) |
| Pitting Resistance | High | Extremely High |
| Strength | Excellent | Superior |
| Cost | Slightly higher | |
| Best For | General chloride service | Aggressive saline & sour service |
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www.perfectqrc.com
Yes. They’re designed for high-pressure seawater and brine handling
Yes—all valves are API 607 / ISO 10497 fire-safe certified.
Absolutely. We offer electric and pneumatic actuator packages.
Yes—we supply F53/F55 (2507) valves with MTC and third-party inspection.
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