Duplex Steel Ball Valve Manufacturer & Exporter
ASTM A995 4A / A182 F51 (UNS S31803 / 2205) · 1/2" to 24" (DN15–DN600) · Class 150 / 300 / 600 / 900 · API 608 / API 6D, fire safe API 607. Exported to Saudi Arabia, UAE & 40+ countries with full documentation.
Why Duplex Steel for Ball Valves?
Duplex Steel ball valves combine the ball valve's proven shutoff design with twice the yield strength of SS316 with far better chloride pitting and stress-corrosion resistance. This makes them the standard specification for seawater below 20°C, brackish water, brine, FGD systems, chemical processing, and offshore topside piping.
Supreme Valves manufactures duplex steel ball valves in ASTM A995 4A / A182 F51 (UNS S31803 / 2205) with design and testing per API 608 / API 6D, fire safe API 607. Every valve ships with EN 10204 3.1 material certificates and full pressure test reports; third-party inspection by Lloyd's, BV, or TÜV is available for project orders.
Duplex Steel Ball Valve Specifications
| Parameter | Specification |
|---|---|
| Body Materials | ASTM A995 4A / A182 F51 (UNS S31803 / 2205) |
| Corrosion Index | PREN 34–35 |
| Temperature Range | -50°C to +250°C |
| Size Range | 1/2" to 24" (DN15–DN600) |
| Pressure Class | Class 150 / 300 / 600 / 900 |
| End Connections | Flanged RF/RTJ, Butt Weld, Screwed, Socket Weld |
| Design Standard | API 608 / API 6D, fire safe API 607 |
| Testing | API 598, hydrostatic shell & seat; NDE (RT/PT/UT) on request |
| Documentation | EN 10204 3.1/3.2 MTC, NACE MR0175 compliance, IBR where applicable |
Available Designs
Industries We Serve
Frequently Asked Questions
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