Duplex Steel S31803 Hydraulic Ball Valves


Arrow Piping Solutions is a trusted manufacturer and supplier of Duplex Steel S31803 Hydraulic Ball Valves in India. Our valves are known for high corrosion resistance, superior strength, and performance under extreme pressure and temperature conditions. We manufacture a wide variety of Duplex Valves including instrumentation, compression, high-pressure, and low-pressure variants for use in oil & gas, pharmaceuticals, and food processing sectors.


Made from dual-phase microstructured alloys like UNS S31803 and UNS S32205, our valves offer outstanding resistance to chloride stress and pitting corrosion. These ball valves exhibit a PREN value ranging from 38 to 45 and are preferred for their long life, precision control, and leak-free operation.

Duplex Steel S31803 Valve Fittings

Duplex Steel Ball Valve Specifications

Size1/2" to 4" (DN25-DN200)
Thread TypesNPT, PT, BSPP, G
ConnectionsWelded, Socket, Clamped, Flanged, Threaded
Pressure ClassesPN10/16, Class 1500 to Class 4500 (3600–10000 psig)
OperationManual, Electric Actuator, Pneumatic
StandardsASME B16.34, API 598, MSS SP-110
MediaOil, Gas, Water, Air, Inert Gases
Seal MaterialsPPL, PTFE, Graphite
Material GradesA182 F51, A890 Gr 4A, S31803, S32205
Manufacturing ProcessForged Bar Stock
Leakage RateSoft Seal: Zero Leak, Hard Seal: ≤ Rated Flow 10⁻⁵
PackagingPVC Wrap, Wooden Case, Custom Packaging

Pressure Ratings (A890 Gr 4A)

NPSPressure (PSIG)
1/2" – 1-1/2"1000 PSIG
2"800 PSIG
3"600 PSIG
4" – 5"500 PSIG
6"300 PSIG

Types of Duplex Ball Valves Offered by Arrow Piping Solutions

  • 1803 Duplex Stainless Steel High Pressure Ball Valve – 6000 PSI BSP & NPT
  • Duplex Steel 3PC Tri-Clamp Sanitary Ball Valves
  • Duplex 1PC High Pressure Ball Valve 1000 WOG
  • ASTM A890 DSS Lockable Female Ball Valves
  • Alloy 1.4462 Mini Ball Valves – 1/4" OD 6000 PSI
  • Compression Double Ferrule Duplex Ball Valves
  • Flanged Full Bore Flow Control Ball Valves
  • Instrumentation Angle and Diverter Valves – Manual and Automated

Applications of Duplex Valves

Arrow Piping Solutions’ Duplex Steel Ball Valves are widely used in:

  • Dairy Industry
  • Food & Beverages
  • Pharmaceutical Processing
  • Cosmetic Manufacturing
  • Chemical Industry
  • Water Treatment Plants
  • Oil & Gas Refineries
  • Power Plants
  • Marine Engineering
  • Instrumentation & Control Systems

Brands & Compatibility

We also stock compatible and alternative products from:

  • Swagelok
  • Parker
  • DK LOK
  • Hamlet Letlok
  • DUOLOK, GYROLOK, TYLOK, BILOK

Looking for the best quality Duplex Steel Ball Valves at competitive prices? Arrow Piping Solutions delivers across India and exports from Mumbai Port. Contact us for bulk inquiries, OEM services, or custom designs.