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Marsh Nickel Alloys, based in Canberra, Australia, is a trusted manufacturer and supplier of high-quality industrial valves and alloy components for chemical, marine, and engineering applications. One of their specialized products is the Duplex Needle Valve, designed for precise control of fluid flow under high pressure. Each valve is manufactured to strict quality standards to ensure durability, reliability, and smooth operation. Known for its long-lasting performance, the Duplex Needle Valve is ideal for industries requiring accuracy, corrosion resistance, and minimal maintenance. Marsh Nickel Alloys’ valves are widely used in applications where safe and reliable fluid control is critical.
Duplex Needle Valves are made from duplex stainless steel, a blend of austenitic and ferritic stainless steel, which provides excellent mechanical strength, high corrosion resistance, and durability under pressure. This material allows the valve to withstand aggressive chemicals, seawater, and high-pressure fluids. Duplex Needle Valves offer high tensile strength, typically ranging from 600–800 MPa, and excellent resistance to stress corrosion cracking. Their precise machining ensures smooth needle operation, reliable sealing, and minimal wear over time, making them highly durable for industrial, marine, and chemical applications.
| VALVES SIZE | 6 MM TO 50 MM and 1/8″ TO 2″ |
| STANDARD | ASME B 16.10, BS1414/API 600, ASME B 16.5, BS EN 12266-1/API 598, ASME B 16.34, ASTM A890 4A, ASME B 16.25 |
| CONNECTION | TUBE END, THREADED, SOCKET WELD, BUTT WELD, FLANGED, WELD NIPPLE, SAE |
| THREAD | METRIC, BSPP, NPT, JIC, BSPT, UNF |
| FUNCTION | 2 , 5 , 4 , 3 WAY, |
| MATERIAL OF SEAL RING | PVDF, DELRIN, GRAPHITE, PTFE, PEEK, |
| PRESSURE RATING | 15000 , 3000, 1500 , 10000, 6000 , 20000 PSI |
| TEMPERATURE OF MEDIA | (-120* C – 500*C ) AS LIKE PRESSURE RANGE |
| STANDARD | DIN , ISO , API , ANSI , AWWA , ASME , MSS |
| MEDIA | AIR, CHEMICAL, GAS, WATER, STEAM, HOT WATER , HYDRAULIC OIL, COLD WATER, SEA WATER |
| TYPE OF BODY | BAR STOCK |
| EQUIVALENT BRANDS | OLIVER VALVES, PARKER, SWAGELOK, HAMLET, DK-LOK, HOKE |
| PACKING DETAILS | WOODEN PALLET, BOX PACKING |
| ELEMENT | DUPLEX 31803 | DUPLEX 2205 |
|---|---|---|
| NI | 4.50 – 6.50 | 4.50 – 6.50 |
| C | 0.030 max | 0.030 max |
| N | 0.14 – 0.20 | 0.08 – 0.20 |
| P | 0.030 max | 0.030 max |
| MN | 2.00 max | 2.00 max |
| CR | 22.0 – 23.0 | 21.0 – 23.0 |
| S | 0.020 max | 0.20 max |
| MO | 3.0 – 3.5 | 2.50 – 3.50 |
| SI | 1.00 max | 1.00 max |
| FE | 63.72 min | 63.54 min |
| Grade | % Elongation | YS (MPa) | Hardness(BHN) | UTS (MPa) |
| 31803 | 25 min. | 450 min. | 293 max. | 620 min. |
| 2205 | 25 min. | 450 min. | 293 max. | 655 min. |
At Marsh Nickel Alloys, we take pride in being the largest supplier, exporter, and manufacturer of Duplex Needle Valve in Canberra, Australia, providing cutting-edge solutions for all your piping needs. Our state-of-the-art production plants are strategically located in the Australia, allowing us to maintain a vast inventory of over 16,000 tons of premium-quality materials readily available in stock. We are dedicated to delivering superior products and services, ensuring reliability and excellence for our global clientele.
Contact us to get a quick quote for your requirement.
Duplex Needle Valves are widely used in chemical, oil, and gas industries, as well as marine and offshore systems, for precise control of fluid flow. They are ideal for instrumentation, pipelines, and high-pressure process systems where accurate regulation is essential. The valves’ corrosion resistance makes them suitable for seawater, acidic, or saline environments. They are also used in power plants, desalination systems, and industrial processing equipment to ensure safe, leak-free operation. Duplex Needle Valves provide reliable performance, reduce maintenance, and enable precise flow control in demanding environments, making them essential components in critical fluid-handling applications.
