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Santner Nickel Alloys is a reputable manufacturer and supplier located in Hamilton, New Zealand, specializing in high-quality Duplex Needle Valves designed for precision and performance in tough industrial settings. With a reputation built on advanced manufacturing methods, rigorous quality control, and dependable product consistency, the company guarantees that its valves comply with international safety and durability standards. Their Duplex Needle Valves excel in corrosion resistance, pressure endurance, and operational accuracy, making them perfect for critical fluid-control tasks. Committed to customer satisfaction and technical excellence, Santner Nickel Alloys consistently delivers robust, cost-effective flow-control solutions to industries around the globe.
Duplex Needle Valves are crafted from duplex stainless steel, which contains about 22–25% chromium, 5–7% nickel, 3–4% molybdenum, and controlled nitrogen. This unique composition creates a dual-phase ferritic-austenitic structure that provides outstanding resistance to pitting, crevice corrosion, and stress corrosion cracking. On the mechanical side, Duplex steel boasts high tensile and yield strength, excellent fatigue resistance, and impressive impact toughness. These characteristics enable the needle valve to maintain precise flow regulation even under high pressure, fluctuating temperatures, and harsh environments, ensuring long-lasting reliability and superior mechanical stability.
| 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 Santner Nickel Alloys, we take pride in being the largest supplier, exporter, and manufacturer of Duplex Needle Valve in Hamilton, New Zealand, providing cutting-edge solutions for all your piping needs. Our state-of-the-art production plants are strategically located in the New Zealand, 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 find their place in various industries where precise fluid control, corrosion resistance, and high mechanical strength are crucial. In the oil and gas industry, they are commonly used in offshore platforms, wellheads, and high-pressure instrumentation systems that face harsh, chloride-rich conditions. Chemical and petrochemical facilities depend on them for managing corrosive fluids in reactors, process lines, and sampling systems. Additionally, they play a vital role in desalination plants, ensuring efficient operation in challenging environments.
