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Tanvir Nickel Alloys stands out as a top manufacturer and supplier of Duplex Needle Valves in Cairo, Egypt. They specialize in crafting high-quality, corrosion-resistant valves that are built for precision, durability, and dependable performance. These valves are expertly designed to control flow accurately in tough industrial and marine settings, ensuring they operate leak-proof even under high pressure and extreme conditions. You’ll find Tanvir Nickel Alloys’ Duplex Needle Valves widely utilized in the oil & gas, chemical, petrochemical, and desalination sectors, where the need for materials that can withstand corrosive environments and high-pressure systems is crucial.
Duplex Needle Valves are crafted from Duplex Steel S31803 or S32205, which contains about 22% chromium, 5–6% nickel, and 3% molybdenum, along with iron and a touch of nitrogen to boost strength and corrosion resistance. They boast a tensile strength ranging from 620 to 850 MPa, along with excellent yield strength and remarkable resistance to pitting, stress corrosion cracking, and crevice corrosion. Plus, these valves offer great toughness, ductility, and reliability when faced with thermal and mechanical stress.
| 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 Tanvir Nickel Alloys, we take pride in being the largest supplier, exporter, and manufacturer of Duplex Needle Valve in Cairo, Egypt, providing cutting-edge solutions for all your piping needs. Our state-of-the-art production plants are strategically located in the Egypt, 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 employed for precise flow regulation in piping systems, pumps, and instrumentation across the chemical processing, petrochemical, oil & gas, and desalination industries. They’re also perfect for offshore platforms, marine applications, and high-pressure systems where corrosion resistance and accurate control are essential. These valves promise long-lasting, maintenance-free operation, delivering safe, efficient, and reliable performance even in the harshest industrial environments.
