Rudra Tubefittings, located in Kolkata, India, specializes in manufacturing and supplying high-performance Hastelloy B2 Needle Valves, which are specifically designed for extremely corrosive and high-purity process environments. Crafted from the nickel-molybdenum alloy Hastelloy B2, these valves excel at handling strong reducing acids, aggressive chemicals, and highly reactive media. They ensure precise flow control, smooth needle movement, and a reliable leak-tight shutoff even under severe conditions. Rudra’s Hastelloy B2 Needle Valves are known for their long service life, outstanding chemical resistance, and accurate regulation in tough operating conditions, making them a trusted choice in critical industrial applications where stainless steels and conventional alloys often fail.
Hastelloy B2 Needle Valves are made from a nickel-molybdenum alloy that boasts a high molybdenum content, providing exceptional resistance to hydrochloric acid, sulfuric acid in reducing conditions, and corrosion from chlorides. Their mechanical properties include impressive tensile strength, excellent ductility, and strong stability even when temperatures fluctuate. These valves feature precision-machined needle stems, durable seating surfaces, and corrosion-resistant internals, ensuring consistent control. Hastelloy B2 is resistant to pitting, stress-corrosion cracking, and chemical attacks, guaranteeing long-term performance under conditions of vibration, pressure cycling, and exposure to highly reducing environments.
| VALVE SIZE | 1/8″ TO 2″ / 6 MM TO 50 MM |
| THREAD | NPT, BSPP, BSPT, JIC, METRIC, UNF |
| CONNECTION | THREADED, TUBE END, BUTT WELD, SOCKET WELD, FLANGE END |
| FLOW PATTERN | STRAIGHT, ANGLE, CROSS PATTERNS |
| FUNCTION | 2 WAY, 3 WAY |
| BODY SHAPE | SQUARE, ROUND, HEXAGON |
| PRESSURE RATING | 1500 PSI, 3000 PSI, 6000 PSI, 10000 PSI, 15,000 PSI, 20000 PSI |
| ORIFICE SIZE | 2 MM TO 9.5 MM |
| MEDIA | HYDRAULIC OIL, AIR, WATER, GAS, STEAM, HOT WATER , COLD WATER , SEA WATER , CHEMICAL |
| MEDIA TEMPERATURE | (-120* C TO 500*C ) RANGE AS PER PRESSURE |
| BODY TYPE | BAR STOCK, FORGED |
| HANDLE | BAR T-HANDLE,KNOB HANDLE, WHEEL HANDLE |
| PACKING DETAILS | BOX PACKING, WOODEN PALLET |
| EQUIVALENT BRANDS | SWAGELOK, PARKER, DK-LOK, HAMLET, OLIVER VALVES, HOKE |
| MATERIAL | HASTELLOY B2 |
| Hastelloy B2 | Ni | C | Mo | Mn | Si | Fe | P | S | Co | Cr |
| Balance | 0.02 max | 26.0-30.0 | 1.0 max | 0.10 max | 2.0 max | 0.040 max | 0.030 max | 1.0 max | 1.0 max |
| Density | Melting Point | Yield Strength (0.2%Offset) | Tensile Strength | Elongation |
| 9.2 g/cm3 | 1370 °C (2500 °F) | Psi – 51,000, MPa – 350 | Psi -1,10,000, MPa -760 | 40 % |
| STANDARD | UNS | WERKSTOFF NR. |
| Hastelloy B2 | N10665 | 2.4617 |
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Hastelloy B2 Needle Valves find extensive use in industries that deal with strong reducing acids, highly reactive chemicals, and aggressive process media. They are commonly applied in chemical processing plants, pharmaceutical manufacturing, fertilizer production, petrochemical lines, acid recovery systems, catalyst handling units, and specialty chemical industries. These valves are perfect for precise flow control in instrumentation lines, sampling systems, corrosive reactors, injection points, and high-purity chemical circuits.
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