Paul Tube Fittings, based in Houston, USA, stands out as a leading manufacturer and supplier of Hastelloy B2 Needle Valves, specifically designed for precise fluid control in highly corrosive and reducing environments. Made from high-quality Hastelloy B2 alloy (UNS N10665), these needle valves boast exceptional resistance to hydrochloric acid, hydrogen chloride, and other harsh chemicals. Built for fine flow regulation and leak-tight shutoff, they feature a robust construction that’s perfect for demanding process conditions. Paul Tube Fittings guarantees outstanding dimensional accuracy, mechanical reliability, and adherence to global quality standards—making these valves a preferred choice in the chemical, pharmaceutical, and petrochemical sectors.
The Hastelloy B2 Needle Valves from Paul Tube Fittings are expertly crafted from nickel-molybdenum alloy UNS N10665. This alloy is known for its remarkable resistance to pure hydrochloric acid and strongly reducing environments, while also reducing the chances of stress corrosion cracking and pitting. The valves showcase impressive tensile strength (up to 690 MPa), high ductility, and stability even in extreme conditions. With a finely threaded stem and corrosion-resistant internals, they ensure precise flow control and a long operational lifespan. These needle valves maintain their structural integrity under thermal and mechanical stress, making them incredibly reliable for critical flow applications in harsh industrial settings.
| 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 are perfect for industries that need precise control over corrosive fluid or gas flow. They find extensive use in chemical processing, acid manufacturing, pharmaceuticals, agrochemicals, and semiconductor production—especially in systems dealing with hydrochloric acid, acetic acid, and hydrogen chloride. These valves deliver accurate metering and shutoff in high-pressure situations and are crucial for ensuring safety and performance in aggressive chemical environments. Paul Tube Fittings’ Hastelloy B2 Needle Valves are essential tools for maintaining operational efficiency and safety in these demanding applications.
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