| Customization: | Available |
|---|---|
| Power: | Hydraulic |
| Connection Mode: | External Thread |
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NAl-LOK brand was established in Shanghai in 2000, we focus on the production, research and development, salesof instrumentation valves, fittings, hose & tubing.
The NH Series Needle Valve, constructed from UNS S32750 (Super Duplex Stainless Steel), is engineered for precision flow control in high-pressure, corrosive, and extreme environments. Designed for industries such as oil & gas, chemical processing, marine, and power generation, this valve ensures reliable performance under demanding conditions.
Key Features & Functions:
Superior Material Performance
UNS S32750 (Super Duplex SS) offers exceptional strength (2x higher than standard 316SS), outstanding corrosion resistance (against chlorides, acids, and seawater), and excellent stress cracking resistance. Ideal for harsh media like H2S, brine, and high-temperature steam.
Precision Flow Regulation
The tapered needle-shaped plunger allows fine-tuned, gradual flow adjustment, minimizing pressure drops and preventing sudden surges. Suitable for instrumentation, hydraulic systems, and metering applications.
High-Pressure & Temperature Resilience
Rated for PN40/ANSI 300 and beyond, with a temperature range of -40°C to 250°C (-40°F to 482°F). Robust construction ensures leak-proof operation even under cyclic loading.
Bidirectional Sealing & Zero Leakage
Metal-to-metal sealing (or optional PTFE seats) provides bubble-tight shutoff, complying with API 598/ISO 5208 standards. Bi-directional design accommodates flow from either port.
Compact & Maintenance-Friendly
Compact body design saves space in piping systems. The integrated stem packing (Graphite/PTFE) reduces wear, while the smooth-threaded stem ensures effortless operation over long service life.
Versatile Configurations
Available in swivel/flanged ends, extended bonnet (for cryogenic use), and actuated versions (pneumatic/electric) for remote control.
| Nickel-Copper Alloy | UNS N04400 (400 Series) | Nickel-Copper Alloy Tube |
| 600 Series | Nickel-Chromium Alloys | UNS N06600, UNS N06601, UNS N06625 |
| 800 Series | Nickel-Iron-Chromium | UNS N08800, UNS N08810, UNS N08811, UNS N08825 |
| Pure Nickel Alloy | - | UNS N02200, UNS N02201 |
| Corrosion-Resistant | - | UNS N10276 (HC276), UNS N06022 (HC22), UNS N06200, UNS N10665 (B2), UNS N10675 (B3) |
| High-Temperature | - | GH3030, GH3039 |
| Other Alloys | - | UNS N08020, UNS N08021, S32205, S32750, S31254 (6Mo/6-Moly), 904L (N08904) |
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