Product Knowledge | Basic Information on JW-LOK NU Series Threaded Bonnet Needle Valves
Release date:
2026-06-05
JW-LOK’s NU series threaded bonnet needle valves feature a bonnet‑threaded, screw‑type locking fastening design, offering a compact overall structure and excellent cost‑effectiveness. They utilize a needle‑shaped valve plug to achieve precise, minute‑level throttling and reliable on/off control of pipeline flow. These valves are suitable for standard instrumentation lines, sampling circuits, and gas‑supply pressure‑regulation applications, with easy disassembly and straightforward maintenance.
JW-LOK’s NU series threaded bonnet needle valves feature a screw‑on bonnet‑threaded locking fastening design, offering a compact overall structure and excellent cost‑effectiveness. They utilize a needle‑type valve plug to achieve precise, minute‑level throttling and reliable pipeline on/off control. These products are suitable for standard instrumentation lines, sampling circuits, and gas‑supply pressure‑regulation applications, with easy disassembly and straightforward maintenance.
Core Structural Design
• Structural Design: It features a threaded bonnet, a two-piece non-rotating stem design, and is paired with a square‑bar valve body and a back‑seal configuration.
• Connection method: Support internal / Various connection types, including external threads, ferrules, and socket-welded joints.
• Sealing Principle : The valve spool is conical ( “Needle”), when pressed into the valve seat, achieves zero leakage through metal-to-metal contact or a soft seal (such as PTFE).
JW-LOK Product Specifications
01. Product Features
02. Product Technical Specifications
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