1/8 NPT Mini Ball Valve Full Port 600WOG Instrument Shut Off Valve
1/8 NPT mini ball valve with blowout proof stem, full port design, brass/304/316 body, 600WOG rating, compact for lab, pneumatic & gas sampling pipelines.
Description
I. Basic Product Function
The 1/8 NPT mini ball valve is a DN6 ultra‑compact straight‑through shutoff valve, specifically engineered for micro‑sampling and pneumatic branch lines. It employs a 90° quarter‑turn lever for rapid on/off actuation without multiple rotations. Featuring a 2‑piece threaded mini ball valve construction, it allows easy disassembly and maintenance. As a line isolation valve, it effectively blocks media flow, preventing leakage during sampling or equipment servicing. It is well‑suited for low‑flow applications involving trace gases, oils, and purified water.
II. Core Materials and Standard Specifications
The body is available in forged brass, SS304, or SS316, with wear‑resistant PTFE seals. The design fully complies with ANSI B1.20.1 for American NPT threads. The blowout‑proof stem mini ball valve construction prevents high‑pressure media from escaping through the stem, and the pressure rating meets the industry‑standard 600WOG.
| Parameter | Standard Specification |
|---|---|
| Nominal size | 1/8 inch (DN6) |
| Connection thread | NPT male or female (optional) |
| Pressure rating | 600WOG (PN40) |
| Temperature range | –20°C ~ 180°C |
| Body material | Forged brass / SS304 / SS316 |
| Flow path | Full port mini ball valve (full bore) |
| Operation | Quarter‑turn manual handle |
| Seal material | Reinforced PTFE |
III. Key Product Advantages
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Extremely compact body – allows dense arrangement in control cabinets with crowded piping, significantly saving installation space.
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Full‑port design with no reduction – ensures minimal pressure drop, preserving sampling accuracy without deviation.
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Stainless steel version (stainless 1/8 NPT mini ball valve) – resists mild corrosive media, making it suitable for oil/gas and chemical laboratories.
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600WOG pressure capability – handles high‑pressure applications, offering stable operation for over 50,000 cycles in small hydraulic and natural gas branch lines without leakage.
IV. Industry Applications and Real‑World Case
As a professional instrument mini ball valve, it is widely used in pneumatic manifolds, oil/gas sampling lines, precision refrigeration, and bio‑detection equipment.
Real‑world application case: BioTech Lab in Zhangjiang, Pudong, Shanghai. This biology laboratory purchased in bulk the stainless steel version of the 1/8 NPT mini ball valve for their HPLC systems and micro‑reagent transfer lines. Given the confined internal space of the instruments, the valve’s compact body allows direct integration. The 90° quick‑action feature enables rapid switching between reagent lines, while the full‑port flow path leaves no media residue, preventing cross‑contamination between different reagents. Long‑term operation shows zero internal leakage, meeting the standards for bio‑clean piping.
In addition, this miniature ball valve is extensively used in oil/gas surface control cabinets, small air compressors, and precision testing instruments, satisfying shutoff needs for low‑pressure oil/gas, compressed air, and purified water lines.
V. Selection Guidance
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For purified water and compressed air, choose the brass version.
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For oil/gas and trace acid/alkali reagents, prefer the stainless 1/8 NPT mini ball valve.
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For high‑pressure sampling lines, directly select the 600WOG pressure‑rated model. Customization options include locking handles and extended stems.