


Dwyer Instruments TNV-1 | PTFE needle valve | Female x female
In order to regulate corrosive gases and liquids for high purity services, the Model TNV-1 PTFE Needle Valve is intended for use in laboratory and industrial settings. Only PTFE and PCTFE are contacted by the media. In order to reduce the "creeping" that is typically associated with PTFE, valve spindles are manufactured with ridged PCTFE. The TNV can be used as a shut-off valve and is intended for use in pressure or non-critical vacuum applications.

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End connection | 3/8" female NPT |
Flow Coefficient | 0.75 |
Manufacturer | Dwyer Instruments |
Material | Wetted: Body and O-ring: PTFE; Valve spindle: PCTFE |
Max Flow Rate | Air: 300 LPM; Water: 9 LPM |
Maximum Operating Pressure | 75 psi (517 kPa) |
Maximum operating temperature | 150°F (65°C) |
Type | Needle Valve |
- The Model TNV PTFE Needle Valve is specifically designed for laboratory and industrial applications where regulation of corrosive gases and liquids is required, making it suitable for high purity services.
- Media only come in contact with PTFE (polytetrafluoroethylene) and PCTFE (polychlorotrifluoroethylene), ensuring compatibility with a wide range of corrosive substances and maintaining purity.
- Valve spindles are made of ridged PCTFE to minimize "creeping" typically associated with PTFE, enhancing stability and reliability during operation.
- The TNV is designed to be used in pressure or non-critical vacuum applications, providing versatility in application scenarios.
- This needle valve can also be utilized as a shut off valve, offering added functionality and flexibility in fluid control systems.
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