PIC Gauges 2.5" Liquid-Filled Pressure Gauge — Front Flange Panel Mount, 1/4" NPT, Stainless Steel
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PIC Gauges
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204L-254C
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The PIC Gauges 204L (200 Series) is a 2-1/2" dial, glycerine-filled pressure gauge built for air, water, oil, gas, and other media not corrosive to brass. The glycerine fill dampens vibration and pulsation for steadier, easier-to-read measurements and longer service life — ideal for compressed air systems and panel installations. A front-flange design lets it mount cleanly into a panel face with a 1/4" NPT center-back connection.
Which range should you choose?
Pick the range type that matches what your system does:
- Pressure (e.g. 0–100 PSI): Positive pressure only — what almost every air-compressor and shop-air job needs.
- Compound (e.g. 30 inHg vacuum to 100 PSI): Reads both vacuum and positive pressure on one dial — for systems that pull suction and also build pressure.
- Vacuum only (0 to 30 inHg): Suction / negative pressure only.
What does "inHg" mean? It stands for inches of mercury — the standard unit gauges use to measure vacuum, meaning pressure below normal atmospheric pressure (in other words, suction). 0 inHg is ordinary atmospheric pressure, and about 30 inHg is a near-complete vacuum — roughly 14.7 PSI of suction. So a gauge marked "30 inHg" reads the entire vacuum range, from no suction down to full vacuum. (By comparison, PSI measures pressure above atmospheric.)
Key specifications
- Brand / series: PIC Gauges, 200 Series, Model 204L
- Dial size: 2-1/2"
- Connection: 1/4" NPT, male, center back
- Mounting: Front flange, panel mount
- Fill: Glycerine (liquid filled)
- Case & bezel: Stainless steel
- Internals: Copper alloy (brass) with phosphor bronze Bourdon tube
- Accuracy: 2-1-2% (ASME B40.1 Grade A)
- Temperature rating: 30°F to 160°F
- Pressure ranges: Vacuum, compound, and positive ranges from 30 inHg up to 0-15,000 PSI (select below)
Typical applications
Air compressors, pneumatic systems, water and hydraulic lines, pumps, and any panel-mounted installation subject to vibration or pulsation where a stable, durable gauge is required.
The PIC 204L liquid-filled pressure gauge pairs a corrosion-resistant stainless steel case with brass internals and a glycerine fill for dependable, vibration-resistant readings in a 2-1/2" front-flange panel-mount package.
NOTE: Actual product may be different from pictured!
Financing Options
Financing Options
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