Pressure Gauges
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$57.40
Subject to factory lead times
$551.22
Subject to factory lead times
$882.25
Subject to factory lead times
$228.34
Subject to factory lead times
$599.22
Subject to factory lead times
$785.36
Subject to factory lead times
$126.85
Subject to factory lead times
$228.34
Subject to factory lead times
$66.37
Subject to factory lead times
$882.25
Subject to factory lead times
$176.83
Subject to factory lead times
$388.63
Subject to factory lead times
$356.53
Subject to factory lead times
$388.63
Subject to factory lead times
$388.63
Subject to factory lead times
$2,016.44
Subject to factory lead times
$802.79
Subject to factory lead times
$186.77
Subject to factory lead times
$932.04
Subject to factory lead times
$932.04
Subject to factory lead times
$260.04
Subject to factory lead times
$599.22
Subject to factory lead times
$388.63
Subject to factory lead times
$367.87
Subject to factory lead times
$57.40
Subject to factory lead times
$551.22
Subject to factory lead times
$882.25
Subject to factory lead times
$228.34
Subject to factory lead times
$599.22
Subject to factory lead times
$785.36
Subject to factory lead times
$126.85
Subject to factory lead times
$228.34
Subject to factory lead times
$66.37
Subject to factory lead times
$882.25
Subject to factory lead times
$176.83
Subject to factory lead times
$388.63
Subject to factory lead times
$356.53
Subject to factory lead times
$388.63
Subject to factory lead times
$388.63
Subject to factory lead times
$2,016.44
Subject to factory lead times
$802.79
Subject to factory lead times
$186.77
Subject to factory lead times
$932.04
Subject to factory lead times
$932.04
Subject to factory lead times
$260.04
Subject to factory lead times
$599.22
Subject to factory lead times
$388.63
Subject to factory lead times
$367.87
Subject to factory lead times
- Most pressure gauges are Bourdon tube types - a curved metal tube that straightens slightly under pressure and drives a needle through a gear linkage. That's what you see on 90% of pipes in any plant. For low pressure or corrosive service, diaphragm and capsule gauges use a flexible element instead of a tube. Bellows gauges show up in low-pressure precision work. Then on top of the mechanism, you've got case styles (utility for cheap general use, industrial for plant service, process for harsh conditions, test for calibration, digital when you want electronic readout) and dial sizes from 1.5 inch panel gauges up to 6-inch process gauges for reading at a distance.
- Driven by viewing distance and how precisely you need to read it. 2.5 inch and 3.5 inch for tight spaces and close reading. 4.5 inch and 6 inch are the most common sizes for general process work. 8.5 inch and larger for control room panels and viewing from a distance. Bigger dials make small needle movements easier to see, which translates to better resolution from the same accuracy class.
- Dry gauges have nothing in the case but air. Cheap, accurate when new, but the pointer bounces under any vibration or pulsation and the internal mechanism wears out fast in tough service. Liquid-filled (glycerin or silicone) gauges have the case filled with fluid that damps pointer vibration and lubricates the movement. The pointer sits still, the gauge lasts much longer, and the case shows less condensation. Liquid-filled is the default for any service that isn't dead-quiet.
- Accuracy class tells you how close to the true reading the gauge will get, expressed as a percent of the full scale. A 1% gauge on a 100 psi dial is good to within 1 psi at any point on the dial. Half-percent gauges are for process work where you need to trust the number. Quarter-percent and tighter is test-gauge territory, for calibrating other gauges. Don't pay for accuracy you don't need - most plant work is fine at 1%.

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About NISCO Inc.
NISCO offers a wide range of pressure gauges & instruments, diaphragm seals, thermometers, valves, and flow control products to the industrial and commercial marketplaces, as well as other resellers like ourselves. We can also provide other value-added services such as gauge repair, NIST traceable calibration, diaphragm seal assembly, and valve automation. NISCO takes pride in providing extensive product knowledge, helpful customer service, and market competitive pricing to help fit whatever need you may have because it is our goal to be regarded by our customers as the best supplier of pressure, temperature, and flow control products.






