Gas Pressure Gauge

A reliable source for Pressure Gauge information and leading Pressure Gauge Companies & Manufacturers.

Display types include graphical and video displays, digital readouts or analog meters and needles. Read More…

Gas Pressure Gauge A gas pressure gauge is an instrument designed to measure and display the pressure of a gas. Pressure gauges assess the pressure of fuel, oil, water, air and vacuums and indicate the results on a screen or on a dial.

Leading Manufacturers

West Valley City, UT  |  800-316-5342

HydraCheck offers everything needed to service, maintain and troubleshoot hydraulic systems at prices you can afford. We manufacture and distribute diagnostic test kits, flow meters, pressure gauges, tachometers, etc. Our inline flow meters monitor pump performance and media flows in hydraulic systems.

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HydraCheck $$$

Waukesha, WI  |  800-686-1789

Thuemling Instrument Group provides you with SPAN pressure gauges, liquid filled pressure gauges, duplex gauges and stainless steel gauges. Different types and sizes are available to suit just about any industrial purpose. We also offer transmitters and pressure switches. Check our website for more info.

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Thuemling Instrument Group, Inc. $$$

Toronto, ON  |  800-946-8377

Winters Instruments is a global instrumentation manufacturer of products such as high and low pressure gauges, differential pressure gauges and much, much more. We cover all markets including wastewater, petrochemical, HVAC, plumbing, food & beverage as well as many others. Our pressure gauges and thermometers have a 5-year warranty, while all other products carry a standard 1-year warranty.

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Winters Instruments $$$

Stratford, CT  |  203-378-8281

Ashcroft’s extensive product line is the benchmark in pressure and temperature measurement, including pressure gauges. Used globally in the most demanding environments, our instruments are known under the names Ashcroft®, Heise®, Willy® and Weksler® and offer multi-industry versatility. As a leader in technology and innovation, we design new products for current and emerging market requirements.

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Ashcroft® Inc. $$$
placeholder image HydraCheck Thuemling Instrument Group, Inc. Winters Instruments Ashcroft® Inc.

Gas pressure gauges indicate the internal pressure of whole systems or individual vessels and are essential for applications where the accurate function of a system or vessel depends directly on the correct pressure as determined through gauges. Gas pressure gauges are constructed of stainless steel, bronze, brass and aluminum. The internal components are held inside a metal housing and the viewing window is made from double-strength glass. Some gauges require rubber or plastic seals, plugs or rods.

Pressure gauges are a type of sensor and are usually combined with other instruments or devices such as shutoff valves, couplings or fittings. Pressure gauges can also be equipped with electric contacts to turn on signal lights, sound alarms or operate a pump or valve. Gas pressure gauges vary in style, size and material, depending on the application; they are widely used, especially by manufacturing plants or industrial companies where it is important to monitor any changes in pressure in order to control the rate of flow of gases such as propane or natural gas.

There are two main kinds of gauges: hydrostatic and aneroid. Hydrostatic pressure gauges use liquid to compare pressure to the pressure exerted by the force of gravity on a fluid at equilibrium. These measurements are independent of the type of gas that is being measured, and they have poor dynamic response, so they are not generally used for gas. The majority of gas pressure gauges are aneroid. Aneroid pressure gauges use a flexible metal membrane that bends, curls or twists according to the pressure being exerted.

Aneroid gauges are able to evaluate both liquid and gas pressure and do not need to use any liquid to do so. Within this category are Bourdon tubes and diaphragm gauges, both of which use bellows. A C-shaped or coiled tube in the Bourdon gauge is connected to the system or vessel where the pressure must be read. The tubes coil and uncoil depending on a decrease or increase in pressure.

A diaphragm gauge uses a membrane sealed in between two regions of varying pressure. The membrane flexes or deflects and the deformation is measured as the pressure. Even the slightest bend in the bellows or membrane is detected by the pressure sensing element and transmitted to the display.