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Differential Pressure Gauges

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

They indicate the internal pressure within vessels or systems and are used particularly for environments where the pressure changes frequently, therefore requiring constant monitoring. Read More…

Differential Pressure Gauges Differential pressure gauges are instruments used to measure the difference in pressure of a gas or liquid between two points. Pressure gauges are used to measure fuel, oil, water, air and vacuums.
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Leading Manufacturers

Milford, CT  |  800-989-5657

We manufacture several different types of differential pressure gauges and instruments—compound range differential, piston- and diaphragm-type differential, explosion-proof and miniature. When you want a single-gauge dial to measure your pressure difference, contact us.

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Orange Research Incorporated $$$

Minden, NV  |  775-782-1026

Looking for quality pressure gauges to measure a gas or liquid pressure? Perma-Cal Industries, Inc manufactures a comprehensive line of affordable high quality pressure gauges for a variety of demanding commercial and industrial applications. All Perma-Cal Industries pressure gauges are manufactured with dependability, safety and affordability in mind. Call us today!

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Perma-Cal® Industries, Inc. $$$

Sturtevant, WI  |  262-886-2895

SIKA USA is a developer and manufacturer of pressure gauges and a wide variety of other measuring and monitoring systems. We offer both standard pressure gauges and bourdon tube pressure gauges. Our pressure gauges are made with high-quality materials meant to withstand their environments and read accurately every time. Our pressure gauges are EN 837-1 compliant and are encased in stainless steel. They also come in different sizes, so finding one to fit your needs is simple.

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SIKA USA $$$

Lake Villa, IL  |  800-876-0036

M & M Control Service, Inc. is a leading distributor of industrial pneumatic, electronic, and self-contained valves, controls and controllers, instrumentation, temperature regulators, and process control loop equipment products and process solutions. We represent the top manufacturers in the industry. We bring you the best products at the best prices, delivered from stock or direct from the factories. We aim to exceed our customers' expectations, with continuously improved service, quality products, competitive prices and the fastest delivery. Our personal service staff is the best in the business and is committed to ensuring that your needs are met. Our commitment to quality products and exceptional customer service is renowned in the industry. M&M Control's sales engineers are factory trained to provide you with sizing, application, configuration, or installation assistance. For help with your application and for additional information on valves and steam products, gauges and thermometers, regulators, and controls and instrumentation call M&M Control at 1-800-876-0036. Visit our Web site at www.mmcontrol.com or E-mail sales@mmcontrol.com.

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M & M Control Service Inc. $$$
placeholder image Orange Research Incorporated Perma-Cal® Industries, Inc. SIKA USA M & M Control Service Inc.

A differential pressure gauge's components are housed in a metal enclosure; materials include stainless steel, cast iron, bronze, brass and aluminum. The windows are usually double-strength glass. Specific pressure gauges have additional materials such as plastic or rubber. Differential liquid pressure gauges are themselves filled with certain liquids including oil, glycerin and silicone. Pressure gauges are often used in tandem with protective accessories like shutoff valves.

Other accessories include pipe coils, chemical seals and secondary valves to minimize condensation and to allow calibration against an external pressure source such as atmospheric pressure. Differential pressure gauges have two inlet ports that monitor the pressure in two separate vessels. These pressure gauges are used in applications where it is important to take two measurements and compare them, determining which vessel or system has the highest flow velocity, for example. Differential pressure gauges are utilized by manufacturing and industrial plants and companies.

Differential pressure gauges perform subtraction in order to indicate the difference between the two readings. This eliminates the need for an operator or computer system to watch two gauges and perform the math. It is fast and efficient to have the information immediately and constantly displayed in one location. There are three main types of differential pressure gauges: Bourdon, diaphragm and piston. The Bourdon gauge has two C-shaped or coiled tubes connected to the chambers or pipes where the pressures must be read.

When pressure increases, the tubes uncoil. The motion of the two tubes is registered and a mechanical linkage compares the readings. Diaphragm gauges use two hermetically sealed membranes that flex in accordance with the pressure. The ports of the membranes are open to each other to compare pressures.

Piston type differential pressure gauges are also called deadweight testers because they counterbalance the pressure of a fluid with a solid weight or spring. As is the case with all three kinds, the difference is measured by a sensor and indicated on the gauge. The results may be displayed as analog, such as a needle on a dial, or they may be digital with numbers on a LED panel.

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