Pressure Gauges banner

Differential Pressure Gauges

A reliable source for Pressure Gauge information and leading Pressure Gauge 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.
Request for Quote

Leading Manufacturers

West Valley City, UT  |  800-316-5342

The pressure gauges that we are able to manufacture will withstand the tests of time in order to provide a lasting value! We are dedicated to serving customers around the world with our products! It is our goal that we are able to offer products to our customers that fit their exact needs. To learn more about what we may be able to do for you; visit us online today!

Request A Quote

HydraCheck $$$

Cleveland, OH  |  216-281-1100

Meriam offers a wide variety of mechanical and digital pressure gauges for process measurement and indication. Terrific accuracy specifications and little-to-no temperature effect set these instruments apart from the competition. Many of our digital gauge products have multiple output options to increase their versatility in today’s changing control schemes.

Request A Quote

Meriam Process Technologies $$$

Branford, CT  |  203-481-2545

Differential Pressure Plus manufactures quality pressure gauges for air, gases, liquids and chemicals used in the filtration industry. Our digital or standard gauges are made of stainless steel, aluminum, ceramic, Teflon® and Buna. Check out our new Backflow Preventer Test Kit.

Request A Quote

Differential Pressure Plus, Inc. $$$

Fultonville, NY  |  800-833-0081

Anderson is a leading designer and manufacturer of high-quality pressure gauges, pressure switches and other transmitter instruments for the sanitary process of a variety of industries such as beverage, dairy, fluid food, biopharmaceutical. Call us today for more information about our products!

Request A Quote

Anderson-Negele $$$

Orlando, FL  |  800-394-8134

Bailey Motor Equipment Co. has been in the engine business since 1933. We are a distributor of quality products and specialize in carburetion of all types, engine protection, and instrumentation. We serve a lot of industries including the agriculture, industrial, oil and gas, and marine industries all over the world. Call us today for more information.

Request A Quote

Bailey Motor Equipment Co. $$$
placeholder image HydraCheck Meriam Process Technologies Differential Pressure Plus, Inc. Anderson-Negele Bailey Motor Equipment Co.

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.

Differential Pressure Gauges Informational Video