4 1⁄2 Inch Pressure Gauges | McMaster-Carr

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Connection Location

Dial Diameter

Pipe Size

For Use With

Hydraulic Fluid

Maximum Pressure

Less than 1,000 psi

1,000 psi to 1,999.9 psi

2,000 psi to 9,999.9 psi

10,000 psi to 19,999.9 psi

20,000 psi or greater

Less than 10,000 kPa

10,000 kPa to 19,999 kPa

20,000 kPa to 29,999 kPa

30,000 kPa to 99,999 kPa

100,000 kPa or greater

Pressure Numeric Increments

Dial Type

Scale Type

Measurement Unit

Inches of Mercury

Inches of Water

Ounces per Square Inch

Pounds per Square Inch

Thread Type

Graduations

Measures

Differential Pressure

Display Type

Connection Material

Stainless Steel

Gender

Case Material

Stainless Steel

Fitting Connection

Maximum Process Temperature

Lens Material

Connects To

RoHS

Compliant with Exemptions

Material

Stainless Steel

Accuracy Scale

REACH

Export Control Classification Number (ECCN)

DFARS Specialty Metals

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726 Products

Pressure and Vacuum Gauges

Pressure Gauges

Pressure Gauges

These are the most commonly used pressure gauges. Use them with pumps, filters, regulators, and in process lines to measure and display pressure.

High-Accuracy Low-Pressure Gauges

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Measure small pressure changes in ventilation systems, hydraulic applications, and other critical processes.

High-Accuracy Pressure Gauges for Pumps

High-Accuracy Pressure Gauges for Pumps

Keep tabs on liquid levels in pump and tank applications with these gauges—a dual scale displays pressure in feet of H₂O and psi.

High-Clarity Vibration-Resistant Pressure Gauges

High-Clarity Vibration-Resistant Pressure Gauges

These gauges have a unique case design that eliminates the air bubble on the dial face, which can distort readings. They have a liquid-filled dial that reduces needle flutter for precise readings in high-vibration applications.

Extreme Vibration-Resistant Pressure Gauges

Extreme Vibration-Resistant Pressure Gauges

Unlike other gauges that have multiple moving parts that can shake loose, these have only one internal part. They are the most shock-resistant gauges we offer.

High-Clarity Vibration- and
Corrosion-Resistant Pressure Gauges

High-Clarity Vibration- and Corrosion-Resistant Pressure Gauges

These gauges have a unique case design that eliminates the air bubble on the dial face, which can distort readings.

Extreme-Temperature Pressure Gauges

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These gauges can withstand both extremely cold and extremely hot temperatures.

Drinking Water Pressure Gauges

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Check the pressure on your drinking water system with these gauges—they meet NSF/ANSI Standard 61 for safe use with potable water.

Pressure and Vacuum Gauges

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Also known as compound gauges, these measure both pressure and vacuum.

Vacuum Gauges

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Use these gauges with vacuum pumps, packaging equipment, and in suction lines to measure and display vacuum.

Corrosion-Resistant Vacuum Gauges

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The case and connection threads are stainless steel for protection in corrosive environments.

High-Pressure Differential Gauges

High-Pressure Differential Gauges

Use in high-pressure applications up to 3,000 psi.

Medium-Pressure Differential Gauges

Medium-Pressure Differential Gauges

Use in medium-pressure applications up to 1,500 psi.

Pressure Testing

Test Gauges for Pressure

Test Gauges for Pressure

Test and calibrate transmitters, gauges, and other equipment that measures pressure.

Vibration-Resistant Test Gauges for Pressure

Vibration-Resistant Test Gauges for Pressure

These gauges have a glycerin-filled dial to reduce needle flutter for precise readings in high-vibration applications.

High-Accuracy Test Gauges for Pressure

High-Accuracy Test Gauges for Pressure

With an accuracy of ±0.25%, these gauges are designed for critical processes that require precision.

Corrosion-Resistant Test Gauges for Pressure

Corrosion-Resistant Test Gauges for Pressure

All-stainless steel construction makes these gauges suitable for testing and calibrating in corrosive environments.

Test Gauges for Vacuum

Test Gauges for Vacuum

Use these gauges to test and calibrate transmitters, gauges, and other equipment that measures vacuum.

The quick brown fox jumped over the lazy dog. Pedestal (35" Ht. x 4" Wd. x 4" Dp.)