5 PSI Gauges | McMaster-Carr

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41 Products

About Pipe Size

About Pressure Gauges

Single Scale With Bottom Connection

Single Scale With Center Back Connection

Dual Scale With Bottom Connection (Flange Mount)

Bottom Connection

Center Back Connection

Bottom Connection (Flange Mount)

Measure small pressure changes in ventilation systems, hydraulic applications, and other critical processes with these high-accuracy gauges. Mount them with the dial face upright.

Gauges with 304 stainless steel case or polyester plastic case have better corrosion resistance than gauges with steel case.

Gauges with safety case blow out in the back under excess pressure, protecting the operator in front.

For technical drawings and 3-D models, click on a part number.

Painted Steel Case with Brass Connection—Single Scale (psi)

For Use With: Air, Water, Hydraulic Fluid, Carbon Dioxide, and Natural Gas
Accuracy: ±1.5% Full Scale (Not Graded)

Available Pressure Gauges
Pressure Range, psi	Graduation Marks, psi	Numeric Increments, psi
0 to 5	0.1	1

						Bottom Connection		Center Back Connection
Dial Diameter	Pipe Size	Environment Temp. Range, °F	Process Temp. Range, °F	Case Color	Mounting Orientation		Each		Each
NPT Male
2 1/2"	1/4	0° to 140°	0° to 140°	Black	Upright	0000000	000000	0000000	000000
NPT Male with Calibration Certificate Traceable to NIST
2 1/2"	1/4	0° to 140°	0° to 140°	Black	Upright	0000000	000000	0000000	000000

304 Stainless Steel Case with Brass Connection—Single Scale (psi)

For Use With: Air, Water, Hydraulic Fluid, Carbon Dioxide, and Natural Gas
Accuracy: ±1% Full Scale (Grade 1A)

Available Pressure Gauges
Pressure Range, psi	Graduation Marks, psi	Numeric Increments, psi
0 to 5	0.1	1

					Bottom Connection
Dial Diameter	Pipe Size	Environment Temp. Range, °F	Process Temp. Range, °F	Mounting Orientation		Each
NPT Male
4"	1/4	0° to 140°	0° to 140°	Upright	000000	0000000

Polyester Plastic Case with Brass Connection—Dual Scale (psi, in. of Hg)

For Use With: Air, Argon, Nitrogen, and Natural Gas
Accuracy: ±1% Mid Scale (Grade A)

Available Pressure Ranges
Pressure Range		Graduation Marks		Numeric Increments
psi	in. of Hg	psi	in. of Hg	psi	in. of Hg
0 to 5	0 to 10	0.05	0.1	0.5	1

					Mounting					Bottom Connection (Flange Mount)
Dial Diameter	Pipe Size	Environment Temp. Range, °F	Process Temp. Range, °F	Case Color	Orientation	Fasteners Included	Hole Dia.	No. of Holes	Features		Each
NPT Male
4 1/2"	1/4	0° to 140°	-40° to 210°	Black	Upright	No	1/4"	3	Safety Case	000000	0000000

Digital High-Accuracy Pressure Gauges

ABS Plastic Case
With Bottom
Connection

Bottom Connection

A four-digit LCD display allows for easy reading of measurements. The LCD shuts off automatically to extend battery life. Gauges are commonly used with pneumatic regulators, compressors, and in critical processes that require high accuracy, such as hydraulic and laboratory applications.

For technical drawings and 3-D models, click on a part number.

ABS Plastic Case with 316 Stainless Steel Connection—(psi, bar, MPa)

For Use With: Air, Water, Hydraulic Fluid, Gasoline, Diesel Fuel, Natural Gas
Accuracy: ±1% Full Scale (Not Graded)

Available Pressure Ranges
Pressure Range
psi	bar	MPa	Resolution, psi
0 to 5	0 to 0.34	0 to 0.03	0.001

							Bottom Connection
Dial Diameter	Pipe Size	Environment Temp. Range, °F	Process Temp. Range, °F	Batteries Included	Mounting Orientation	Features		Each
NPT Male
2 1/2"	1/4	0° to 185°	15° to 140°	Yes	Any	3-min. Automatic Shut-Off, Maximum Reading Recall	00000000	0000000
NPT Male Calibration Certificate Traceable to NIST
2 1/2"	1/4	0° to 185°	15° to 140°	Yes	Any	3-min. Automatic Shut-Off, Maximum Reading Recall	00000000	000000

Low-Pressure Differential Gauges with Color Indicator

A band of green, yellow, and red provides a clear indication of changes in differential pressure. Gauges are commonly used to indicate clogged filters.

For technical drawings and 3-D models, click on a part number.

Low-Pressure Differential Gauges with Color Indicator

For Use With: Air, Water, Hydraulic Fluid, Carbon Dioxide, Nitrogen, Hydrogen, Argon, and Acetylene
Accuracy: ±5% Full Scale (Not Graded)

	Pressure Range, psi
Pipe Size	Green Band	Yellow Band	Red Band	Max. Pressure, psi	Environment Temp. Range, °F	Process Temp. Range, °F	Ht.	Wd.	Dp.	Case Color		Each
NPT Female
1/4	0-3	3-4.5	4.5-5	300	-40° to 200°	-40° to 200°	3 1/4"	3 1/4"	1 1/2"	Black	0000000	0000000

Medium-Pressure Differential Gauges

Popular for use with natural gas, these gauges measure pressure differences in pipelines and filters with a maximum pressure of 1,500 psi.

Gauges with 316 stainless steel case are more corrosion resistant than gauges with an aluminum case.

For technical drawings and 3-D models, click on a part number.

Aluminum Case with Aluminum Connection—Single Scale (psi)

For Use With: Water, Hydraulic Fluid, Gasoline, and Natural Gas
Accuracy: ±2% Full Scale (Not Graded)

Available Pressure Ranges
Pressure Range, psi	Graduation Marks, psi	Numeric Increments, psi
0 to 5	0.25	1

NPT Female
Dial Diameter	Pipe Size	Max. Pressure, psi	Environment Temp. Range, °F	Process Temp. Range, °F		Each
2 1/2"	1/4	1,500	0° to 150°	0° to 200°	000000	0000000
4 1/2"	1/4	1,500	0° to 150°	0° to 200°	000000	000000

316 Stainless Steel Case with 316 Stainless Steel Connection—Single Scale (psi)

For Use With: Water, Hydraulic Fluid, Gasoline, and Natural Gas
Accuracy: ±2% Full Scale (Not Graded)

Available Pressure Ranges
Pressure Range, psi	Graduation Marks, psi	Numeric Increments, psi
0 to 5	0.25	1

NPT Female
Dial Diameter	Pipe Size	Max. Pressure, psi	Environment Temp. Range, °F	Process Temp. Range, °F		Each
2 1/2"	1/4	1,500	0° to 150°	0° to 200°	000000	0000000
4 1/2"	1/4	1,500	0° to 150°	0° to 200°	000000	000000

High-Accuracy Digital Test Gauges for Pressure

Battery Powered

AC/DC and DC Powered

Bottom Connection

Not only do these gauges have an accuracy of ±0.25%, they also have a four-digit LCD display that allows for easy reading of measurements. Use them for testing, calibrating, laboratory applications, and other critical applications that require precision.

Gauges with 4-20mA current output convert pressure to an electrical signal for remote monitoring.

For technical drawings and 3-D models, click on a part number.

Aluminum Case with 316 Stainless Steel Connection—Battery Powered

For Use With: Air, Diesel Fuel, Gasoline, Hydraulic Fluid, Natural Gas, Water
Accuracy: ±0.25% Full Scale (Not Graded)

Available Pressure Ranges
Pressure Range
psi	bar	MPa	Resolution, psi
0 to 5	0 to 1	0 to 1.4	0.01

Dial									Bottom Connection
Ht.	Wd.	Pipe Size	Environment Temperature Range, °F	Process Temperature Range, °F	Environment	Features	Digit Ht.	Batteries Included		Each
NPT Male
2 7/8"	3 3/8"	1/4	0° to 185°	-40° to 200°	__	5-min. Automatic Shut-Off	1/2"	Yes	0000000	0000000
2 7/8"	3 3/8"	1/4	0° to 185°	-40° to 200°	Hazardous Location	5-min. Automatic Shut-Off	1/2"	Yes	0000000	000000
NPT Male—Calibration Certificate Traceable to NIST
2 7/8"	3 3/8"	1/4	0° to 185°	-40° to 200°	__	5-min. Automatic Shut-Off	1/2"	Yes	0000000	000000
2 7/8"	3 3/8"	1/4	0° to 185°	-40° to 200°	Hazardous Location	5-min. Automatic Shut-Off	1/2"	Yes	0000000	000000

Aluminum Case with 316 Stainless Steel Connection—AC/DC Powered

For Use With: Air, Diesel Fuel, Gasoline, Hydraulic Fluid, Natural Gas, Water
Accuracy: ±0.25% Full Scale (Not Graded)

Available Pressure Ranges
Pressure Range
psi	bar	MPa	Resolution, psi
0 to 5	0 to 1	0 to 1.4	0.01

Dial								Bottom Connection
Ht.	Wd.	Pipe Size	Environment Temperature Range, °F	Process Temperature Range, °F	Digit Ht.	Wire Connection Type	Input Voltage		Each
NPT Male
2 7/8"	3 3/8"	1/4	0° to 185°	-40° to 200°	1/2"	Wire Leads	8-24V AC, 9-32V DC	0000000	0000000
NPT Male—Calibration Certificate Traceable to NIST
2 7/8"	3 3/8"	1/4	0° to 185°	-40° to 200°	1/2"	Wire Leads	8-24V AC, 9-32V DC	0000000	000000

Powder-Coated Aluminum Case with 316 Stainless Steel Connection—DC Powered with 4-20mA Output Current

For Use With: Air, Diesel Fuel, Gasoline, Hydraulic Fluid, Natural Gas, Water
Accuracy: ±0.25% Full Scale (Not Graded)

Available Pressure Ranges
Pressure Range, psi	Resolution, psi
0 to 5	0.01

Dial									Bottom Connection
Ht.	Wd.	Pipe Size	Environment Temperature Range, °F	Process Temperature Range, °F	Case Color	Digit Ht.	Wire Connection Type	Input Voltage		Each
NPT Male
2 7/8"	3 3/8"	1/4	0° to 185°	-40° to 200°	Blue, White	1/2"	Wire Leads	8-32V DC	0000000	0000000
NPT Male—Calibration Certificate Traceable to NIST
2 7/8"	3 3/8"	1/4	0° to 185°	-40° to 200°	Blue, White	1/2"	Wire Leads	8-32V DC	0000000	000000

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About Pipe Size

About Pressure Gauges

High-Accuracy Low-Pressure Gauges

Digital High-Accuracy Pressure Gauges

Low-Pressure Differential Gauges with Color Indicator

Medium-Pressure Differential Gauges

High-Accuracy Digital Test Gauges for Pressure