Pressure Calibrators | McMaster-Carr

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	For Use With For Use With

Air

Hydraulic
Fluid

	Power Source Power Source

Manual

Battery

	Maximum Pressure Generated Maximum Pressure Generated

	Scale Scale

	Measures Measures

Differential Pressure

Pressure

Differential Vacuum

	Body Material Body Material

	Outlet Pipe Size Outlet Pipe Size

1/4

1/2

	Maximum Pressure Maximum Pressure

	Display Type Display Type


U-Tube	Digital

Inclined Scale

	Overall Width Overall Width

	Overall Depth Overall Depth

4 1/2"

6 5/8"

8 1/2"

	Maximum Pressure, in. of H2O Maximum Pressure, in. of H2O

	Overall Height Overall Height

	Resolution Resolution

0.01 psi

0.01 in. of H2O

0.1 in. of H2O

	Connection Type Connection Type


Tube	Pipe

	Maximum Pressure, psi Maximum Pressure, psi

	Connection Style Connection Style

Barbed

Compression

Threaded

	Reservoir Capacity Reservoir Capacity

1 1/5 gal.

3 1/5 gal.

8 oz.

	Connection Material Connection Material

Brass

Plastic

Stainless Steel

	Maximum Process Temperature Maximum Process Temperature

	Gender Gender

Male

Female

	Minimum Environment Temperature Minimum Environment Temperature

35° F

Not Rated

	Minimum Process Temperature Minimum Process Temperature

0° F

35° F

Not Rated

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41 Products

About Pressure Gauges

Manually pump air, water, or hydraulic fluid through your system so you can test fluid pressure in valves, hose, sprinkler lines, pipes, boilers, condensers, heat exchangers, pressure vessels, and other pumps. Pumps with pressure gauge can also be used for calibration. Pumps with exhaust valve vent air after use.

Styles D, E, and F have a reservoir to store test fluids.

Style G has a baseplate to provide leverage and stability while testing.

			Outlet			Overall
Style	For Use With	Max. Pressure Generated, psi	Pipe Size	Thread Type	Gender	Ht.	Wd.	Dp.	Features		Each
Portable Pumps
B	Air	30	1/4	NPT	Female	12 1/2"	6"	2"	Adjustable Pressure Control, Air Exhaust Valve, Pressure Gauge (±0.5% Accuracy), Swivel Gauge Fitting	00000000	0000000
B	Air	100	1/4	NPT	Female	12 1/2"	6"	2"	Adjustable Pressure Control, Air Exhaust Valve, Pressure Gauge (±0.5% Accuracy), Swivel Gauge Fitting	00000000	000000
B	Air	200	1/4	NPT	Female	12 1/2"	6"	2"	Adjustable Pressure Control, Air Exhaust Valve, Pressure Gauge (±0.5% Accuracy), Swivel Gauge Fitting	00000000	000000
D	Hydraulic Fluid	1,000	1/4	NPT	Female	14 1/4"	4 1/2"	4 1/2"	Adjustable Pressure Control, Pressure Gauge (±0.5% Accuracy), Swivel Gauge Fitting	00000000	000000
D	Hydraulic Fluid	2,000	1/4	NPT	Female	14 1/4"	4 1/2"	4 1/2"	Adjustable Pressure Control, Pressure Gauge (±0.5% Accuracy), Swivel Gauge Fitting	00000000	000000
D	Hydraulic Fluid	3,000	1/4	NPT	Female	14 1/4"	4 1/2"	4 1/2"	Adjustable Pressure Control, Pressure Gauge (±0.5% Accuracy), Swivel Gauge Fitting	00000000	000000
F	Hydraulic Fluid, Water	363	1/2	NPT	Female	6 1/8"	15"	8 1/2"	Pressure Gauge (±2.5% Accuracy)	000000	000000
F	Hydraulic Fluid, Water	860	1/2	NPT	Female	10 1/4"	28 1/2"	6 5/8"	Pressure Gauge (±2.5% Accuracy)	000000	000000
Portable Pumps with 3/4 GHT Female Inlet
G	Water	1,000	1/4	NPT	Female	9"	18"	7"	Pressure Gauge (±2% Accuracy), Baseplate	000000	000000

Low-Pressure Differential Gauges with Digital Display

Measure small changes in air pressure with these hand-held gauges. They have a four-digit LCD display for easy reading of measurements. Gauges are commonly used to indicate clogged filters and to monitor fans and blowers.

Aluminum Case with Nickel-Plated Brass Connection—(psi, bar)

For Use With: Air, Natural Gas
Accuracy: ±0.5% Full Scale (Not Graded)

Pressure Range
psi	bar	Resolution, psi	Max. Pressure, psi	For Tube ID	Environment Temp. Range, °F	Process Temp. Range, °F	Digit Ht.	Ht.	Wd.	Batteries Included	Environmental Rating		Each
Barbed Tube Connection
0-30	0-2.069	0.01	60	1/8"-3/16"	35° to 100°	0° to 140°	3/8"	6 1/2"	2 13/16"	Yes	NEC Class I Division 2 Groups A, B, C, D	0000000	0000000
Barbed Tube Connection with Calibration Certificate Traceable to NIST
0-30	0-2.069	0.01	60	1/8"-3/16"	35° to 100°	0° to 140°	3/8"	6 1/2"	2 13/16"	Yes	NEC Class I Division 2 Groups A, B, C, D	0000000	000000

Optional Nylon Carrying Case

0000000

Each

000000

Aluminum Case with Nickel-Plated Brass Connection—(kPa, in. of H₂O)

For Use With: Air, Natural Gas
Accuracy: ±0.5% Full Scale (Not Graded)

Pressure Range
kPa	in. of H₂O	Resolution, in. of H₂O	Max. Pressure, psi	For Tube ID	Environment Temp. Range, °F	Process Temp. Range, °F	Digit Ht.	Ht.	Wd.	Batteries Included	Environmental Rating		Each
Barbed Tube Connection
0-4.982	0-20	0.01	10	1/8"-3/16"	35° to 100°	0° to 140°	3/8"	6 1/2"	2 13/16"	Yes	NEC Class I Division 2 Groups A, B, C, D	0000000	0000000
0-49.82	0-200	0.1	30	1/8"-3/16"	35° to 100°	0° to 140°	3/8"	6 1/2"	2 13/16"	Yes	NEC Class I Division 2 Groups A, B, C, D	0000000	000000
Barbed Tube Connection with Calibration Certificate Traceable to NIST
0-4.982	0-20	0.01	10	1/8"-3/16"	35° to 100°	0° to 140°	3/8"	6 1/2"	2 13/16"	Yes	NEC Class I Division 2 Groups A, B, C, D	0000000	000000
0-49.82	0-200	0.1	30	1/8"-3/16"	35° to 100°	0° to 140°	3/8"	6 1/2"	2 13/16"	Yes	NEC Class I Division 2 Groups A, B, C, D	0000000	000000

Optional Nylon Carrying Case

0000000

Each

000000

Low-Pressure Differential Gauges with U-Tube

Also known as manometers, these gauges come with indicating liquid that moves up and down two columns—the difference in height between them is your pressure. They are commonly used to indicate clogged filters.

Magnet-mount gauges can be moved for use in multiple locations. Gauges with barbed tube connection have a flexible body that rolls up for storage or transport.

316 Stainless Steel Connection—(in. of H₂O)

For Use With: Acetylene, Air, Argon, Carbon Dioxide, and Steam
Accuracy: Not Rated (Not Graded)

						Environment Temp. Range		Process Temp. Range				Mounting
Pressure Range, in. of H₂O	Scale Range, in. of H₂O	Numeric Increments, in. of H₂O	Graduation Marks, in. of H₂O	Max. Pressure, psi	Ht.	Min., °F	Max., °F	Min., °F	Max., °F	Gender	Mount Type	Fasteners Included	Hole Dia.	Number of Holes		Each
With 1/4 NPT Female Threaded Pipe Connection
0-10	5-0-5	1	0.1	250	14"	35°	150°	35°	250°	Female	Screw On	No	3/16"	4	0000000	0000000
0-15	7-0-7	1	0.1	250	18"	35°	150°	35°	250°	Female	Screw On	No	3/16"	4	0000000	000000

Nylon Plastic Connection—(in. of H₂O)

For Use With: Air, Argon, Carbon Dioxide, and Hydrogen
Accuracy: Not Rated (Not Graded)

With Barbed Tube Connection for 3/16" Tube ID
Pressure Range, in. of H₂O	Scale Range, in. of H₂O	Numeric Increments, in. of H₂O	Graduation Marks, in. of H₂O	Max. Pressure	Ht.	Max. Process Temp., °F	Gender	Mount Type		Each
0-8	4-0-4	1	0.1	Not Rated	17"	130°	Male	Magnet	0000000	000000
0-12	6-0-6	1	0.1	Not Rated	21"	130°	Male	Magnet	0000000	000000
0-16	8-0-8	1	0.1	Not Rated	25"	130°	Male	Magnet	0000000	000000
0-24	12-0-12	1	0.1	Not Rated	33"	130°	Male	Magnet	0000000	000000
0-30	15-0-15	1	0.1	Not Rated	39"	130°	Male	Magnet	0000000	000000
0-36	18-0-18	1	0.1	Not Rated	45"	130°	Male	Magnet	0000000	000000
0-48	24-0-24	1	0.1	Not Rated	57"	130°	Male	Magnet	0000000	000000
0-60	30-0-30	1	0.1	Not Rated	69"	130°	Male	Magnet	0000000	000000
0-72	36-0-36	1	0.1	Not Rated	81"	130°	Male	Magnet	0000000	000000

Brass Connection—(in. of H₂O)

For Use With: Air, Argon, Carbon Dioxide, and Hydrogen
Accuracy: Not Rated (Not Graded)

With Compression Tube Connection for 1/4" Tube OD
Pressure Range, in. of H₂O	Scale Range, in. of H₂O	Numeric Increments, in. of H₂O	Graduation Marks, in. of H₂O	Max. Pressure, psi	Ht.	Gender	Mount Type		Each
0-8	4-0-4	1	0.1	100	20"	Female	Magnet	0000000	0000000
0-12	6-0-6	1	0.1	100	25"	Female	Magnet	0000000	000000
0-16	8-0-8	1	0.1	100	30"	Female	Magnet	0000000	000000
0-20	10-0-10	1	0.1	100	34"	Female	Magnet	0000000	000000
0-24	12-0-12	1	0.1	100	39"	Female	Magnet	0000000	000000
0-36	18-0-18	1	0.1	100	58"	Female	Magnet	0000000	000000

Low-Pressure Differential Gauges with Inclined Scale

Easier to read than U-tube gauges, these use an inclined scale to measure pressure or velocity in air applications. Gauges are also known as manometers.

Polycarbonate Plastic Connection—(in. of H₂O)

For Use With: Air
Accuracy: ±3% Full Scale (Not Graded)

				Indicating Liquid
Pressure Range, in. of H₂O	Max. Pressure, psi	Max. Process Temp. Range, °F	Ht.	Color	Specific Gravity	Mount Type	Mounting Fasteners Included	Includes		Each
With Barbed Tube Connection for 3/16" Tube ID
0-3	10	140°	6"	Red	0.826	Screw On	Yes	8-ft. Lg. Tubing; Indicating Liquid	000000	000000
0-7	10	140°	6"	Blue	1.91	Screw On	Yes	8-ft. Lg. Tubing; Indicating Liquid	000000	000000

Differential Pressure and Vacuum
Gauges with Digital Display

Gauges have a four-digit LCD display for easy reading of measurements. Commonly used to indicate clogged filters, these gauges display the difference between two pressure or vacuum measurements. They are also known as compound gauges.

Aluminum Case with Brass Connection—(psi, kPa, in. of H₂O, in. of Hg, mbar)

For Use With: Air
Accuracy: ±0.5% Full Scale (Not Graded)

Pressure Range
psi	kPa	in. of H₂O	mbar	Vacuum Range, in. of Hg	Resolution, in. of H₂O	Max. Pressure, psi	For Tube ID	Environment Temp. Range, °F	Process Temp. Range, °F	Digit Ht.	Batteries Included	Features		Each
Barbed Tube Connection
0-0.723	0-4.982	0-20"	0-49.82	1.471"-0	0.01	10	1/8"-3/16"	35° to 100°	0° to 140°	3/8"	Yes	40-Reading Memory, Overpressure Alarm	0000000	0000000
0-7.225	0-49.82	0-200"	0-498.2	14.71"-0	0.1	30	1/8"-3/16"	35° to 100°	0° to 140°	3/8"	Yes	40-Reading Memory, Overpressure Alarm	0000000	000000
0-20	0-137.9	0-553"	0-1,379	40.72"-0	0.01	60	1/8"-3/16"	35° to 100°	0° to 140°	3/8"	Yes	40-Reading Memory, Overpressure Alarm	0000000	000000
Barbed Tube Connection with Calibration Certificate Traceable to NIST
0-0.723	0-4.982	0-20"	0-49.82	1.471"-0	0.01	10	1/8"-3/16"	35° to 100°	0° to 140°	3/8"	Yes	40-Reading Memory, Overpressure Alarm	0000000	000000
0-7.225	0-49.82	0-200"	0-498.2	14.71"-0	0.1	30	1/8"-3/16"	35° to 100°	0° to 140°	3/8"	Yes	40-Reading Memory, Overpressure Alarm	0000000	000000
0-20	0-137.9	0-553"	0-1,379	40.72"-0	0.01	60	1/8"-3/16"	35° to 100°	0° to 140°	3/8"	Yes	40-Reading Memory, Overpressure Alarm	0000000	000000

Terms and Conditions and Privacy Policy

About Pressure Gauges

Manual Pumps for Testing and Calibration

Low-Pressure Differential Gauges with Digital Display

Low-Pressure Differential Gauges with U-Tube

Low-Pressure Differential Gauges with Inclined Scale

Differential Pressure and VacuumGauges with Digital Display

Differential Pressure and Vacuum
Gauges with Digital Display