75 psi Pressure Gauges | McMaster-Carr

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For Use With

Liquid Carbon Dioxide

Connection Location

Pipe Size

Measures

Stem Length

Measurement Unit

Pounds per Square Inch

Maximum Display Temperature

320° F

160° C

Display Type

Dial

Maximum Process Temperature

Thread Type

Maximum Pressure

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

Not Rated

Scale Type

Dual

Dial Type

Dry

Maximum Environment Temperature

140° F

150° F

Minimum Display Temperature

Dial Diameter

Mounting Position

Gender

Minimum Temperature

Maximum Temperature

Pressure Numeric Increments

Fitting Connection

REACH

RoHS

Compliant with Exemptions

Not Compliant

Export Control Classification Number (ECCN)

2B999

EAR99

DFARS Specialty Metals

Exempt

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49 Products

About Pipe Size

About Pressure Gauges

About Pressure Transmitters

Center Back Connection

Designed for use with boilers, these gauges have a dual scale that displays pressure in psi and feet of H₂O and displays temperature in °F/°C.

Painted Steel Case with Brass Connection—Dual Scale (psi/ft. of H₂O, Fahrenheit/Celsius)

For Use With: Steam and Water
Accuracy: ±2.5% Full Scale (Grade B)

Available Pressure Ranges
Pressure Range		Graduation Marks		Numeric Increments
psi	ft. of H₂O	psi	ft. of H₂O	psi	ft. of H₂O
2 1/2" Dial Dia.
0 to 75	0 to 170	5	10	20	50

		Display Temp. Range								Center Back Connection
Dial Diameter	Pipe Size	°F	°C	Environment Temp. Range, °F	Process Temp. Range, °F	Case Color	Mounting Orientation	Stem Lg.	Shoulder Lg.		Each
NPT Male
2 1/2"	1/4	70° to 320°	20° to 160°	-40° to 140°	70° to 320°	Black	Any	1"	__	0000000	000000
2 1/2"	1/4	70° to 320°	20° to 160°	-40° to 140°	70° to 320°	Black	Any	1"	2"	0000000	00000
2 1/2"	1/4	70° to 320°	20° to 160°	-40° to 140°	70° to 320°	Black	Any	1 1/2"	2"	0000000	00000

Pressure and Vacuum Gauges

Dual Scale With Bottom Connection

Dual Scale With Center Back Connection

Dual Scale With Center
Back Connection
(Panel Mount)

Bottom Connection

Center Back Connection

Center Back Connection (Panel Mount)

Also known as compound gauges, these measure both pressure and vacuum. Use them with pumps, filters, regulators, compressors, and in suction and process lines.

Gauges with steel case are more impact resistant than gauges with ABS plastic case.

Steel Case with Brass Connection—Dual Scale (psi/in. of Hg, kPa)

For Use With: Air
Accuracy: ±2% Mid Scale (Grade B)

Available Pressure and Vacuum Ranges
Pressure Range		Vacuum Range		Graduation Marks			Numeric Increments
psi	kPa	in. of Hg	kPa	psi	kPa	in. of Hg	psi	kPa	in. of Hg
0 to 75	0 to 500	30 to 0	0 to -100	5	20	2	10	100	10

Bottom Connection

NPT Male
Dial Diameter	Pipe Size	Environment Temp. Range, °F	Process Temp. Range, °F		Each
2"	1/4	-40° to 150°	-40° to 150°	0000000	000000
2 1/2"	1/4	-40° to 150°	-40° to 150°	0000000	00000
3 1/2"	1/4	-40° to 150°	-40° to 150°	0000000	00000
4 1/2"	1/4	-40° to 150°	-40° to 150°	0000000	00000

Center Back Connection

NPT Male
Dial Diameter	Pipe Size	Environment Temp. Range, °F	Process Temp. Range, °F		Each
2"	1/4	-40° to 150°	-40° to 150°	0000000	000000
2 1/2"	1/4	-40° to 150°	-40° to 150°	0000000	00000
3 1/2"	1/4	-40° to 150°	-40° to 150°	0000000	00000

Center Back Connection (Panel Mount)

NPT Male
Dial Diameter	Pipe Size	Environment Temp. Range, °F	Process Temp. Range, °F	For Panel Cutout Dia.		Each
2"	1/4	-40° to 150°	-40° to 150°	2 7/32"	0000000	000000
2 1/2"	1/4	-40° to 150°	-40° to 150°	2 3/4"	0000000	00000
3 1/2"	1/4	-40° to 150°	-40° to 150°	3 13/16"	0000000	00000

Economy Pressure Transmitters

For Use With: Air, Argon, Diesel Fuel, Hydraulic Fluid, Nitrogen, Water
Accuracy: ±1.5%
Pipe Connection: NPT Male
Housing Material: 304 Stainless Steel
Connection Material: 304 Stainless Steel
Temperature Range: -20° to 220° F

Choose these transmitters when you need reliable pressure monitoring but not high accuracy. Also known as transducers, they convert pressure to an electrical signal that can be interpreted by receiving devices, such as remote displays, programmable logic controllers, and motor speed controls. For your receiving device to interpret the signal from the transmitter, you will need to calibrate it for the transmitter's pressure range and output signal. As pressure increases, the output signal from the transmitter will increase. Transmitters will only provide accurate readings within the rated pressure range.

Rated IP65, all seal out dust and water from light rinses. They’re CE marked, so they meet European safety standards.

These transmitters connect using two wires to send a 4-20mA current output. The same wire is used to send a signal to the receiver and to power the transmitter. Current doesn’t lose signal over long distances and isn’t affected by electrical interference from other devices.

4-20mA Current Output—Wire Leads
Pressure Range, psi	Maximum Continuous Pressure, psi	Maximum Short-Term Pressure, psi	Input Voltage	Pipe Size	Ht.	Wd.	Environmental Rating		Each
0-50	50	75	12-36V DC	1/4	1 13/16"	15/16"	IP65	0000000	0000000

Absolute Pressure Transmitters

Monitor and control pressure in portable HVAC systems, hydraulics, and oil and gas equipment. Unlike other pressure transmitters that measure the difference between your system and the atmosphere, these transmitters give measurements relative to zero pressure—regardless of altitude or temperature. Also known as transducers, they convert pressure into an electrical signal that can be interpreted by receiving devices, such as remote displays, programmable logic controllers (PLCs), and motor speed controls. For your receiving device to interpret the signal from the transmitter, you will need to calibrate it for the transmitter's pressure range and output signal. Transmitters will only provide accurate readings within the rated pressure range.

All transmitters are rated IP67 for protection from dust and temporary submersion during washdowns.

Transmitters with voltage output connect using three wires—two wires into the power supply and a separate wire that sends a signal to the receiver. The receiver and the transmitter share a common ground wire back to the power supply.

0-5V DC Voltage Output—Aptiv MP-150 Plug Connection

For Use With: Air, Argon, Diesel Fuel, Gasoline, Hydraulic Fluid, Nitrogen, Water
Accuracy: ±1.2%
Pipe Connection: NPT Female
Housing Material: Glass-Reinforced Polyester
Connection Material: Brass
Temperature Range: -40° to 275° F

Pressure Range, psi	Maximum Continuous Pressure, psi	Maximum Short-Term Pressure, psi	Input Voltage	Pipe Size	Ht.	Wd.	Environmental Rating		Each
0-75	360	1,595	4.5-5.5V DC	1/4	1 15/16"	13/16"	IP67	0000000	000000

Vibration-Damping Pressure-Regulating
Valves for Water, Oil, Air, and Inert Gas

For Use With: Water, Oil, Air, Inert Gas
Temperature Range: See Table

A cast iron body absorbs vibration from pressure changes to reduce wear and noise in your pipeline. These valves automatically reduce a high, variable inlet pressure to a lower, stable outlet pressure. Adjust the outlet pressure within the range.

Internal strainers trap debris.

Inlet			Outlet
Pipe Size	Location	Max. Pressure, psi	Pipe Size	Location	Temperature Range	End-to-End Lg.	Outlet Pressure Range, psi		Each
NPT Female
Cast Iron Body—Buna-N Diaphragm and Seal with Internal Strainer
3/4	Side	200	3/4	Side	32° to 180° F	5 1/8"	30 to 75	0000000	0000000

Corrosion-Resistant Pressure-Regulating
Valves for Water, Oil, Air, and Inert Gas

For Use With: Water, Oil, Air, Inert Gas
Temperature Range: 32° to 200° F

Often used in wet conditions and harsh environments, these valves have a 316 stainless steel body for excellent corrosion resistance. They automatically reduce a high, variable inlet pressure to a lower, stable outlet pressure. Adjust the outlet pressure within the range.

Inlet			Outlet
Pipe Size	Location	Max. Pressure, psi	Pipe Size	Location	End-to-End Lg.	Outlet Pressure Range, psi		Each
NPT Female
316 Stainless Steel Body—Buna-N Diaphragm and Seal
3/4	Side	720	3/4	Side	5 1/8"	30 to 75	0000000	000000000

Extended-Life Pressure-Regulating Valves for Water, Oil, Air, and Inert Gas

For Use With: Water, Oil, Air, Inert Gas
Temperature Range: 32° to 180° F

For a longer service life than brass and cast iron valves, these have a durable bronze body. They automatically reduce a high, variable inlet pressure to a lower, stable outlet pressure. Adjust the outlet pressure within the range. All valves have an internal strainer to trap debris.

Inlet			Outlet
Pipe Size	Location	Max. Pressure, psi	Pipe Size	Location	End-to-End Lg.	Outlet Pressure Range, psi		Each
NPT Female
Bronze Body—Buna-N Diaphragm and Seal
3/4	Side	400	3/4	Side	5 1/8"	30 to 75	00000000	0000000

Pressure-Regulating Valves for Steam

For Use With: Steam
Temperature Range: -20° to 400° F

Automatically reduce a high, variable inlet pressure in your steam system to a lower, stable outlet pressure. Adjust the outlet pressure within the range. These valves have a cast iron body that absorbs vibration from pressure changes to reduce wear and noise in your pipeline.

Internal strainers trap debris.

Valves
Inlet			Outlet						Repair Kits
Pipe Size	Location	Max. Pressure, psi	Pipe Size	Location	End-to-End Lg.	Outlet Pressure Range, psi		Each		Each
NPT Female
Cast Iron Body—Bronze Diaphragm and PTFE Seal with Internal Strainer
3/4	Side	150	3/4	Side	5 1/8"	30 to 75	0000000	0000000	0000000	0000000

Extended-Life Pressure-Regulating Valves for Steam

For Use With: Steam
Temperature Range: -20° to 400° F

For a longer service life than cast iron valves, these have a durable bronze body. All automatically reduce a high, variable inlet pressure to a lower, stable outlet pressure. Adjust the outlet pressure within the range. Valves have an internal strainer to trap debris.

Inlet			Outlet
Pipe Size	Location	Max. Pressure, psi	Pipe Size	Location	End-to-End Lg.	Outlet Pressure Range, psi		Each
NPT Female
Bronze Body—Bronze Diaphragm and PTFE Seal
3/4	Side	250	3/4	Side	5 1/8"	30 to 75	00000000	0000000

Corrosion-Resistant Pressure-Regulating Valves for Steam

For Use With: Steam
Temperature Range: -40° to 450° F

Regulate steam pressure in wet environments and harsh conditions with these valves that have a 316 stainless steel body for exceptional corrosion resistance. They automatically reduce a high, variable inlet pressure to a lower, stable outlet pressure. Adjust the outlet pressure within the range.

Inlet			Outlet
Pipe Size	Location	Max. Pressure, psi	Pipe Size	Location	End-to-End Lg.	Outlet Pressure Range, psi		Each
NPT Female
316 Stainless Steel Body—316 Stainless Steel Diaphragm and PTFE Seal
3/4	Side	400	3/4	Side	5 1/8"	30 to 75	0000000	000000000

Extended-Life Pressure-Regulating Valves for Cryogenic Liquids

For Use With: Liquid Argon, Liquid Carbon Dioxide, Liquid Nitrogen, Liquid Oxygen
Temperature Range: -320° to 150° F

For a longer service life than standard valves for cryogenic liquids, these have a durable bronze body. All are cleaned and bagged for oxygen service and other high-purity applications. They automatically reduce a high, variable inlet pressure to a lower, stable outlet pressure. Adjust the outlet pressure within the range. Valves are designed to withstand the extreme cold of liquid argon, liquid carbon dioxide, liquid nitrogen, and liquid oxygen. They have an internal strainer to trap debris.

Inlet			Outlet
Pipe Size	Location	Max. Pressure, psi	Pipe Size	Location	End-to-End Lg.	Outlet Pressure Range, psi		Each
NPT Female
Bronze Body—Bronze Diaphragm and PTFE Seal with Internal Strainer
1/2	Side	400	1/2	Side	4 1/2"	20 to 75	00000000	0000000

Pressure-Regulating Valves for Drinking Water

Valve

Valve With Union Fitting

For Use With: Drinking Water
Temperature Range: 33° to 140° F

These valves meet NSF/ANSI 61 for use in drinking water systems. They automatically reduce a high, variable inlet pressure to a lower, stable outlet pressure. Adjust the outlet pressure within the range. All valves have a gauge port. An internal strainer traps debris. Body is bronze for durability and a long service life.

Valves with union fitting disassemble for easy installation and removal.

Inlet			Outlet
Pipe Size	Location	Max. Pressure, psi	Pipe Size	Location	Pressure Range, psi	End-to-End Lg.	Specifications Met		Each
NPT Female
Bronze Body—Buna-N Diaphragm and Seal with Internal Strainer
1/2	Side	400	1/2	Side	15 to 75	3 1/2"	ASSE 1003 Listed, CSA Certified, IAPMO Listed, NSF/ANSI 61	0000000	0000000
3/4	Side	400	3/4	Side	15 to 75	3 1/2"	ASSE 1003 Listed, CSA Certified, IAPMO Listed, NSF/ANSI 61	0000000	000000
1	Side	400	1	Side	15 to 75	4"	ASSE 1003 Listed, CSA Certified, IAPMO Listed, NSF/ANSI 61	0000000	000000
Bronze Body—Buna-N Diaphragm and Seal with Internal Strainer and Union Fitting
1/2	Side	400	1/2	Side	15 to 75	4 3/8"	ASSE 1003 Listed, CSA Certified, IAPMO Listed, NSF/ANSI 61	0000000	000000
3/4	Side	400	3/4	Side	15 to 75	4 7/16"	ASSE 1003 Listed, CSA Certified, IAPMO Listed, NSF/ANSI 61	0000000	000000
1	Side	400	1	Side	15 to 75	4 15/16"	ASSE 1003 Listed, CSA Certified, IAPMO Listed, NSF/ANSI 61	0000000	000000
1 1/4	Side	400	1 1/4	Side	15 to 75	6 3/16"	ASSE 1003 Listed, CSA Certified, IAPMO Listed, NSF/ANSI 61	0000000	000000
1 1/2	Side	300	1 1/2	Side	25 to 75	6 5/16"	ASSE 1003 Listed, CSA Certified, IAPMO Listed, NSF/ANSI 61	0000000	000000
2	Side	300	2	Side	25 to 75	6 1/4"	ASSE 1003 Listed, CSA Certified, IAPMO Listed, NSF/ANSI 61	0000000	000000

Extended-Life Back-Pressure-Regulating Valves for Water and Oil

For Use With: Water, Oil
Temperature Range: -40° to 450° F

For a longer service than cast iron valves, these have a durable bronze body and a 303 stainless steel seal. Commonly installed as bypass lines after centrifugal, reciprocating, and rotary pumps, they obstruct flow to maintain sufficient operating pressure in your system. If the system pressure exceeds the set pressure, they exhaust through the outlet. Adjust the set pressure within the range.

Inlet			Outlet
Pipe Size	Location	Max. Pressure, psi	Pipe Size	Location	Port-to-Port Lg.	Outlet Pressure Range, psi		Each
NPT Female
Bronze Body—303 Stainless Steel Seal
1/4	Bottom	600	1/4	Side	1 1/4"	25 to 75	0000000	0000000
3/8	Bottom	600	3/8	Side	1 1/4"	25 to 75	0000000	000000
1/2	Bottom	600	1/2	Side	1 5/8"	15 to 75	0000000	000000
3/4	Bottom	600	3/4	Side	1 5/8"	15 to 75	0000000	000000
1	Bottom	600	1	Side	2 1/4"	15 to 75	0000000	000000
1 1/4	Bottom	600	1 1/4	Side	2 1/4"	15 to 75	0000000	000000

Tire Pressure Gauges with Indicator Bar

A bar slides out of the top of these gauges to display pressure reading.

Stainless steel gauges are more corrosion resistant than steel and brass gauges.

One Angled Head

Gauge

Pressure Range
psi	kPa	Numeric Increments, psi	Accuracy	Overall Lg.	Indicator Bar Material	Features		Each
Stainless Steel
10-75	20-500	1	±2 psi	5 3/4"	Plastic	Pocket Clip	00000000	00000