Barbed Gauges | McMaster-Carr

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139 Products

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)

Image of Product. Front orientation. Differential Pressure and Vacuum Gauges. Differential Pressure and Vacuum Gauges with Digital Display .

	Vacuum Range, in. Hg	Pressure Resolution, in. H₂O	Max. Pressure	For Tube ID	Environment Temp. Range, ° F	Process Temp. Range, ° F	Digit Ht.	Batteries Included	Features	For Use With	Accuracy		Each
Barbed Fitting Connection



	0 psi to 0.723 psi 0 psi to 10 psi 0 kPa to 4.982 kPa 0 in. H₂O to 20 in. H₂O 0 mbar to 49.82 mbar	0 to 1.471	0.01	0.723 psi; 10 psi; 4.982 kPa; 20 in. H₂O; 49.82 mbar	1/8" to 3/16"	35 to 100	0 to 140	3/8"	Yes	40-Reading Memory, Overpressure Alarm	Air	±0.5% Full-Scale Accuracy (Not Rated)	4125K41	0000000


	0 psi to 7.225 psi 0 psi to 30 psi 0 kPa to 49.82 kPa 0 in. H₂O to 200 in. H₂O 0 mbar to 498.2 mbar	0 to 14.71	0.1	7.225 psi; 30 psi; 49.82 kPa; 200 in. H₂O; 498.2 mbar	1/8" to 3/16"	35 to 100	0 to 140	3/8"	Yes	40-Reading Memory, Overpressure Alarm	Air	±0.5% Full-Scale Accuracy (Not Rated)	4125K43	000000
	0 psi to 20 psi 0 psi to 60 psi 0 kPa to 137.9 kPa 0 in. H₂O to 553 in. H₂O 0 mbar to 1,379 mbar	0 to 40.72	0.01	20 psi; 60 psi; 137.9 kPa; 553 in. H₂O; 1,379 mbar	1/8" to 3/16"	35 to 100	0 to 140	3/8"	Yes	40-Reading Memory, Overpressure Alarm	Air	±0.5% Full-Scale Accuracy (Not Rated)	4125K46	000000


	Barbed Fitting Connection with Calibration Certificate Traceable to NIST



			0 psi to 0.723 psi 0 psi to 10 psi 0 kPa to 4.982 kPa 0 in. H₂O to 20 in. H₂O 0 mbar to 49.82 mbar	0 to 1.471	0.01	0.723 psi; 10 psi; 4.982 kPa; 20 in. H₂O; 49.82 mbar	1/8" to 3/16"	35 to 100	0 to 140	3/8"	Yes	40-Reading Memory, Overpressure Alarm	Air	±0.5% Full-Scale Accuracy (Not Rated)	4125K61	000000


			0 psi to 7.225 psi 0 psi to 30 psi 0 kPa to 49.82 kPa 0 in. H₂O to 200 in. H₂O 0 mbar to 498.2 mbar	0 to 14.71	0.1	7.225 psi; 30 psi; 49.82 kPa; 200 in. H₂O; 498.2 mbar	1/8" to 3/16"	35 to 100	0 to 140	3/8"	Yes	40-Reading Memory, Overpressure Alarm	Air	±0.5% Full-Scale Accuracy (Not Rated)	4125K63	000000
			0 psi to 20 psi 0 psi to 60 psi 0 kPa to 137.9 kPa 0 in. H₂O to 553 in. H₂O 0 mbar to 1,379 mbar	0 to 40.72	0.01	20 psi; 60 psi; 137.9 kPa; 553 in. H₂O; 1,379 mbar	1/8" to 3/16"	35 to 100	0 to 140	3/8"	Yes	40-Reading Memory, Overpressure Alarm	Air	±0.5% Full-Scale Accuracy (Not Rated)	4125K66	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.

Nylon Connections (Inches of Water)

Image of Product. Front orientation. Differential Pressure Gauges. Low-Pressure Differential Gauges with U-Tube, Nylon Connection.

Barbed Fitting Connection—Gauges with barbed tube connection have a flexible body that rolls up for storage or transport.

Magnetic—Magnet-mount gauges can be moved for use in multiple locations.

							Environment Temperature Change		Process Temperature Range
	Pressure, in. H₂O	Pressure Scale Range	Pressure Numeric Increments, in. H₂O	Graduations, in. H₂O	Max. Pressure	Ht.	Min.	Max.	Min.	Max., ° F	Mount Type	For Use With	Accuracy		Each
Male Barbed Tubes for 3/16" Tube IDs



		0 to 8	4-0-4 In. of H₂O	1	0.1	Not Rated	17"	Not Rated	Not Rated	Not Rated	130	Magnetic	Air, Carbon Dioxide, Hydrogen, Argon	Not Rated	3986K11	0000000


		0 to 12	6-0-6 In. of H₂O	1	0.1	Not Rated	21"	Not Rated	Not Rated	Not Rated	130	Magnetic	Air, Carbon Dioxide, Hydrogen, Argon	Not Rated	3986K12	000000
		0 to 16	8-0-8 In. of H₂O	1	0.1	Not Rated	25"	Not Rated	Not Rated	Not Rated	130	Magnetic	Air, Carbon Dioxide, Hydrogen, Argon	Not Rated	3986K13	000000
		0 to 24	12-0-12 In. of H₂O	1	0.1	Not Rated	33"	Not Rated	Not Rated	Not Rated	130	Magnetic	Air, Carbon Dioxide, Hydrogen, Argon	Not Rated	3986K14	000000
		0 to 30	15-0-15 In. of H₂O	1	0.1	Not Rated	39"	Not Rated	Not Rated	Not Rated	130	Magnetic	Air, Carbon Dioxide, Hydrogen, Argon	Not Rated	3986K15	000000
		0 to 36	18-0-18 In. of H₂O	1	0.1	Not Rated	45"	Not Rated	Not Rated	Not Rated	130	Magnetic	Air, Carbon Dioxide, Hydrogen, Argon	Not Rated	3986K16	000000
		0 to 48	24-0-24 in of H₂O	1	0.1	Not Rated	57"	Not Rated	Not Rated	Not Rated	130	Magnetic	Air, Carbon Dioxide, Hydrogen, Argon	Not Rated	3986K17	000000
		0 to 60	30-0-30 In. of H₂O	1	0.1	Not Rated	69"	Not Rated	Not Rated	Not Rated	130	Magnetic	Air, Carbon Dioxide, Hydrogen, Argon	Not Rated	3986K18	000000
		0 to 72	36-0-36 In. of H₂O	1	0.1	Not Rated	81"	Not Rated	Not Rated	Not Rated	130	Magnetic	Air, Carbon Dioxide, Hydrogen, Argon	Not Rated	3986K19	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 Connections (Inches of Water)

Image of Product. Front orientation. Differential Pressure Gauges. Low-Pressure Differential Gauges with Inclined Scale.

					Indicating Liquid
	Pressure, in. H₂O	Max. Pressure, psi	Max. Process Temp., ° F	Ht.	Color	Specific Gravity	Mount Type	Mounting Fasteners Included	Includes	For Use With	Accuracy		Each
Male Barbed Tubes for 1/8" Tube IDs



		0 to 3	10	140	6"	Red	0.826	Screw On	Yes	8-ft. Lg. Tubing, Indicating Liquid	Air	±3%	3974K1	000000


		0 to 7	10	140	6"	Blue	1.91	Screw On	Yes	8-ft. Lg. Tubing, Indicating Liquid	Air	±3%	3974K2	000000

Differential Pressure Sensors


Style A	Style C	Style D

Use these sensors with differential pressure gauges and switches to measure the static pressure drop across air filters, cooling coils, and blowers in air-handling equipment. Install them in duct through a hole and connect to your gauge with tubing.

Style D—Style D is held in place with a magnet so you can move it for use in multiple locations.

Pressure Tubes—Sensors with pressure tubes give more accurate measurements in applications with high air flow.

Style	For Tube ID	Insertion Dp.	Fitting Connection	Gender	Mount Type	Material	Features
A	1/8" to 0.1875"	—	Barbed	Male	Screw On	Brass	—	4077K56
C	1/8" to 0.1875"	4"	Barbed	Male	Screw On	Brass	Pressure Tubes	4077K52
D	0.1875"	3"	Barbed	Male	Magnetic	Brass	Pressure Tubes	4077K53

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 Connections (Pounds per Square Inch, Bar)

Image of Product. Front orientation. Differential Pressure Gauges. Low-Pressure Differential Gauges with Digital Display.

	Gauges															Nylon Carrying Cases
	Pressure Range
	Pressure 1, psi	Pressure 2, bar	Pressure Resolution, psi	Max. Pressure, psi	Environment Temp. Range, ° F	Process Temp. Range, ° F	Digit Ht.	Ht.	Wd.	Batteries Included	For Use With	Accuracy	Hazardous Location Rating		Each		Each
Male Barbed Tubes for 1/8" to 3/16" Tube IDs



		0 to 30	0 to 2.069	0.01	60	35 to 100	0 to 140	3/8"	6 1/2"	2 13/16"	Yes	Air, Natural Gas	±0.5%	NEC Class I Division 2 Groups A, B, C, D	4125K25	0000000	4125K11	000000


		Male Barbed Tubes for 1/8" to 3/16" Tube IDs with Calibration Certificate Traceable to NIST



				0 to 30	0 to 2.069	0.01	60	35 to 100	0 to 140	3/8"	6 1/2"	2 13/16"	Yes	Air, Natural Gas	±0.5%	NEC Class I Division 2 Groups A, B, C, D	4125K55	000000	4125K11	00000

Aluminum Case with Nickel-Plated Brass Connections (Kilopascals, Inches of Water)

	Gauges															Nylon Carrying Cases
	Pressure Range
	Pressure 1, kPa	Pressure 2, in. H₂O	Pressure Resolution, in. H₂O	Max. Pressure, psi	Environment Temp. Range, ° F	Process Temp. Range, ° F	Digit Ht.	Ht.	Wd.	Batteries Included	For Use With	Accuracy	Hazardous Location Rating		Each		Each
Male Barbed Tubes for 1/8" to 3/16" Tube IDs



		0 to 4.982	0 to 20	0.01	10	35 to 100	0 to 140	3/8"	6 1/2"	2 13/16"	Yes	Air, Natural Gas	±0.5%	NEC Class I Division 2 Groups A, B, C, D	4125K21	0000000	4125K11	000000


		0 to 49.82	0 to 200	0.1	30	35 to 100	0 to 140	3/8"	6 1/2"	2 13/16"	Yes	Air, Natural Gas	±0.5%	NEC Class I Division 2 Groups A, B, C, D	4125K23	000000	4125K11	00000


		Male Barbed Tubes for 1/8" to 3/16" Tube IDs with Calibration Certificate Traceable to NIST



				0 to 4.982	0 to 20	0.01	10	35 to 100	0 to 140	3/8"	6 1/2"	2 13/16"	Yes	Air, Natural Gas	±0.5%	NEC Class I Division 2 Groups A, B, C, D	4125K51	000000	4125K11	00000


				0 to 49.82	0 to 200	0.1	30	35 to 100	0 to 140	3/8"	6 1/2"	2 13/16"	Yes	Air, Natural Gas	±0.5%	NEC Class I Division 2 Groups A, B, C, D	4125K53	000000	4125K11	00000

Differential Pressure Transmitters for Air

Remotely monitor the difference in air pressure between two inputs with these transmitters. Also known as transducers, they convert pressure to an electrical signal that is interpreted by receiving devices, such as remote displays, programmable logic controllers, and motor speed controls. These transmitters are often used to indicate a filter is clogged or help you maintain a certain air pressure in ovens, dryers, and HVAC systems. They mount directly to DIN rail or a flat surface without the need for additional brackets. CE marked, all meet European safety standards. These transmitters are rated NEMA 1 for indoor use.

When measuring pressure in ductwork, pair them with a static pressure probe.

For your receiving device to interpret the signal from the transmitter, you will need to calibrate it for the transmitter's differential pressure range and output signal. As differential pressure increases, the output signal from the transmitter will increase. Transmitters will only provide accurate readings within the rated pressure range. Connect them using two wires. 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.

ABS Housing About ABS Housing

								Mounting Holes								Connection
	Pressure Differential, in. H₂O	Max. Input Pressure, in. H₂O	Input Voltage, V DC	For Tube ID	For DIN Rail Ht., mm	For No. of Wires	Mounting Hardware Included	Top Dia. (No. of)	Bottom Dia. (No. of)	Ht.	Wd.	Certification	Enclosure Rating	For Use With	Accuracy	Pipe	Fitting	Material	Temp. Range, ° F		Each
4 to 20 mA Output Signal—Screw Terminals







				DIN-Rail/Surface Mount

				-15 to 15	415	12 to 36	1/8"	35	2	No	3/16", 2	5/32", 2	3 5/16"	1 7/8"	CE Marked	NEMA 1	Air	±0.8%	Male	Barbed	Brass	0 to 160	5539N18	0000000


				-10 to 10	415	12 to 36	1/8"	35	2	No	3/16", 2	5/32", 2	3 5/16"	1 7/8"	CE Marked	NEMA 1	Air	±0.8%	Male	Barbed	Brass	0 to 160	5539N17	000000
				-5 to 5	415	12 to 36	1/8"	35	2	No	3/16", 2	5/32", 2	3 5/16"	1 7/8"	CE Marked	NEMA 1	Air	±0.8%	Male	Barbed	Brass	0 to 160	5539N16	000000
				-2.5 to 2.5	415	12 to 36	1/8"	35	2	No	3/16", 2	5/32", 2	3 5/16"	1 7/8"	CE Marked	NEMA 1	Air	±0.8%	Male	Barbed	Brass	0 to 160	5539N15	000000
				-1 to 1	415	12 to 36	1/8"	35	2	No	3/16", 2	5/32", 2	3 5/16"	1 7/8"	CE Marked	NEMA 1	Air	±0.8%	Male	Barbed	Brass	0 to 160	5539N14	000000
				-0.5 to 0.5	415	12 to 36	1/8"	35	2	No	3/16", 2	5/32", 2	3 5/16"	1 7/8"	CE Marked	NEMA 1	Air	±0.8%	Male	Barbed	Brass	0 to 160	5539N13	000000
				-0.25 to 0.25	415	12 to 36	1/8"	35	2	No	3/16", 2	5/32", 2	3 5/16"	1 7/8"	CE Marked	NEMA 1	Air	±0.8%	Male	Barbed	Brass	0 to 160	5539N12	000000
				-0.1 to 0.1	415	12 to 36	1/8"	35	2	No	3/16", 2	5/32", 2	3 5/16"	1 7/8"	CE Marked	NEMA 1	Air	±0.8%	Male	Barbed	Brass	0 to 160	5539N11	000000
				0 to 0.1	415	12 to 36	1/8"	35	2	No	3/16", 2	5/32", 2	3 5/16"	1 7/8"	CE Marked	NEMA 1	Air	±0.8%	Male	Barbed	Brass	0 to 160	5539N19	000000
				0 to 0.25	415	12 to 36	1/8"	35	2	No	3/16", 2	5/32", 2	3 5/16"	1 7/8"	CE Marked	NEMA 1	Air	±0.8%	Male	Barbed	Brass	0 to 160	5539N21	000000
				0 to 0.5	415	12 to 36	1/8"	35	2	No	3/16", 2	5/32", 2	3 5/16"	1 7/8"	CE Marked	NEMA 1	Air	±0.8%	Male	Barbed	Brass	0 to 160	5539N22	000000


				0 to 1	415	12 to 36	1/8"	35	2	No	3/16", 2	5/32", 2	3 5/16"	1 7/8"	CE Marked	NEMA 1	Air	±0.8%	Male	Barbed	Brass	0 to 160	5539N23	000000
				0 to 2.5	415	12 to 36	1/8"	35	2	No	3/16", 2	5/32", 2	3 5/16"	1 7/8"	CE Marked	NEMA 1	Air	±0.8%	Male	Barbed	Brass	0 to 160	5539N24	000000
				0 to 5	415	12 to 36	1/8"	35	2	No	3/16", 2	5/32", 2	3 5/16"	1 7/8"	CE Marked	NEMA 1	Air	±0.8%	Male	Barbed	Brass	0 to 160	5539N25	000000
				0 to 10	415	12 to 36	1/8"	35	2	No	3/16", 2	5/32", 2	3 5/16"	1 7/8"	CE Marked	NEMA 1	Air	±0.8%	Male	Barbed	Brass	0 to 160	5539N26	000000
				0 to 25	415	12 to 36	1/8"	35	2	No	3/16", 2	5/32", 2	3 5/16"	1 7/8"	CE Marked	NEMA 1	Air	±0.8%	Male	Barbed	Brass	0 to 160	5539N27	000000
				0 to 50	415	12 to 36	1/8"	35	2	No	3/16", 2	5/32", 2	3 5/16"	1 7/8"	CE Marked	NEMA 1	Air	±0.8%	Male	Barbed	Brass	0 to 160	5539N28	000000
				0 to 100	415	12 to 36	1/8"	35	2	No	3/16", 2	5/32", 2	3 5/16"	1 7/8"	CE Marked	NEMA 1	Air	±0.8%	Male	Barbed	Brass	0 to 160	5539N29	000000

Flow Sights with Barbed Fittings for Water, Oil, Air, and Inert Gas


Ball Indicator	Rotor Indicator

Monitor liquid movement, color, and clarity in tube systems—these sights have barbed fittings that slide into soft plastic and rubber tubing. They have a clear body and an indicator that moves when flow is present, so you can visually confirm flow from a distance.

							Indicator
	For Tube ID	Temp. Range, ° F	End-to-End Lg.	Ht.	Max. Pressure @ Temp.	Direction of Flow	Material	Color	For Use With		Each
Ball Indicator







				Polycarbonate Body

				1/4" to 3/8"	32 to 180	3"	2 1/4"	10 psi @ 70° F	Bottom to Top, Left to Right, Right to Left, Top to Bottom	Nylon	White	Water, Oil, Air, Inert Gas	4218K61	000000


				Rotor Indicator







								PMP Body

								1/4" to 7/16"	32 to 140	3 1/2"	1 9/16"	20 psi @ 70° F	Bottom to Top, Left to Right, Right to Left, Top to Bottom	Polypropylene	Blue	Water, Mineral Oil, Air, Inert Gas	4218K63	00000




										Polystyrene Body

										3/16" to 1/4"	0 to 190	2"	1"	10 psi @ 70° F	Bottom to Top, Left to Right, Right to Left, Top to Bottom	Polystyrene	Blue	Water, Oil, Air, Inert Gas	4218K62	00000

Differential Pressure Transmitters with Digital Display for Air

With a digital display and selectable differential pressure ranges, these transmitters are a versatile alternative to transmitters with dial indicators. Unlike a standard transmitter that has one wider differential pressure range, these transmitters have multiple ranges to choose from. The selectable pressure range means they are more accurate than standard transmitters since their accuracy applies to each small range rather than a single wide range. They can also be configured to output either current or voltage, while standard transmitters typically output one signal type. The digital display allows you to troubleshoot and monitor differential pressure at the source. Also known as transducers, they measure the difference in pressure between two inputs and convert it to an electrical signal that can be interpreted by receiving devices, such as remote displays, programmable logic controllers, and motor speed controls. They are often used to indicate a filter is clogged or help you maintain a certain air pressure in ovens, dryers, and HVAC systems. All are rated UL 94 V-0, so they meet flammability standards. CE marked, they also meet European safety standards.

When measuring pressure in ductwork, pair them with a static pressure probe. Transmitters with an 8" pressure probe cable include a static pressure probe.

Connect them using two wires when using the 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. For voltage output, connect them using three wires—two wires into the power supply and a separate wire to send a signal to the receiver. The receiver and the transmitter share a common ground wire back to the power supply.

Nylon Housing About Nylon Housing

Image of Product. Front orientation. Contains Annotated. Differential Pressure Transmitters. Differential Pressure Transmitters with Digital Display for Air, Nylon Housing.

IP66 Enclosure Rating—IP66 rated transmitters protect against dust and washdowns.

NEMA 4X Enclosure Rating—NEMA 4X rated transmitters protect against dirt, weather, corrosion, and washdowns.

							Mounting Holes							Connection
	Pressure Differential Range	Max. Input Pressure, in. H₂O	Input Voltage, V DC	For Tube ID	For No. of Wires	Mounting Hardware Included	Dia.	No. of	Ht.	Certification	Enclosure Rating	For Use With	Accuracy	Pipe	Fitting	Material	Temp. Range, ° F		Each
4 to 20 mA, 0 to 5V DC, 0 to 10V DC Output Signal—Screw Terminals







				Surface Mount

				0 to 0.1 in. H₂O 0 to 0.15 in. H₂O 0 to 0.25 in. H₂O 0 to 0.5 in. H₂O	99	10 to 36	1/8", 3/16", 1/4", 5 mm, 6 mm	2, 3	No	3/16"	3	4 13/16"	CE Marked	IP66, NEMA 4X	Air	±1%	Male	Barbed	Nylon	-4 to 158	4442N11	0000000


				0 to 1 in. H₂O 0 to 2 in. H₂O 0 to 3 in. H₂O 0 to 5 in. H₂O	166	10 to 36	1/8", 3/16", 1/4", 5 mm, 6 mm	2, 3	No	3/16"	3	4 13/16"	CE Marked	IP66, NEMA 4X	Air	±1%	Male	Barbed	Nylon	-4 to 158	4442N12	000000
				0 to 10 in. H₂O 0 to 15 in. H₂O 0 to 25 in. H₂O 0 to 28 in. H₂O	166	10 to 36	1/8", 3/16", 1/4", 5 mm, 6 mm	2, 3	No	3/16"	3	4 13/16"	CE Marked	IP66, NEMA 4X	Air	±1%	Male	Barbed	Nylon	-4 to 158	4442N13	000000

Polycarbonate Housing About Polycarbonate Housing

DIN-Rail/Surface Mount—DIN-rail/surface mount transmitters give you mounting flexibility. They include the bracket you'll need for mounting it to DIN rail.

Calibration Certificate Traceable to NIST—Transmitters with a calibration certificate traceable to NIST have passed tests for accuracy.

IP67 Enclosure Rating—Transmitters that meet IP67 protect against dust and submersion.

								Mounting Holes									Connection			Calibration Certificate Traceable to NIST
	Pressure Differential Range	Max. Input Pressure, psi	Input Voltage, V DC	For Tube ID	For DIN Rail Ht., mm	For No. of Wires	Mounting Hardware Included	Dia.	No. of	Ht.	Wd.	Certification	Pressure Probe Cable Lg.	Enclosure Rating	For Use With	Accuracy	Fitting	Material	Temp. Range, ° F		Each
4 to 20 mA, 0 to 5V DC, 0 to 10V DC Output Signal—Screw Terminals







				Surface Mount

				-5 to 5 in. H₂O -2.5 to 2.5 in. H₂O -1 to 1 in. H₂O -0.5 to 0.5 in. H₂O 0 to 0.5 in. H₂O 0 to 1 in. H₂O 0 to 2.5 in. H₂O 0 to 5 in. H₂O	10	13 to 30	3/16"	—	2, 3	No	3/16"	2	5 7/16"	3 3/16"	CE Marked	—	IP67	Air	±1%	Barbed	Brass	32 to 122	3264N21	0000000




						DIN-Rail/Surface Mount

						-5 to 5 in. H₂O -2.5 to 2.5 in. H₂O -1 to 1 in. H₂O -0.5 to 0.5 in. H₂O 0 to 0.5 in. H₂O 0 to 1 in. H₂O 0 to 2.5 in. H₂O 0 to 5 in. H₂O	10	13 to 30	3/16"	35	2, 3	No	3/16"	2	5 7/16"	3 3/16"	CE Marked	8"	IP67	Air	±1%	Barbed	Brass	32 to 122	3264N22	000000

Infrared Thermometer Transmitter Air Purges

Use these air purges to protect your infrared thermometer transmitter and keep it working properly in hot or dirty environments.

Air purges flush out dust, moisture, and other contaminants on transmitter lenses that can interfere with infrared radiation focus and cause inaccurate readings. Connect them to a compressed air line to use.

Material		Each
303 Stainless Steel	4680N116	0000000

Flowmeters for Oxygen

To prevent contaminating your oxygen line, these flowmeters are specially cleaned and bagged. As oxygen flows through, it pushes an indicator up the scale, showing you the flow rate. Mount these flowmeters vertically inline with your oxygen system, so oxygen flows up from the bottom. The flow-control knob lets you open and close the valve at the inlet to adjust the flow rate within the range.

These flowmeters are calibrated with oxygen but can be used with other gases. If you’re using these with a gas other than oxygen, you’ll need to calculate the flow rate by multiplying the number shown on the scale by the specific-gravity conversion factor for your gas.

Cannot Be Sold to Canada—Flowmeters cannot be sold to Canada due to import regulations.

					Temp., ° F
	Flow, L/min	Overall Ht.	Accuracy	Max. Pressure @ Temp.	Min.	Max.	Seal Material	Mounting Position	Features	Cannot Be Sold To		Each
Polycarbonate Body with Brass Fittings







				1/8 NPT Threaded Female Pipe Inlet × Barbed Male Tube Outlet For 1/4" Tube ID

				0 to 30	7 1/4"	±10%	50 psi @ 70° F	-40	140	Fluoroelastomer	Vertical	Flow-Control Knob	Canada	3505K211	0000000


				0.25 to 3.5	7 1/4"	±10%	150 psi @ 72° F	-40	140	Fluoroelastomer	Vertical	Flow-Control Knob	Canada	3505K34	000000
				0.5 to 8	7 1/4"	±10%	150 psi @ 72° F	-40	140	Fluoroelastomer	Vertical	Flow-Control Knob	Canada	3505K35	000000
				0.5 to 15	7 1/4"	±10%	150 psi @ 72° F	-40	140	Fluoroelastomer	Vertical	Flow-Control Knob	Canada	3505K36	000000




						1/4 NPT Threaded Female Pipe Inlet × Barbed Male Tube Outlet For 1/4" Tube ID

						0 to 3.5	7 1/4"	±10%	50 psi @ 70° F	-40	140	Fluoroelastomer	Vertical	Flow-Control Knob	Canada	3505K212	000000


						0 to 8	7 1/4"	±10%	50 psi @ 70° F	-40	140	Fluoroelastomer	Vertical	Flow-Control Knob	Canada	3505K213	000000
						0 to 15	7 1/4"	±10%	50 psi @ 70° F	-40	140	Fluoroelastomer	Vertical	Flow-Control Knob	Canada	3505K214	000000
						0 to 30	7 1/4"	±10%	50 psi @ 70° F	-40	140	Fluoroelastomer	Vertical	Flow-Control Knob	Canada	3505K215	000000
						0 to 70	7 1/4"	±10%	50 psi @ 70° F	-40	140	Fluoroelastomer	Vertical	Flow-Control Knob	Canada	3505K216	000000

Parker Modular Compressed Air Filter/Regulators for Particle Removal

A filter and regulator joined top-to-bottom, these filter/regulators supply clean, compressed air at the pressure you need. They connect to other Parker units of the same series with joiner clamps (sold separately)—even if the pipe sizes are slightly different—so you can customize your air preparation system. The regulator is relieving, so it will exhaust when the downstream pressure exceeds the set pressure. Add a safety lockout valve to prevent accidental start-ups during maintenance and comply with OSHA lockout/tagout regulations.

P31 Series—NPT Female Inlet × NPT Female Outlet

Image of Product. Front orientation. Compressed Air Filter/Regulators. Parker Modular Compressed Air Filter/Regulators for Particle Removal, Clear Bowl.

Clear Bowl

Automatic Drain—Bowls with an automatic drain periodically release condensate into the air, eliminating the need for manual emptying.

Tamper-Resistant Padlockable Covers—Padlockable covers (sold separately) clamp over the regulator knob to prevent unwanted pressure changes.

	Filter/Regulators											Replacement Elements for Particle Removal		Replacement Filter Bowls		Tamper-Resistant Padlockable Covers
	Pipe Size							Overall
	Inlet	Outlet	Max. Flow Rate @ Pressure	Pressure Regulation Range, psi	Max. Pressure, psi	Max. Temp., ° F	Removes Particle Size Down To, μm	Ht.	Wd.		Each		Each		Each		Each
P31 Series







				Polycarbonate Bowl—Clear with Nylon Bowl Guard and Automatic Drain

				1/4	1/4	70 scfm @ 100 psi	0 to 125	150	125	5	6 5/8"	1 5/8"	3108N101	000000	3100N111	00000	———	0	8367N11	000000




						Polycarbonate Bowl—Clear with Nylon Bowl Guard and Manual Drain

						1/4	1/4	70 scfm @ 100 psi	0 to 125	150	125	5	6 5/8"	1 5/8"	3108N102	00000	3100N111	0000	3102N35	000000	8367N11	00000

Accessories and Replacements for Filter/Regulators

		Each
Joiner Clamp with Mounting Bracket	8486T111	00000
Replacement Filter Bowl	3102N31	00000

P32 Series—NPT Female Inlet × NPT Female Outlet

Clear Bowl

	Filter/Regulators											Replacement Elements for Particle Removal		Replacement Filter Bowls
	Pipe Size							Overall
	Inlet	Outlet	Max. Flow Rate @ Pressure	Pressure Regulation Range, psi	Max. Pressure, psi	Max. Temp., ° F	Removes Particle Size Down To, μm	Ht.	Wd.		Each		Each		Each
P32 Series







				Polycarbonate Bowl—Clear with Nylon Bowl Guard and Manual Drain

				1/4	1/4	165 scfm @ 100 psi	0 to 125	150	125	5	10 3/8"	2 3/8"	3108N106	0000000	3100N112	000000	3102N36	000000


				3/8	3/8	175 scfm @ 100 psi	0 to 125	150	125	5	10 3/8"	2 3/8"	3108N107	000000	3100N112	00000	3102N36	00000
				1/2	1/2	175 scfm @ 100 psi	0 to 125	150	125	5	10 3/8"	2 3/8"	3108N108	000000	3100N112	00000	3102N36	00000

Accessories for Filter/Regulators

		Each
Joiner Clamp with Mounting Bracket	8486T271	000000
Tamper-Resistant Padlockable Cover	8367N12	00000

Airflow Meters

Liquid Meter

Measure airflow velocity in ducts, blowers, and ventilation systems with these meters.

Liquid Meter—For high-velocity ducts, blowers, and industrial ventilation systems.

		Overall
	Airflow Speed, fpm	Ht.	Wd.	Dp.	Fitting Connection	Mounting Fasteners Included	Includes		Each
Liquid Meter



		0 to 7,000	6"	7 1/2"	1 1/4"	Barbed	Yes	8-ft. Lg. Tubing, Red Indicating Liquid	3974K3	0000000

Replacement Gauge Liquids

		Each
Replacement Liquid	3974K7	000000

Compressed Air Filter/Regulators for Particle Removal with Push-to-Connect Fittings

Image of Product. Front orientation. Compressed Air Filter/Regulators. Compressed Air Filter/Regulators for Particle Removal with Push-to-Connect Fittings.

Designed for quick installation on your air line, these filter/regulators don’t require pipe nipples or joiner clamps. Their push-to-connect fittings create airtight seals on tubing. A filter and regulator joined top-to-bottom, these filter/regulators provide clean, compressed air at the pressure you need. The regulator is relieving, so it will exhaust when the downstream pressure exceeds the set pressure.

Automatic Drain—Bowls with an automatic drain periodically release condensate into the air, eliminating the need for manual emptying.

Mounting Brackets—Mounting brackets (sold separately) allow you to attach the filter/regulator to a wall or equipment.

	Filter/Regulators										Elements		Replacement Filter Bowls		Mounting Brackets
	For Tube OD						Overall
	Inlet	Outlet	Max. Flow Rate @ Pressure	Max. Pressure, psi	Pressure Regulation Range, psi	Removes Particle Size Down To, μm	Wd.	Ht.		Each		Each		Each		Each
Polycarbonate Bowl—Clear with Automatic Drain



		1/4"	1/4"	22 scfm @ 100 psi	150	0 to 125	5	3 3/8"	6 1/2"	8516N12	0000000	8516N14	000000	8516N15	000000	8844K106	00000


		3/8"	3/8"	22 scfm @ 100 psi	150	0 to 125	5	3 7/8"	6 1/2"	8516N13	000000	8516N14	00000	8516N15	00000	8844K106	0000

Compressed Air Filter/Regulators for Particle Removal

A filter and regulator combined into a single unit, these filter/regulators provide clean, compressed air at the pressure you need. The regulator is relieving, so it will exhaust when the downstream pressure exceeds the set pressure.

Compressed Air Filter/Regulators with Gauge Included—NPT Female Inlet × NPT Female Outlet

Stacked

with Clear

Bowl and

Acetal

Guard

Stacked Components—Stacked filter/regulators are joined top-to-bottom, so they take up less horizontal space than inline filter/regulators.

Automatic Drain—Bowls with an automatic drain periodically release condensate into the air, eliminating the need for manual emptying.

	Filter/Regulators												Replacement Elements for Particle Removal		Mounting Brackets
	Pipe Size								Overall
	Inlet	Outlet	Max. Flow Rate @ Pressure	Pressure Regulation Range, psi	Max. Pressure, psi	Bowl Material	Max. Temp., ° F	Features	Ht.	Wd.		Each		Each		Each
Removes Particle Size Down to 5 μm







				Stacked—Clear Bowl with Acetal Bowl Guard and Automatic Drain

				1/4	1/4	71 scfm @ 100 psi	0 to 174	217	Polycarbonate	120	Padlockable Knob	8"	1 21/32"	9241N15	000000	3055N14	00000	3276N11	00000


				3/8	3/8	106 scfm @ 100 psi	0 to 174	188	Polycarbonate	120	Padlockable Knob	8"	1 3/4"	9241N16	00000	3055N14	0000	3276N11	0000
				1/2	1/2	255 scfm @ 100 psi	0 to 174	188	Polycarbonate	120	Padlockable Knob	9 7/8"	2 3/8"	9241N17	000000	3055N15	0000	3276N12	0000
				3/4	3/4	262 scfm @ 100 psi	0 to 174	188	Polycarbonate	120	Padlockable Knob	9 7/8"	3 3/4"	9241N18	000000	3055N15	0000	3276N12	0000
				1	1	262 scfm @ 100 psi	0 to 174	188	Polycarbonate	120	Padlockable Knob	9 7/8"	3 3/4"	9241N19	000000	3055N15	0000	3276N12	0000

Parker Modular Compressed Air Filter/Regulators for Oil and Particle Removal

Add these all-in-one units to your air supply to deliver clean, compressed air at the pressure you need. They work in two stages: the stacked filter/regulator removes large particles and sets the pressure, then the coalescing filter captures fine oil aerosols. You can connect them to Parker units of the same series with joiner clamps (sold separately)—even if the pipe sizes are slightly different—to customize your air preparation system. The regulator is relieving, so it will exhaust when the downstream pressure exceeds the set pressure.

These filter/regulators come with end blocks, so you can swap out components without unthreading your air line connections. The blocks remain connected to your pipe while you replace components between them. Add a safety lockout valve to prevent accidental start-ups during maintenance and comply with OSHA lockout/tagout regulations.

P31 Series—NPT Female Inlet × NPT Female Outlet

Image of Product. Front orientation. Compressed Air Filter/Regulators. Parker Modular Compressed Air Filter/Regulators for Oil and Particle Removal.

Tamper-Resistant Padlockable Covers—Padlockable covers (sold separately) clamp over the regulator knob to prevent unauthorized pressure changes.

	Filter/Regulators												Replacement Elements for Oil Removal		Replacement Elements for Particle Removal		Tamper-Resistant Padlockable Covers
	Pipe Size								Overall
	Inlet	Outlet	Pressure Regulation Range, psi	Max. Pressure, psi	Max. Temp., ° F	Removes Oil Content Down To, ppm	Removes Particle Size Down To, μm	Includes	Ht.	Wd.		Each		Each		Each		Each
P31C Series (7.8 scfm @ 100 psi)







				Polycarbonate Bowl—Clear with Aluminum Bowl Guard and Automatic Drain

				1/4	1/4	0 to 125	145	125	0.008	0.01	Inlet End Block, One Mounting Bracket, Outlet End Block	6 1/2"	3"	8798N11	0000000	3099N112	000000	3100N111	00000	8367N11	000000

Accessories and Replacements for Filter/Regulators

		Each
Joiner Clamp with Mounting Bracket	8486T111	00000
Replacement Filter Bowl	3102N31	00000

P32 Series—NPT Female Inlet × NPT Female Outlet

	Filter/Regulators												Replacement Elements for Oil Removal		Replacement Elements for Particle Removal
	Pipe Size								Overall
	Inlet	Outlet	Pressure Regulation Range, psi	Max. Pressure, psi	Max. Temp., ° F	Removes Oil Content Down To, ppm	Removes Particle Size Down To, μm	Includes	Ht.	Wd.		Each		Each		Each
P32C Series (7.8 scfm @ 100 psi)







				Polycarbonate Bowl—Clear with Aluminum Bowl Guard and Automatic Drain

				1/4	1/4	0 to 125	145	125	0.008	0.01	Inlet End Block, One Mounting Bracket, Outlet End Block	10 1/4"	3 7/8"	8798N12	0000000	3099N115	000000	3100N112	000000


				3/8	3/8	0 to 125	145	125	0.008	0.01	Inlet End Block, One Mounting Bracket, Outlet End Block	10 1/4"	3 7/8"	8798N13	000000	3099N115	00000	3100N112	00000
				1/2	1/2	0 to 125	145	125	0.008	0.01	Inlet End Block, One Mounting Bracket, Outlet End Block	10 1/4"	3 7/8"	8798N14	000000	3099N115	00000	3100N112	00000

Accessories and Replacements for Filter/Regulators

		Each
Joiner Clamp with Mounting Bracket	8486T271	000000
Tamper-Resistant Padlockable Cover	8367N12	00000
Replacement Filter Bowl	3102N32	00000

P33 Series—NPT Female Inlet × NPT Female Outlet

	Filter/Regulators												Replacement Elements for Oil Removal		Replacement Elements for Particle Removal
	Pipe Size								Overall
	Inlet	Outlet	Pressure Regulation Range, psi	Max. Pressure, psi	Max. Temp., ° F	Removes Oil Content Down To, ppm	Removes Particle Size Down To, μm	Includes	Ht.	Wd.		Each		Each		Each
P33C Series (7.8 scfm @ 100 psi)







				Polycarbonate Bowl—Clear with Aluminum Bowl Guard and Automatic Drain

				1/2	1/2	0 to 125	145	125	0.008	0.01	Inlet End Block, One Mounting Bracket, Outlet End Block	11 1/2"	4 3/4"	8798N15	0000000	3099N118	000000	3100N113	000000


				3/4	3/4	0 to 125	145	125	0.008	0.01	Inlet End Block, One Mounting Bracket, Outlet End Block	11 1/2"	4 3/4"	8798N16	000000	3099N118	00000	3100N113	00000

Accessories and Replacements for Filter/Regulators

		Each
Joiner Clamp with Mounting Bracket	8486T271	000000
Replacement Filter Bowl	3102N33	00000

Wilkerson Modular Compressed Air Filter/Regulators for Particle Removal

A filter and regulator stacked top-to-bottom, these filter/regulators supply clean, compressed air at the pressure you need. They connect to other Wilkerson units of the same series with joiner clamps (sold separately)—even if the pipe sizes are slightly different—so you can customize your air preparation system. The regulator is relieving, so it will exhaust when the downstream pressure exceeds the set pressure. Add a safety lockout valve to prevent accidental start-ups during maintenance and comply with OSHA lockout/tagout regulations.

08 Series—NPT Female Inlet × NPT Female Outlet

Image of Product. Front orientation. Compressed Air Filter/Regulators. Wilkerson Modular Compressed Air Filter/Regulators for Particle Removal.

Automatic Drain—Bowls with an automatic drain periodically release condensate into the air, eliminating the need for manual emptying.

Joiner Clamps—Joiner clamps (sold separately) create compact, airtight connections between components. They come with mounting brackets.

Mounting Brackets—Mounting brackets (sold separately) allow you to attach the filter/regulator to a wall or equipment.

End Block Sets—End block sets (sold separately) allow you to swap out filter/regulator/lubricator components without unthreading your air line connections. The blocks remain connected to your pipe while you replace components between them.

	Filter/Regulators											Elements		Joiner Clamps		Mounting Brackets		End Block Sets
	Pipe Size							Overall
	Inlet	Outlet	Max. Flow Rate @ Pressure	Pressure Regulation Range, psi	Max. Pressure, psi	Max. Temp., ° F	Removes Particle Size Down To, μm	Ht.	Wd.		Each		Each		Each		Each		Each
B08 Series







				Polycarbonate Bowl—Clear with Automatic Drain

				1/4	1/4	73 scfm @ 100 psi	5 to 125	150	125	5	6 5/8"	1 5/8"	8805N13	000000	60115K31	00000	60115K21	00000	60115K227	00000	60115K25	000000

18 Series—NPT Female Inlet × NPT Female Outlet

Aluminum Bowl—Aluminum bowls are stronger than plastic bowls, so they won't crack or shatter if dropped.

Automatic Drain—Bowls with an automatic drain periodically release condensate into the air, eliminating the need for manual emptying.

Joiner Clamps—Joiner clamps (sold separately) create compact, airtight connections between components. They come with mounting brackets.

Mounting Brackets—Mounting brackets (sold separately) allow you to attach the filter/regulator to a wall or equipment.

	Filter/Regulators											Elements		Replacement Filter Bowls		Joiner Clamps		Mounting Brackets		End Block Sets
	Pipe Size							Overall
	Inlet	Outlet	Max. Flow Rate @ Pressure	Pressure Regulation Range, psi	Max. Pressure, psi	Max. Temp., ° F	Removes Particle Size Down To, μm	Ht.	Wd.		Each		Each		Each		Each		Each		Each
B18 Series







				Polycarbonate Bowl—Clear with Nylon Bowl Guard and Automatic Drain

				1/4	1/4	166 scfm @ 100 psi	5 to 125	150	125	5	10 3/8"	2 3/8"	8805N17	0000000	60115K32	000000	3132N16	000000	60115K22	000000	4963K44	000000	60115K7	000000


				3/8	3/8	178 scfm @ 100 psi	5 to 125	150	125	5	10 3/8"	2 3/8"	8805N18	000000	60115K32	00000	3132N16	00000	60115K22	00000	4963K44	00000	60115K26	00000
				1/2	1/2	178 scfm @ 100 psi	5 to 125	150	125	5	10 3/8"	2 3/8"	8805N19	000000	60115K32	00000	3132N16	00000	60115K22	00000	4963K44	00000	60115K27	00000




						Aluminum Bowl—Opaque with Sight Glass and Automatic Drain

						1/4	1/4	166 scfm @ 100 psi	0 to 125	250	150	5	10 1/8"	2 3/8"	60115K401	000000	60115K32	00000	3132N18	00000	60115K22	00000	4963K44	00000	60115K7	00000


						3/8	3/8	178 scfm @ 100 psi	0 to 125	250	150	5	10 1/8"	2 3/8"	60115K403	000000	60115K32	00000	3132N18	00000	60115K22	00000	4963K44	00000	60115K26	00000
						1/2	1/2	178 scfm @ 100 psi	0 to 125	250	150	5	10 1/8"	2 3/8"	60115K402	000000	60115K32	00000	3132N18	00000	60115K22	00000	4963K44	00000	60115K27	00000

Replacements for Filter/Regulators

28 Series—NPT Female Inlet × NPT Female Outlet

Aluminum Bowl—Aluminum bowls are stronger than plastic bowls, so they won't crack or shatter if dropped.

Automatic Drain—Bowls with an automatic drain periodically release condensate into the air, eliminating the need for manual emptying.

Joiner Clamps—Joiner clamps (sold separately) create compact, airtight connections between components. They come with mounting brackets.

Mounting Brackets—Mounting brackets (sold separately) allow you to attach the filter/regulator to a wall or equipment.

	Filter/Regulators											Elements		Replacement Filter Bowls		Joiner Clamps		Mounting Brackets		End Block Sets
	Pipe Size							Overall
	Inlet	Outlet	Max. Flow Rate @ Pressure	Pressure Regulation Range, psi	Max. Pressure, psi	Max. Temp., ° F	Removes Particle Size Down To, μm	Ht.	Wd.		Each		Each		Each		Each		Each		Each
B28 Series







				Polycarbonate Bowl—Clear with Nylon Bowl Guard and Automatic Drain

				3/8	3/8	140 scfm @ 100 psi	5 to 125	150	125	5	11 1/2"	2 7/8"	8805N21	0000000	60115K33	000000	3132N21	0000000	60115K22	000000	4963K45	000000	60115K26	000000


				1/2	1/2	165 scfm @ 100 psi	5 to 125	150	125	5	11 1/2"	2 7/8"	8805N22	000000	60115K33	00000	3132N21	000000	60115K22	00000	4963K45	00000	60115K27	00000
				3/4	3/4	175 scfm @ 100 psi	5 to 125	150	125	5	11 1/2"	2 7/8"	8805N23	000000	60115K33	00000	3132N21	000000	60115K22	00000	4963K45	00000	60115K28	00000




						Aluminum Bowl—Opaque with Sight Glass and Automatic Drain

						3/8	3/8	140 scfm @ 100 psi	0 to 125	250	150	5	11 1/4"	3"	60115K58	000000	60115K33	00000	3132N23	000000	60115K22	00000	4963K45	00000	60115K26	00000


						1/2	1/2	165 scfm @ 100 psi	0 to 125	250	150	5	11 1/4"	3"	60115K45	000000	60115K33	00000	3132N23	000000	60115K22	00000	4963K45	00000	60115K27	00000
						3/4	3/4	175 scfm @ 100 psi	0 to 125	250	150	5	11 1/4"	3"	60115K46	000000	60115K33	00000	3132N23	000000	60115K22	00000	4963K45	00000	60115K28	00000

Accessories and Replacements for Filter/Regulators

Fit a nonrelieving diaphragm assembly onto these regulators to stop them from exhausting excess downstream pressure. They’re helpful if you’re using a gas you don’t want automatically released into the air, such as an expensive noble gas.

		Each
Automatic Drain	60115K242	000000
Replacement Relieving Diaphragm Assembly	60115K234	00000
Nonrelieving Diaphragm Assembly	60115K235	00000