Air Flow Rate Meters | McMaster-Carr

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Warning: Products have one, but not necessarily all, of the selected characteristics.

	Pipe Size Pipe Size

	Thread Type Thread Type

NPT

NPTF

	Flow Measurement Scale Flow Measurement Scale

Gallons per Minute

Standard Cubic Feet per
Minute

Liters per Minute

Standard Cubic Feet per Hour

Cubic Centimeters per Minute

	Maximum Flow Maximum Flow

	Display Type Display Type


Scale	Dial

	Maximum Pressure Maximum Pressure

	Mounting Location Mounting Location

Inline

Panel

	Minimum Flow Minimum Flow

	Fitting Material Fitting Material

	Connection Style Connection Style

Threaded

Compression

	Gender Gender

Female

Male

	Body Material Body Material

	Direction of Flow Direction of Flow

	Mounting Orientation Mounting Orientation

Vertical

Horizontal

Any Position

	Connection Type Connection Type


Pipe	Tube

	Graduations Graduations

	Maximum Temperature Maximum Temperature

	Overall Height Overall Height

	DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense Acquisition Regulations Supplement)

DFARS Specialty Metals
COTS-Exempt

	Seal Material Seal Material

Fluoroelastomer Rubber

EPR Rubber

Buna-N Rubber

Elastomer Rubber

	REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration, Evaluation, Authorization and Restriction of Chemicals)

REACH Compliant

	RoHS (Restriction of Hazardous Substances) RoHS (Restriction of Hazardous Substances)

RoHS Compliant

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117 Products

About Flowmeters and Totalizers

Flowmeters measure the rate of flow for a liquid or a gas. Totalizers measure the cumulative flow volume. Flowmeter/totalizers display both the flow rate and the cumulative flow volume.

A 304 stainless steel case protects these flowmeters from blows that could shatter the glass body. They measure the flow rate of water and can also be used with air. All install directly in your pipeline. Fittings are 316 stainless steel for corrosion resistance in harsh environments.

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

Glass Body with 316 Stainless Steel Fittings
Pipe Connections	Overall Ht.	Flow Range, gpm	Accuracy	Max. Pressure	Temp. Range, °F	Case Material	Window Material	Seal Material	Mounting Orientation	Features		Each
Gallons per Minute
1/2 NPT Female	7 3/4"	0.05 to 0.5	±5%	200 psi @ 70° F	33° to 200°	304 Stainless Steel	Polycarbonate Plastic	Fluoroelastomer Rubber	Vertical	Air Flow Scale (0.2-2 scfm)	0000000	0000000
1/2 NPT Female	7 3/4"	0.1 to 1	±5%	200 psi @ 70° F	33° to 200°	304 Stainless Steel	Polycarbonate Plastic	Fluoroelastomer Rubber	Vertical	Air Flow Scale (0.4-4 scfm)	0000000	000000
1/2 NPT Female	7 3/4"	0.2 to 2	±5%	200 psi @ 70° F	33° to 200°	304 Stainless Steel	Polycarbonate Plastic	Fluoroelastomer Rubber	Vertical	Air Flow Scale (0.82-8.2 scfm)	0000000	000000
3/4 NPT Female	19 11/16"	0.06 to 0.64	±2%	200 psi @ 70° F	33° to 200°	304 Stainless Steel	Polycarbonate Plastic	Fluoroelastomer Rubber	Vertical	Air Flow Scale (0.3-2.7 scfm)	0000000	000000
3/4 NPT Female	19 11/16"	0.14 to 1.44	±2%	200 psi @ 70° F	33° to 200°	304 Stainless Steel	Polycarbonate Plastic	Fluoroelastomer Rubber	Vertical	Air Flow Scale (0.61-6.1 scfm)	0000000	000000
3/4 NPT Female	19 11/16"	0.3 to 3	±2%	200 psi @ 70° F	33° to 200°	304 Stainless Steel	Polycarbonate Plastic	Fluoroelastomer Rubber	Vertical	Air Flow Scale (1.2-12 scfm)	0000000	000000
3/4 NPT Female	19 11/16"	0.52 to 5.2	±2%	200 psi @ 70° F	33° to 200°	304 Stainless Steel	Polycarbonate Plastic	Fluoroelastomer Rubber	Vertical	Air Flow Scale (2.2-22 scfm)	0000000	000000
3/4 NPT Female	19 11/16"	1.2 to 12	±2%	200 psi @ 70° F	33° to 200°	304 Stainless Steel	Polycarbonate Plastic	Fluoroelastomer Rubber	Vertical	Air Flow Scale (5-50 scfm)	0000000	00000000
3/4 NPT Female	19 11/16"	2 to 21.6	±2%	200 psi @ 70° F	33° to 200°	304 Stainless Steel	Polycarbonate Plastic	Fluoroelastomer Rubber	Vertical	Air Flow Scale (10-100 scfm)	0000000	00000000

Panel-Mount Flowmeters for Air

Monitor the flow rate of compressed air from your instrument panel—these flowmeters have fittings on the back for panel mounting.

Flowmeters with a flow-control knob let you open and close the valve at the inlet to adjust the flow rate within the range.

Certificate of calibration traceable to NIST states that the flowmeter has passed a test for accuracy.

Flowmeters with two pipe sizes have internal NPT female threads and external NPT male threads.

316 stainless steel fittings are more corrosion resistant than brass and PVC fittings.

Optional repair kit includes replacement seals.

Flowmeter

Flowmeter with Flow-Control Knob

Acrylic Plastic Body with Brass Fittings
Pipe Connections	Overall Ht.	Ctr.-to-Ctr. Ht.	Accuracy	Max. Pressure	Temp. Range, °F	Seal Material	Mounting Orientation	Certification	Choose a Flow Range		Each
Standard Cubic Feet per Minute
1/4 NPT Female	4 1/8"	3"	±6%	100 psi @ 70° F	33° to 100°	EPR Rubber	Vertical	__	0.4 to 4 scfm	00000000	000000
1/4 NPT Female	4 1/8"	3"	±6%	100 psi @ 70° F	33° to 100°	EPR Rubber	Vertical	Calibration Certificate Traceable to NIST	0.4 to 4 scfm	0000000	000000
Standard Cubic Feet per Hour
1/4 NPT Female	4 1/8"	3"	±6%	100 psi @ 70° F	33° to 100°	EPR Rubber	Vertical	__	2 to 20 scfh, 3 to 30 scfh, 6 to 60 scfh, 10 to 100 scfh, 15 to 180 scfh	00000000	00000
1/4 NPT Female	4 1/8"	3"	±6%	100 psi @ 70° F	33° to 100°	EPR Rubber	Vertical	Calibration Certificate Traceable to NIST	2 to 20 scfh, 3 to 30 scfh, 6 to 60 scfh, 10 to 100 scfh, 15 to 180 scfh	0000000	000000
Acrylic Plastic Body with Brass Fittings and Flow-Control Knob
Standard Cubic Feet per Minute
1/4 NPT Female	4 1/8"	3"	±6%	100 psi @ 70° F	33° to 100°	EPR Rubber	Vertical	__	0.4 to 4 scfm	00000000	00000
1/4 NPT Female	4 1/8"	3"	±6%	100 psi @ 70° F	33° to 100°	EPR Rubber	Vertical	Calibration Certificate Traceable to NIST	0.4 to 4 scfm	0000000	000000
Standard Cubic Feet per Hour
1/4 NPT Female	4 1/8"	3"	±6%	100 psi @ 70° F	33° to 100°	EPR Rubber	Vertical	__	2 to 20 scfh, 3 to 30 scfh, 6 to 60 scfh, 10 to 100 scfh, 15 to 180 scfh	00000000	00000
1/4 NPT Female	4 1/8"	3"	±6%	100 psi @ 70° F	33° to 100°	EPR Rubber	Vertical	Calibration Certificate Traceable to NIST	2 to 20 scfh, 3 to 30 scfh, 6 to 60 scfh, 10 to 100 scfh, 15 to 180 scfh	0000000	000000
Acrylic Plastic Body with PVC Plastic Fittings
Standard Cubic Feet per Minute
1/2 NPT Female	14 1/2"	12 1/4"	±2%	100 psi @ 70° F	33° to 100°	EPR Rubber	Vertical	__	2 to 20 scfm, 4.2 to 42 scfm	00000000	000000
1/2 NPT Female	14 1/2"	12 1/4"	±2%	100 psi @ 70° F	33° to 100°	EPR Rubber	Vertical	Calibration Certificate Traceable to NIST	2 to 20 scfm, 4.2 to 42 scfm	00000000	000000
1 NPT Male	9 1/8"	6 1/2"	±4%	100 psi @ 70° F	33° to 100°	EPR Rubber	Vertical	__	4 to 40 scfm, 6 to 60 scfm	00000000	000000
1 NPT Male	9 1/8"	6 1/2"	±4%	100 psi @ 70° F	33° to 100°	EPR Rubber	Vertical	Calibration Certificate Traceable to NIST	4 to 40 scfm, 6 to 60 scfm	00000000	000000
1/4 NPT Female × 1/2 NPT Male	6 7/8"	5"	±4%	100 psi @ 70° F	33° to 100°	EPR Rubber	Vertical	__	0.8 to 8.2 scfm, 2.3 to 23 scfm	00000000	00000
1/4 NPT Female × 1/2 NPT Male	6 7/8"	5"	±4%	100 psi @ 70° F	33° to 100°	EPR Rubber	Vertical	Calibration Certificate Traceable to NIST	0.8 to 8.2 scfm, 2.3 to 23 scfm	00000000	000000
1/4 NPT Female × 1/2 NPT Male	8 7/16"	6 7/16"	±3%	100 psi @ 70° F	33° to 100°	EPR Rubber	Vertical	__	0.8 to 8.2 scfm, 2.2 to 22 scfm	00000000	00000
1/4 NPT Female × 1/2 NPT Male	8 7/16"	6 7/16"	±3%	100 psi @ 70° F	33° to 100°	EPR Rubber	Vertical	Calibration Certificate Traceable to NIST	0.8 to 8.2 scfm, 2.2 to 22 scfm	00000000	000000
Acrylic Plastic Body with PVC Plastic Fittings and Flow-Control Knob
Standard Cubic Feet per Minute
1/2 NPT Female	14 1/2"	12 1/4"	±2%	100 psi @ 70° F	33° to 100°	EPR Rubber	Vertical	__	2 to 20 scfm, 4.2 to 42 scfm	00000000	000000
1/2 NPT Female	14 1/2"	12 1/4"	±2%	100 psi @ 70° F	33° to 100°	EPR Rubber	Vertical	Calibration Certificate Traceable to NIST	2 to 20 scfm, 4.2 to 42 scfm	00000000	000000
1 NPT Male	9 1/8"	6 1/2"	±4%	100 psi @ 70° F	33° to 100°	EPR Rubber	Vertical	__	4 to 40 scfm, 6 to 60 scfm	00000000	000000
1 NPT Male	9 1/8"	6 1/2"	±4%	100 psi @ 70° F	33° to 100°	EPR Rubber	Vertical	Calibration Certificate Traceable to NIST	4 to 40 scfm, 6 to 60 scfm	00000000	000000
1/4 NPT Female × 1/2 NPT Male	6 7/8"	5"	±4%	100 psi @ 70° F	33° to 100°	EPR Rubber	Vertical	__	0.8 to 8.2 scfm, 2.3 to 23 scfm	00000000	00000
1/4 NPT Female × 1/2 NPT Male	6 7/8"	5"	±4%	100 psi @ 70° F	33° to 100°	EPR Rubber	Vertical	Calibration Certificate Traceable to NIST	0.8 to 8.2 scfm, 2.3 to 23 scfm	00000000	000000
1/4 NPT Female × 1/2 NPT Male	8 7/16"	6 7/16"	±3%	100 psi @ 70° F	33° to 100°	EPR Rubber	Vertical	__	0.8 to 8.2 scfm, 2.2 to 22 scfm	00000000	000000
1/4 NPT Female × 1/2 NPT Male	8 7/16"	6 7/16"	±3%	100 psi @ 70° F	33° to 100°	EPR Rubber	Vertical	Calibration Certificate Traceable to NIST	0.8 to 8.2 scfm, 2.2 to 22 scfm	00000000	000000
Acrylic Plastic Body with 316 Stainless Steel Fittings and Flow-Control Knob
Standard Cubic Feet per Minute
1/4 NPT Female	4 1/8"	3"	±6%	100 psi @ 70° F	33° to 100°	EPR Rubber	Vertical	__	0.4 to 4 scfm	00000000	000000
1/4 NPT Female	4 1/8"	3"	±6%	100 psi @ 70° F	33° to 100°	EPR Rubber	Vertical	Calibration Certificate Traceable to NIST	0.4 to 4 scfm	0000000	000000
1/2 NPT Female	14 1/2"	12 1/4"	±2%	100 psi @ 70° F	33° to 100°	EPR Rubber	Vertical	__	2 to 20 scfm, 4.2 to 42 scfm	00000000	000000
1/2 NPT Female	14 1/2"	12 1/4"	±2%	100 psi @ 70° F	33° to 100°	EPR Rubber	Vertical	Calibration Certificate Traceable to NIST	2 to 20 scfm, 4.2 to 42 scfm	00000000	000000
1 NPT Male	9 1/8"	6 1/2"	±4%	100 psi @ 70° F	33° to 100°	EPR Rubber	Vertical	__	4 to 40 scfm, 6 to 60 scfm	00000000	000000
1 NPT Male	9 1/8"	6 1/2"	±4%	100 psi @ 70° F	33° to 100°	EPR Rubber	Vertical	Calibration Certificate Traceable to NIST	4 to 40 scfm, 6 to 60 scfm	00000000	000000
1/4 NPT Female × 1/2 NPT Male	6 7/8"	5"	±4%	100 psi @ 70° F	33° to 100°	EPR Rubber	Vertical	__	0.8 to 8.2 scfm, 2.3 to 23 scfm	00000000	000000
1/4 NPT Female × 1/2 NPT Male	6 7/8"	5"	±4%	100 psi @ 70° F	33° to 100°	EPR Rubber	Vertical	Calibration Certificate Traceable to NIST	0.8 to 8.2 scfm, 2.3 to 23 scfm	00000000	000000
1/4 NPT Female × 1/2 NPT Male	8 7/16"	6 7/16"	±3%	100 psi @ 70° F	33° to 100°	EPR Rubber	Vertical	__	0.8 to 8.2 scfm, 2.2 to 22 scfm	00000000	000000
1/4 NPT Female × 1/2 NPT Male	8 7/16"	6 7/16"	±3%	100 psi @ 70° F	33° to 100°	EPR Rubber	Vertical	Calibration Certificate Traceable to NIST	0.8 to 8.2 scfm, 2.2 to 22 scfm	00000000	000000
Standard Cubic Feet per Hour
1/4 NPT Female	4 1/8"	3"	±6%	100 psi @ 70° F	33° to 100°	EPR Rubber	Vertical	__	2 to 20 scfh, 3 to 30 scfh, 6 to 60 scfh, 10 to 100 scfh, 15 to 180 scfh	00000000	000000
1/4 NPT Female	4 1/8"	3"	±6%	100 psi @ 70° F	33° to 100°	EPR Rubber	Vertical	Calibration Certificate Traceable to NIST	2 to 20 scfh, 3 to 30 scfh, 6 to 60 scfh, 10 to 100 scfh, 15 to 180 scfh	0000000	000000

Optional Repair Kits

	For Flowmeters		For Flowmeters with Flow-Control Knob
For Flowmeter Overall Ht.		Each		Each
4 1/8"	0000000	000000	0000000	000000
6 7/8", 8 7/16"	0000000	00000	0000000	00000
9 1/8"	000000	00	0000000	00000
14 1/2"	0000000	00000	000000	00

Impact-Resistant Panel-Mount Flowmeters for Air

Flowmeter with Polycarbonate Plastic Case

Flowmeter with
Polycarbonate Plastic
Case and Flow-Control Knob

Flowmeter with 304
Stainless Steel Case
and Flow-Control Knob

For protection against damage, these flowmeters have a rugged, impact-resistant case. They measure the flow rate of compressed air in your system and have fittings on the back for installation in instrument panels.

Flowmeters with a flow-control knob let you open and close the valve at the inlet to adjust the flow rate within the range.

304 stainless steel case is more corrosion resistant and durable than a polycarbonate case.

316 stainless steel fittings are more corrosion resistant than 303 stainless steel fittings.

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

						Temp. Range, °F
Pipe Connections	Overall Ht.	Ctr.-to-Ctr. Ht.	Accuracy	Flow Range, scfh	Max. Pressure	Min.	Max.	Case Material	Window Material	Seal Material	Mounting Orientation		Each
Polycarbonate Plastic Body with 303 Stainless Steel Fittings
Standard Cubic Feet per Hour
1/8 NPT Female	4 13/16"	3"	±4%	0.1 to 1	100 psi @ 70° F	Not Rated	150°	Polycarbonate Plastic	__	Fluoroelastomer Rubber	Vertical	0000000	000000
1/8 NPT Female	4 13/16"	3"	±4%	0.2 to 2.5	100 psi @ 70° F	Not Rated	150°	Polycarbonate Plastic	__	Fluoroelastomer Rubber	Vertical	0000000	00000
1/8 NPT Female	4 13/16"	3"	±4%	0.4 to 5	100 psi @ 70° F	Not Rated	150°	Polycarbonate Plastic	__	Fluoroelastomer Rubber	Vertical	0000000	00000
1/8 NPT Female	4 13/16"	3"	±4%	1 to 11	100 psi @ 70° F	Not Rated	150°	Polycarbonate Plastic	__	Fluoroelastomer Rubber	Vertical	0000000	00000
1/8 NPT Female	4 13/16"	3"	±4%	2 to 22	100 psi @ 70° F	Not Rated	150°	Polycarbonate Plastic	__	Fluoroelastomer Rubber	Vertical	0000000	00000
1/8 NPT Female	4 13/16"	3"	±4%	4 to 60	100 psi @ 70° F	Not Rated	150°	Polycarbonate Plastic	__	Fluoroelastomer Rubber	Vertical	0000000	00000
Polycarbonate Plastic Body with 303 Stainless Steel Fittings and Flow-Control Knob
Standard Cubic Feet per Hour
1/8 NPT Female	4 13/16"	3"	±4%	0.1 to 1	100 psi @ 70° F	Not Rated	150°	Polycarbonate Plastic	__	Fluoroelastomer Rubber	Vertical	0000000	00000
1/8 NPT Female	4 13/16"	3"	±4%	0.2 to 2.5	100 psi @ 70° F	Not Rated	150°	Polycarbonate Plastic	__	Fluoroelastomer Rubber	Vertical	0000000	00000
1/8 NPT Female	4 13/16"	3"	±4%	0.4 to 5	100 psi @ 70° F	Not Rated	150°	Polycarbonate Plastic	__	Fluoroelastomer Rubber	Vertical	0000000	00000
1/8 NPT Female	4 13/16"	3"	±4%	1 to 11	100 psi @ 70° F	Not Rated	150°	Polycarbonate Plastic	__	Fluoroelastomer Rubber	Vertical	0000000	00000
1/8 NPT Female	4 13/16"	3"	±4%	2 to 22	100 psi @ 70° F	Not Rated	150°	Polycarbonate Plastic	__	Fluoroelastomer Rubber	Vertical	0000000	00000
1/8 NPT Female	4 13/16"	3"	±4%	4 to 60	100 psi @ 70° F	Not Rated	150°	Polycarbonate Plastic	__	Fluoroelastomer Rubber	Vertical	0000000	00000
Glass Body with 316 Stainless Steel Fittings and Flow-Control Knob
Standard Cubic Feet per Hour
1/4 NPT Female	6 1/16"	4 9/16"	±6%	0.04 to 0.42	200 psi @ 70° F	33°	250°	304 Stainless Steel	Polycarbonate Plastic	Fluoroelastomer Rubber	Vertical	0000000	000000
1/4 NPT Female	6 1/16"	4 9/16"	±6%	0.4 to 4	200 psi @ 70° F	33°	250°	304 Stainless Steel	Polycarbonate Plastic	Fluoroelastomer Rubber	Vertical	0000000	000000
1/4 NPT Female	6 1/16"	4 9/16"	±6%	0.82 to 8.2	200 psi @ 70° F	33°	250°	304 Stainless Steel	Polycarbonate Plastic	Fluoroelastomer Rubber	Vertical	0000000	000000
1/4 NPT Female	6 1/16"	4 9/16"	±6%	1 to 28	200 psi @ 70° F	33°	250°	304 Stainless Steel	Polycarbonate Plastic	Fluoroelastomer Rubber	Vertical	0000000	000000
1/4 NPT Female	6 1/16"	4 9/16"	±6%	5 to 90	200 psi @ 70° F	33°	250°	304 Stainless Steel	Polycarbonate Plastic	Fluoroelastomer Rubber	Vertical	0000000	000000

High-Accuracy Panel-Mount Flowmeters for Air

Choose these flowmeters for highly accurate flow rate measurements. They have fittings on the back for installation in instrument panels. The flow-control knob lets you open and close the valve at the inlet to adjust the flow rate within the range.

303 stainless steel fittings are more corrosion resistant and durable than PVC fittings.

Acrylic Plastic Body with PVC Plastic Fittings and Flow-Control Knob
Pipe Connections	Overall Ht.	Ctr.-to-Ctr. Ht.	Flow Range, scfm	Accuracy	Max. Pressure	Max. Temp., °F	Seal Material	Mounting Orientation		Each
Standard Cubic Feet per Minute
1 NPT Female	10 7/8"	8 1/2"	4 to 50	±2%	100 psi @ 70° F	150°	Buna-N Rubber	Vertical	0000000	0000000
Acrylic Plastic Body with 303 Stainless Steel Fittings and Flow-Control Knob
Standard Cubic Feet per Minute
1/4 NPT Female	6 5/8"	5 1/2"	0.5 to 5	±3%	100 psi @ 70° F	150°	Fluoroelastomer Rubber	Vertical	0000000	000000
1/4 NPT Female	6 5/8"	5 1/2"	4 to 20	±3%	100 psi @ 70° F	150°	Fluoroelastomer Rubber	Vertical	0000000	000000

Flowmeters for Air

Measure the flow rate of compressed air. These flowmeters have fittings on each end for installation directly in your pipeline.

316 stainless steel fittings are more corrosion resistant and durable than PVC fittings.

Optional repair kit includes replacement seals.

With Male Connections

With Female Connections

Acrylic Plastic Body with PVC Plastic Fittings
Pipe Connections	Overall Ht.	Accuracy	Max. Pressure	Temp. Range, °F	Seal Material	Mounting Orientation	Choose a Flow Range		Each
Standard Cubic Feet per Minute
1/4 NPT Male	4 3/4"	±6%	100 psi @ 70° F	33° to 100°	EPR Rubber	Vertical	0.4 to 4 scfm	0000000	000000
1/2 NPT Female	6 1/2"	±5%	100 psi @ 70° F	33° to 100°	EPR Rubber	Vertical	0.8 to 8 scfm, 2 to 20 scfm	0000000	00000
1/2 NPT Female	9 1/4"	±3%	100 psi @ 70° F	33° to 100°	EPR Rubber	Vertical	0.8 to 8.2 scfm, 2 to 21 scfm	0000000	000000
3/4 NPT Female	14 13/16"	±2%	100 psi @ 70° F	33° to 100°	EPR Rubber	Vertical	2 to 20 scfm, 4 to 42 scfm	0000000	000000
1 NPT Female	8 3/8"	±4%	100 psi @ 70° F	33° to 100°	EPR Rubber	Vertical	4 to 40 scfm, 6 to 60 scfm	0000000	000000
Standard Cubic Feet per Hour
1/4 NPT Male	4 3/4"	±6%	100 psi @ 70° F	33° to 100°	EPR Rubber	Vertical	6 to 70 scfh, 10 to 100 scfh, 10 to 180 scfh	0000000	00000
Acrylic Plastic Body with 316 Stainless Steel Fittings
Standard Cubic Feet per Minute
1/2 NPT Female	6 1/2"	±5%	100 psi @ 70° F	33° to 100°	EPR Rubber	Vertical	1.5 to 15 scfm	0000000	000000
1/2 NPT Female	9 1/4"	±3%	100 psi @ 70° F	33° to 100°	EPR Rubber	Vertical	0.82 to 8.2 scfm	0000000	000000

Optional Repair Kits

For Flowmeter Overall Ht.		Each
4 3/4"	0000000	000000
6 1/2", 9 1/4"	0000000	00000
8 3/8"	0000000	00000

Easy-Read Flowmeters for Air

Horizontal Mount

Vertical Mount

The prominent dial makes it easy to see the flow rate of compressed air from a distance. These flowmeters measure the flow rate of compressed air and are designed for direct installation in your pipeline.

For the most accurate readings, install these flowmeters a minimum distance of at least 10 times the pipe diameter from any fittings.

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

Bronze Body with Bronze Fittings
Pipe Connections	End-to-End Lg.	Overall Ht.	Flow Range, scfm	Accuracy	Max. Pressure	Temp. Range, °F	Seal Material	Dial Size	Choose a Direction of Flow (Mounting Orientation)		Each
Standard Cubic Feet per Minute
1/4 NPT Female	4 9/16"	6 11/16"	3 to 20	±3%	180 psi @ 70° F	-30° to 212°	Buna-N Rubber	3 1/2"	Left to Right (Horizontal), Right to Left (Horizontal), Bottom to Top (Vertical), Top to Bottom (Vertical)	00000000	0000000
1/2 NPT Female	4 9/16"	6 11/16"	5 to 40	±3%	180 psi @ 70° F	-30° to 212°	Buna-N Rubber	3 1/2"	Left to Right (Horizontal), Right to Left (Horizontal), Bottom to Top (Vertical), Top to Bottom (Vertical)	00000000	000000
3/4 NPT Female	4 9/16"	6 11/16"	20 to 150	±3%	180 psi @ 70° F	-30° to 212°	Buna-N Rubber	3 1/2"	Left to Right (Horizontal), Right to Left (Horizontal), Bottom to Top (Vertical), Top to Bottom (Vertical)	00000000	000000
1 NPT Female	4 9/16"	6 15/16"	40 to 300	±3%	180 psi @ 70° F	-30° to 212°	Buna-N Rubber	3 1/2"	Left to Right (Horizontal), Right to Left (Horizontal), Bottom to Top (Vertical), Top to Bottom (Vertical)	00000000	000000
1 1/2 NPT Female	4 9/16"	7 5/8"	50 to 600	±3%	180 psi @ 70° F	-30° to 212°	Buna-N Rubber	3 1/2"	Left to Right (Horizontal), Right to Left (Horizontal), Bottom to Top (Vertical), Top to Bottom (Vertical)	00000000	000000
2 NPT Female	4 9/16"	8 3/8"	100 to 800	±3%	180 psi @ 70° F	-30° to 212°	Buna-N Rubber	3 1/2"	Left to Right (Horizontal), Right to Left (Horizontal), Bottom to Top (Vertical), Top to Bottom (Vertical)	00000000	000000
2 NPT Female	4 9/16"	8 3/8"	150 to 1,000	±3%	180 psi @ 70° F	-30° to 212°	Buna-N Rubber	3 1/2"	Left to Right (Horizontal), Right to Left (Horizontal), Bottom to Top (Vertical), Top to Bottom (Vertical)	00000000	000000
3 NPT Female	4 9/16"	9 13/16"	300 to 2,000	±3%	180 psi @ 70° F	-30° to 212°	Buna-N Rubber	3 1/2"	Left to Right (Horizontal), Right to Left (Horizontal), Bottom to Top (Vertical), Top to Bottom (Vertical)	00000000	00000000

Easy-Read High-Pressure Flowmeters for Air

With a prominent dial instead of a scale, these flowmeters are easier to read from a distance than other high-pressure flowmeters for air. They’re rated for pressures up to 3,000 psi. They measure the flow rate of compressed air and are designed for installation directly in your pipeline.

2 1/2" Dial Size
Pipe Connections	End-to-End Lg.	Flow Range	Accuracy	Max. Pressure	Temp. Range, °F	Seal Material	Mounting Orientation		Each
Aluminum Body
Standard Cubic Feet per Minute
1/4 NPT Female	3 5/8"	0 to 10 scfm	±5%	3,000 psi @ 70° F	-22° to 150°	Buna-N Rubber	Any Position	0000000	0000000
1/4 NPT Female	3 5/8"	0 to 15 scfm	±5%	3,000 psi @ 70° F	-22° to 150°	Buna-N Rubber	Any Position	0000000	000000
1/4 NPT Female	3 5/8"	0 to 20 scfm	±5%	3,000 psi @ 70° F	-22° to 150°	Buna-N Rubber	Any Position	0000000	000000
1/4 NPT Female	3 5/8"	0 to 25 scfm	±5%	3,000 psi @ 70° F	-22° to 150°	Buna-N Rubber	Any Position	0000000	000000
1/2 NPT Female	5 3/4"	0 to 50 scfm	±5%	3,000 psi @ 70° F	-22° to 150°	Buna-N Rubber	Any Position	0000000	000000
1/2 NPT Female	5 3/4"	0 to 100 scfm	±5%	3,000 psi @ 70° F	-22° to 150°	Buna-N Rubber	Any Position	0000000	000000
4 1/2" Dial Size
Aluminum Body
Standard Cubic Feet per Minute
1/4 NPT Female	3 5/8"	0 to 10 scfm	±5%	3,000 psi @ 70° F	-22° to 150°	Buna-N Rubber	Any Position	0000000	000000
1/4 NPT Female	3 5/8"	0 to 15 scfm	±5%	3,000 psi @ 70° F	-22° to 150°	Buna-N Rubber	Any Position	0000000	000000
1/4 NPT Female	3 5/8"	0 to 20 scfm	±5%	3,000 psi @ 70° F	-22° to 150°	Buna-N Rubber	Any Position	0000000	000000
1/4 NPT Female	3 5/8"	0 to 25 scfm	±5%	3,000 psi @ 70° F	-22° to 150°	Buna-N Rubber	Any Position	0000000	000000
1/2 NPT Female	5 3/4"	0 to 50 scfm	±5%	3,000 psi @ 70° F	-22° to 150°	Buna-N Rubber	Any Position	0000000	000000
1/2 NPT Female	5 3/4"	0 to 100 scfm	±5%	3,000 psi @ 70° F	-22° to 150°	Buna-N Rubber	Any Position	0000000	000000

High-Pressure Flowmeters for Air

Flowmeter

Flowmeter with Pressure Gauge

Rated for at least six times the pressure of standard flowmeters for air, these can withstand pressures of at least 600 psi. They measure the flow rate of compressed air in your system and directly install in your pipeline. The dual scale shows readings in both standard cubic feet per minute and cubic centimeters per minute and rotates 360° for viewing at multiple angles.

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

			Pressure Gauge
Pipe Connections	End-to-End Lg.	Accuracy	Range	Dial Size	Max. Pressure	Temp. Range, °F	Seal Material	Mounting Orientation	Choose a Flow Range		Each
Aluminum Body with Aluminum Fittings
Standard Cubic Feet per Minute, Cubic Centimeters per Minute
1/4 NPTF Female	4 13/16"	±5%	__	__	1,000 psi @ 70° F	-20° to 240°	Fluoroelastomer Rubber	Any Position	0.5 to 5 scfm, 1 to 10 scfm, 2 to 20 scfm, 3 to 30 scfm	0000000	0000000
1/4 NPTF Female	6 1/8"	±5%	0 to 160	2 1/2"	600 psi @ 70° F	-20° to 240°	Fluoroelastomer Rubber	Any Position	0.5 to 5 scfm, 1 to 10 scfm, 2 to 20 scfm, 3 to 30 scfm	0000000	000000
1/2 NPTF Female	6 5/8"	±2%	__	__	1,000 psi @ 70° F	-20° to 240°	Fluoroelastomer Rubber	Any Position	3 to 25 scfm, 5 to 50 scfm, 10 to 100 scfm, 15 to 150 scfm	0000000	000000
1/2 NPTF Female	8"	±2%	0 to 160	2 1/2"	600 psi @ 70° F	-20° to 240°	Fluoroelastomer Rubber	Any Position	3 to 25 scfm, 5 to 50 scfm, 10 to 100 scfm, 15 to 150 scfm	0000000	000000
3/4 NPTF Female	7 1/4"	±2%	__	__	1,000 psi @ 70° F	-20° to 240°	Fluoroelastomer Rubber	Any Position	5 to 50 scfm, 10 to 100 scfm, 15 to 150 scfm, 25 to 250 scfm	0000000	000000
3/4 NPTF Female	8 15/16"	±2%	0 to 160	2 1/2"	600 psi @ 70° F	-20° to 240°	Fluoroelastomer Rubber	Any Position	5 to 50 scfm, 10 to 100 scfm, 15 to 150 scfm, 25 to 250 scfm	0000000	000000
1 NPTF Female	7 1/4"	±2%	__	__	1,000 psi @ 70° F	-20° to 240°	Fluoroelastomer Rubber	Any Position	15 to 150 scfm, 25 to 250 scfm	0000000	000000
1 NPTF Female	8 15/16"	±2%	0 to 160	2 1/2"	600 psi @ 70° F	-20° to 240°	Fluoroelastomer Rubber	Any Position	15 to 150 scfm, 25 to 250 scfm	0000000	000000
1 1/2 NPTF Female	12 1/4"	±2%	__	__	1,000 psi @ 70° F	-20° to 240°	Fluoroelastomer Rubber	Any Position	40 to 400 scfm	0000000	000000
1 1/2 NPTF Female	13 13/16"	±2%	0 to 160	2 1/2"	600 psi @ 70° F	-20° to 240°	Fluoroelastomer Rubber	Any Position	40 to 400 scfm	0000000	00000000

Flow Transmitters for Air

Calibrated for compressed air, these transmitters send flow-rate readings to data recorders, loggers, and displays. They have compression tube connections that bite down on hard metal and plastic tubing for a secure seal. The digital display shows the flow rate, so these transmitters can also be used as flowmeters. Fittings are 316 stainless steel for corrosion resistance in harsh environments.

								Output
Tube Connections	End-to-End Lg.	Flow Range	Accuracy	Max. Pressure	Temp. Range, °F	Seal Material	Mounting Orientation	Signal Connection	Signal	Voltage	Plug Type		Each
ABS Plastic Body with 316 Stainless Steel
Cubic Centimeters per Minute
Male Compression for 1/8" Tube OD	4 7/8"	1 to 50 cc/min.	±3%	150 psi @ 70° F	32° to 122°	Elastomer Rubber	Horizontal	RS-232 Port	4 to 20 mA	120V AC 240V AC	Two Prong	0000000	000000000
Male Compression for 1/8" Tube OD	4 7/8"	4 to 200 cc/min.	±3%	150 psi @ 70° F	32° to 122°	Elastomer Rubber	Horizontal	RS-232 Port	4 to 20 mA	120V AC 240V AC	Two Prong	0000000	00000000
Male Compression for 1/8" Tube OD	4 7/8"	10 to 500 cc/min.	±3%	150 psi @ 70° F	32° to 122°	Elastomer Rubber	Horizontal	RS-232 Port	4 to 20 mA	120V AC 240V AC	Two Prong	0000000	00000000
Liters per Minute
Male Compression for 1/8" Tube OD	4 7/8"	0.02 to 1 lpm	±3%	150 psi @ 70° F	32° to 122°	Elastomer Rubber	Horizontal	RS-232 Port	4 to 20 mA	120V AC 240V AC	Two Prong	0000000	00000000
Male Compression for 1/8" Tube OD	4 7/8"	0.1 to 5 lpm	±3%	150 psi @ 70° F	32° to 122°	Elastomer Rubber	Horizontal	RS-232 Port	4 to 20 mA	120V AC 240V AC	Two Prong	0000000	00000000

About Flowmeters and Totalizers

Impact-Resistant Flowmeters for Water

Panel-Mount Flowmeters for Air

Impact-Resistant Panel-Mount Flowmeters for Air

High-Accuracy Panel-Mount Flowmeters for Air

Flowmeters for Air

Easy-Read Flowmeters for Air

Easy-Read High-Pressure Flowmeters for Air

High-Pressure Flowmeters for Air

Flow Transmitters for Air