NPTF Flowmeters | McMaster-Carr

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131 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.

With Female Connections

With Male Connections

A spring piston instead of a float allows these flowmeters to measure flow rate in any mounting orientation. As liquid passes through, it pushes an indicator up the scale, showing you the flow rate. They have union fittings on both ends, making it easy to position the scale so it’s visible.

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

Choose a fitting material that is compatible with the liquid you intend to run through your line. Polysulfone fittings work with a wide range of chemicals. However, they can crack from impact or when overtightened. Brass fittings resist impact better than polysulfone fittings.

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

Polysulfone Plastic Fittings
Flow Range, gpm	End-to-End Lg.	Accuracy	Max. Pressure	Temp. Range, °F	Body Material	Seal Material	Mounting Orientation	Features		Each
1 NPTF Male Pipe Connection
0.5 to 4	5 1/4"	±5%	325 psi @ 70° F	33° to 200°	Polysulfone Plastic	Buna-N Rubber	Any	__	0000000	0000000
1 to 7	5 1/4"	±5%	325 psi @ 70° F	33° to 200°	Polysulfone Plastic	Buna-N Rubber	Any	__	0000000	000000
1 to 10	5 1/4"	±5%	325 psi @ 70° F	33° to 200°	Polysulfone Plastic	Buna-N Rubber	Any	__	0000000	000000
1 to 16	5 1/4"	±5%	325 psi @ 70° F	33° to 200°	Polysulfone Plastic	Buna-N Rubber	Any	__	0000000	000000
3 to 18	5 1/4"	±5%	325 psi @ 70° F	33° to 200°	Polysulfone Plastic	Buna-N Rubber	Any	__	0000000	000000
4 to 28	5 1/4"	±5%	325 psi @ 70° F	33° to 200°	Polysulfone Plastic	Buna-N Rubber	Any	__	0000000	000000
Brass Fittings
1/2 NPTF Female Pipe Connection
0.5 to 4	7 3/4"	±5%	325 psi @ 70° F	33° to 200°	Polysulfone Plastic	Buna-N Rubber	Any	__	0000000	000000
0.5 to 5	7 3/16"	±2%	325 psi @ 70° F	33° to 200°	Polycarbonate Plastic	Fluoroelastomer Rubber	Any	Union Fittings	0000000	000000
1 to 7	7 3/4"	±5%	325 psi @ 70° F	33° to 200°	Polysulfone Plastic	Buna-N Rubber	Any	__	0000000	000000
1 to 10	7 3/16"	±2%	325 psi @ 70° F	33° to 200°	Polycarbonate Plastic	Fluoroelastomer Rubber	Any	Union Fittings	0000000	000000
1 to 10	7 3/4"	±5%	325 psi @ 70° F	33° to 200°	Polysulfone Plastic	Buna-N Rubber	Any	__	0000000	000000
1 to 16	7 3/4"	±5%	325 psi @ 70° F	33° to 200°	Polysulfone Plastic	Buna-N Rubber	Any	__	0000000	000000
3/4 NPTF Male Pipe Connection
0.5 to 4	8 1/4"	±5%	325 psi @ 70° F	33° to 200°	Polysulfone Plastic	Buna-N Rubber	Any	__	0000000	000000
1 to 10	8 1/4"	±5%	325 psi @ 70° F	33° to 200°	Polysulfone Plastic	Buna-N Rubber	Any	__	0000000	000000
1 to 16	8 1/4"	±5%	325 psi @ 70° F	33° to 200°	Polysulfone Plastic	Buna-N Rubber	Any	__	0000000	000000
4 to 28	8 1/4"	±5%	325 psi @ 70° F	33° to 200°	Polysulfone Plastic	Buna-N Rubber	Any	__	0000000	000000
1 1/2 NPTF Female Pipe Connection
2 to 25	8 13/16"	±5%	325 psi @ 70° F	33° to 250°	Polysulfone Plastic	Buna-N Rubber	Any	__	00000000	000000
5 to 50	8 13/16"	±5%	325 psi @ 70° F	33° to 250°	Polysulfone Plastic	Buna-N Rubber	Any	__	00000000	000000
7 to 75	8 13/16"	±5%	325 psi @ 70° F	33° to 250°	Polysulfone Plastic	Buna-N Rubber	Any	__	00000000	000000
10 to 100	8 13/16"	±5%	325 psi @ 70° F	33° to 250°	Polysulfone Plastic	Buna-N Rubber	Any	__	00000000	000000
2 NPTF Female Pipe Connection
2 to 25	8 13/16"	±5%	325 psi @ 70° F	33° to 250°	Polysulfone Plastic	Buna-N Rubber	Any	__	00000000	000000
5 to 50	8 13/16"	±5%	325 psi @ 70° F	33° to 250°	Polysulfone Plastic	Buna-N Rubber	Any	__	00000000	000000
7 to 75	8 13/16"	±5%	325 psi @ 70° F	33° to 250°	Polysulfone Plastic	Buna-N Rubber	Any	__	00000000	000000
10 to 100	8 13/16"	±5%	325 psi @ 70° F	33° to 250°	Polysulfone Plastic	Buna-N Rubber	Any	__	00000000	000000
2 1/2 NPTF Female Pipe Connection
20 to 200	10 3/4"	±5%	325 psi @ 70° F	33° to 250°	Polysulfone Plastic	Buna-N Rubber	Any	__	00000000	00000000
3 NPTF Female Pipe Connection
25 to 275	10 3/4"	±5%	325 psi @ 70° F	33° to 250°	Polysulfone Plastic	Buna-N Rubber	Any	__	00000000	00000000

High-Temperature and Pressure Flowmeters

With a maximum temperature of 240° F and a maximum pressure of 3,500 psi, these flowmeters measure the flow rate of liquids that are too hot or pressurized for standard flowmeters. As your liquid flows through, it pushes an indicator up the scale, showing you the flow rate. They measure flow correctly in any mounting orientation. Install them inline with your pipe system. They have brass fittings that resist impact better than plastic fittings.

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

Brass Fittings
Flow Range, gpm	End-to-End Lg.	Accuracy	Max. Pressure	Temp. Range, °F	Body Material	Seal Material	Mounting Orientation		Each
1/4 NPTF Female Pipe Connection
0.02 to 0.2	4 13/16"	±7%	3,500 psi @ 70° F	-20° to 240°	Brass	Fluoroelastomer Rubber	Any	0000000	0000000
0.05 to 0.5	4 13/16"	±7%	3,500 psi @ 70° F	-20° to 240°	Brass	Fluoroelastomer Rubber	Any	0000000	000000
0.1 to 1	4 13/16"	±7%	3,500 psi @ 70° F	-20° to 240°	Brass	Fluoroelastomer Rubber	Any	0000000	000000
0.2 to 2	4 13/16"	±7%	3,500 psi @ 70° F	-20° to 240°	Brass	Fluoroelastomer Rubber	Any	0000000	000000
1/2 NPTF Female Pipe Connection
0.2 to 2	6 5/8"	±2%	3,500 psi @ 70° F	-20° to 240°	Brass	Fluoroelastomer Rubber	Any	0000000	000000
0.5 to 5	6 5/8"	±2%	3,500 psi @ 70° F	-20° to 240°	Brass	Fluoroelastomer Rubber	Any	0000000	000000
1 to 15	6 5/8"	±2%	3,500 psi @ 70° F	-20° to 240°	Brass	Fluoroelastomer Rubber	Any	0000000	000000
3/4 NPTF Female Pipe Connection
0.5 to 5	7 1/4"	±2%	3,500 psi @ 70° F	-20° to 240°	Brass	Fluoroelastomer Rubber	Any	0000000	000000
1 to 10	7 1/4"	±2%	3,500 psi @ 70° F	-20° to 240°	Brass	Fluoroelastomer Rubber	Any	0000000	000000
2 to 20	7 1/4"	±2%	3,500 psi @ 70° F	-20° to 240°	Brass	Fluoroelastomer Rubber	Any	0000000	000000
3 to 30	7 1/4"	±2%	3,500 psi @ 70° F	-20° to 240°	Brass	Fluoroelastomer Rubber	Any	0000000	000000
1 NPTF Female Pipe Connection
2 to 20	7 1/4"	±2%	3,500 psi @ 70° F	-20° to 240°	Brass	Fluoroelastomer Rubber	Any	0000000	000000
3 to 30	7 1/4"	±2%	3,500 psi @ 70° F	-20° to 240°	Brass	Fluoroelastomer Rubber	Any	0000000	000000
5 to 50	7 1/4"	±2%	3,500 psi @ 70° F	-20° to 240°	Brass	Fluoroelastomer Rubber	Any	0000000	000000
1 1/4 NPTF Female Pipe Connection
5 to 50	12 1/4"	±2%	3,500 psi @ 70° F	-20° to 240°	Brass	Fluoroelastomer Rubber	Any	0000000	00000000
10 to 100	12 1/4"	±2%	3,500 psi @ 70° F	-20° to 240°	Brass	Fluoroelastomer Rubber	Any	0000000	00000000
10 to 150	12 1/4"	±2%	3,500 psi @ 70° F	-20° to 240°	Brass	Fluoroelastomer Rubber	Any	0000000	00000000
1 1/2 NPTF Female Pipe Connection
10 to 100	12 1/4"	±2%	3,500 psi @ 70° F	-20° to 240°	Brass	Fluoroelastomer Rubber	Any	0000000	00000000
10 to 150	12 1/4"	±2%	3,500 psi @ 70° F	-20° to 240°	Brass	Fluoroelastomer Rubber	Any	0000000	00000000

Variable-Pressure Flowmeters for Gases

Scale

Flowmeter

Flowmeter with Pressure Gauge

Measure the flow rate of gases in applications where pressure fluctuates, such as compressed air systems. These flowmeters have a scale with multiple pressures, so can see your flow rate without having to convert to your system's pressure. As air flows through the meter, it pushes the indicator on the scale. The scale rotates 360°, so you can check the flow rate from any angle. Install these flowmeters directly inline with your pipeline using the fittings on each end. They measure flow rate correctly no matter the mounting orientation.

These flowmeters are calibrated with air but can be used with other gases. If you’re using these with a gas other than air, 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.

Flowmeters with a pressure gauge directly measure pressure as gas flows through the meter, letting you confirm the current pressure with the flow rate on the scale.

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

Flowmeters

Aluminum Fittings
Flow Range, scfm	End-to-End Lg.	Accuracy	Max. Pressure	Temp. Range, °F	Body Material	Seal Material	Mounting Orientation		Each
1/4 NPTF Female Pipe Connection
0.5 to 5	4 13/16"	±5%	1,000 psi @ 70° F	-20° to 240°	Aluminum	Fluoroelastomer Rubber	Any	0000000	0000000
1 to 10	4 13/16"	±5%	1,000 psi @ 70° F	-20° to 240°	Aluminum	Fluoroelastomer Rubber	Any	0000000	000000
2 to 20	4 13/16"	±5%	1,000 psi @ 70° F	-20° to 240°	Aluminum	Fluoroelastomer Rubber	Any	0000000	000000
3 to 30	4 13/16"	±5%	1,000 psi @ 70° F	-20° to 240°	Aluminum	Fluoroelastomer Rubber	Any	0000000	000000
1/2 NPTF Female Pipe Connection
3 to 25	6 5/8"	±2%	1,000 psi @ 70° F	-20° to 240°	Aluminum	Fluoroelastomer Rubber	Any	0000000	000000
5 to 50	6 5/8"	±2%	1,000 psi @ 70° F	-20° to 240°	Aluminum	Fluoroelastomer Rubber	Any	0000000	000000
10 to 100	6 5/8"	±2%	1,000 psi @ 70° F	-20° to 240°	Aluminum	Fluoroelastomer Rubber	Any	0000000	000000
15 to 150	6 5/8"	±2%	1,000 psi @ 70° F	-20° to 240°	Aluminum	Fluoroelastomer Rubber	Any	0000000	000000
3/4 NPTF Female Pipe Connection
5 to 50	7 1/4"	±2%	1,000 psi @ 70° F	-20° to 240°	Aluminum	Fluoroelastomer Rubber	Any	0000000	000000
10 to 100	7 1/4"	±2%	1,000 psi @ 70° F	-20° to 240°	Aluminum	Fluoroelastomer Rubber	Any	0000000	000000
15 to 150	7 1/4"	±2%	1,000 psi @ 70° F	-20° to 240°	Aluminum	Fluoroelastomer Rubber	Any	0000000	000000
25 to 250	7 1/4"	±2%	1,000 psi @ 70° F	-20° to 240°	Aluminum	Fluoroelastomer Rubber	Any	0000000	000000
1 NPTF Female Pipe Connection
15 to 150	7 1/4"	±2%	1,000 psi @ 70° F	-20° to 240°	Aluminum	Fluoroelastomer Rubber	Any	0000000	000000
25 to 250	7 1/4"	±2%	1,000 psi @ 70° F	-20° to 240°	Aluminum	Fluoroelastomer Rubber	Any	0000000	000000
1 1/2 NPTF Female Pipe Connection
40 to 400	12 1/4"	±2%	1,000 psi @ 70° F	-20° to 240°	Aluminum	Fluoroelastomer Rubber	Any	0000000	00000000

Flowmeters with Pressure Gauge

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

High-Temperature and Pressure Flowmeters for Oil

If the oil in your line is too hot or pressurized for standard flowmeters, use these flowmeters to measure the flow rate. As oil flows through, it pushes an indicator up the scale, showing you the flow rate. The scale rotates 360°, so you can check the flow rate from any angle. These flowmeters measure flow correctly in any mounting orientation. Install them inline with your pipe system.

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

Choose a fitting material that is compatible with the oil you're running through your line.

NPTF Female Pipe Connection
Pipe Size	Flow Range, gpm	End-to-End Lg.	Accuracy	Max. Pressure	Temp. Range, °F	Body Material	Seal Material	Mounting Orientation	Features		Each
Aluminum Fittings—240° F Max. Temp.
1/4	0.02 to 0.2	4 13/16"	±7%	3,500 psi @ 70° F	-20° to 240°	Aluminum	Fluoroelastomer Rubber	Any	Rotating Scale	0000000	0000000
1/4	0.05 to 0.5	4 13/16"	±7%	3,500 psi @ 70° F	-20° to 240°	Aluminum	Fluoroelastomer Rubber	Any	Rotating Scale	0000000	000000
1/4	0.1 to 1	4 13/16"	±7%	3,500 psi @ 70° F	-20° to 240°	Aluminum	Fluoroelastomer Rubber	Any	Rotating Scale	0000000	000000
1/4	0.2 to 2	4 13/16"	±7%	3,500 psi @ 70° F	-20° to 240°	Aluminum	Fluoroelastomer Rubber	Any	Rotating Scale	0000000	000000
1/2	0.1 to 1	6 5/8"	±2%	3,500 psi @ 70° F	-20° to 240°	Aluminum	Fluoroelastomer Rubber	Any	Rotating Scale	0000000	000000
1/2	0.5 to 5	6 5/8"	±2%	3,500 psi @ 70° F	-20° to 240°	Aluminum	Fluoroelastomer Rubber	Any	Rotating Scale	0000000	000000
1/2	1 to 10	6 5/8"	±2%	3,500 psi @ 70° F	-20° to 240°	Aluminum	Fluoroelastomer Rubber	Any	Rotating Scale	0000000	000000
1/2	1 to 15	6 5/8"	±2%	3,500 psi @ 70° F	-20° to 240°	Aluminum	Fluoroelastomer Rubber	Any	Rotating Scale	0000000	000000
3/4	1 to 10	7 1/4"	±2%	3,500 psi @ 70° F	-20° to 240°	Aluminum	Fluoroelastomer Rubber	Any	Rotating Scale	0000000	000000
3/4	2 to 20	7 1/4"	±2%	3,500 psi @ 70° F	-20° to 240°	Aluminum	Fluoroelastomer Rubber	Any	Rotating Scale	0000000	000000
3/4	3 to 30	7 1/4"	±2%	3,500 psi @ 70° F	-20° to 240°	Aluminum	Fluoroelastomer Rubber	Any	Rotating Scale	0000000	000000
1	1 to 10	7 1/4"	±2%	3,500 psi @ 70° F	-20° to 240°	Aluminum	Fluoroelastomer Rubber	Any	Rotating Scale	0000000	000000
1	2 to 20	7 1/4"	±2%	3,500 psi @ 70° F	-20° to 240°	Aluminum	Fluoroelastomer Rubber	Any	Rotating Scale	0000000	000000
1	3 to 30	7 1/4"	±2%	3,500 psi @ 70° F	-20° to 240°	Aluminum	Fluoroelastomer Rubber	Any	Rotating Scale	0000000	000000
1	4 to 40	7 1/4"	±2%	3,500 psi @ 70° F	-20° to 240°	Aluminum	Fluoroelastomer Rubber	Any	Rotating Scale	0000000	000000
1 1/4	5 to 50	12 1/4"	±2%	3,500 psi @ 70° F	-20° to 240°	Aluminum	Fluoroelastomer Rubber	Any	Rotating Scale	0000000	00000000
1 1/4	10 to 100	12 1/4"	±2%	3,500 psi @ 70° F	-20° to 240°	Aluminum	Fluoroelastomer Rubber	Any	Rotating Scale	0000000	00000000
Aluminum Fittings—400° F Max. Temp.
3/4	0.5 to 5	7 1/4"	±2%	3,500 psi @ 70° F	-20° to 400°	Aluminum	Fluoroelastomer Rubber	Any	Rotating Scale	00000000	000000
3/4	1 to 10	7 1/4"	±2%	3,500 psi @ 70° F	-20° to 400°	Aluminum	Fluoroelastomer Rubber	Any	Rotating Scale	00000000	000000
1	1 to 10	7 1/4"	±2%	3,500 psi @ 70° F	-20° to 400°	Aluminum	Fluoroelastomer Rubber	Any	Rotating Scale	00000000	000000
1	3 to 30	7 1/4"	±2%	3,500 psi @ 70° F	-20° to 400°	Aluminum	Fluoroelastomer Rubber	Any	Rotating Scale	00000000	000000
1 1/2	10 to 100	12 1/4"	±2%	3,500 psi @ 70° F	-20° to 400°	Aluminum	Fluoroelastomer Rubber	Any	Rotating Scale	00000000	00000000

Any-Orientation Flowmeters for Oil

With a spring piston instead of a float, these flowmeters measure the flow rate of oil in any mounting orientation. As oil flows through, it pushes an indicator up the scale, showing you the flow rate. Install them inline with your piping system with the fittings on both ends. They’re union fittings, making it easy to position the scale so it’s visible.

Choose a fitting material that is compatible with the liquid you intend to run through your line. Polysulfone fittings work with a wide range of chemicals. However, they can crack if hit or bumped or when overtightened. Brass fittings resist impact better than polysulfone fittings.

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

Polysulfone Plastic Fittings
Flow Range, gpm	End-to-End Lg.	Accuracy	Max. Pressure	Temp. Range, °F	Body Material	Seal Material	Mounting Orientation	Features		Each
1/2 NPTF Female Pipe Connection
0.5 to 5	7 3/16"	±5%	325 psi @ 70° F	33° to 200°	Polysulfone Plastic	Fluoroelastomer Rubber	Any	Union Fittings	0000000	0000000
1 to 10	7 3/16"	±5%	325 psi @ 70° F	33° to 200°	Polysulfone Plastic	Fluoroelastomer Rubber	Any	Union Fittings	0000000	000000
3/4 NPTF Female Pipe Connection
1 to 10	7 9/16"	±5%	325 psi @ 70° F	33° to 200°	Polysulfone Plastic	Fluoroelastomer Rubber	Any	Union Fittings	0000000	000000
1 to 15	7 9/16"	±5%	325 psi @ 70° F	33° to 200°	Polysulfone Plastic	Fluoroelastomer Rubber	Any	Union Fittings	0000000	000000
1 NPTF Female Pipe Connection
1 to 15	7 9/16"	±5%	325 psi @ 70° F	33° to 200°	Polysulfone Plastic	Fluoroelastomer Rubber	Any	Union Fittings	0000000	000000
3 to 30	7 9/16"	±5%	325 psi @ 70° F	33° to 200°	Polysulfone Plastic	Fluoroelastomer Rubber	Any	Union Fittings	0000000	000000
Brass Fittings
1/2 NPTF Female Pipe Connection
0.5 to 5	7 3/16"	±5%	325 psi @ 70° F	33° to 200°	Polysulfone Plastic	Fluoroelastomer Rubber	Any	Union Fittings	0000000	000000
1 to 10	7 3/16"	±5%	325 psi @ 70° F	33° to 200°	Polysulfone Plastic	Fluoroelastomer Rubber	Any	Union Fittings	0000000	000000
3/4 NPTF Female Pipe Connection
1 to 10	7 9/16"	±5%	325 psi @ 70° F	33° to 200°	Polysulfone Plastic	Fluoroelastomer Rubber	Any	Union Fittings	0000000	000000
1 to 15	7 9/16"	±5%	325 psi @ 70° F	33° to 200°	Polysulfone Plastic	Fluoroelastomer Rubber	Any	Union Fittings	0000000	000000
1 NPTF Female Pipe Connection
1 to 15	7 9/16"	±5%	325 psi @ 70° F	33° to 200°	Polysulfone Plastic	Fluoroelastomer Rubber	Any	Union Fittings	0000000	000000
3 to 30	7 9/16"	±5%	325 psi @ 70° F	33° to 200°	Polysulfone Plastic	Fluoroelastomer Rubber	Any	Union Fittings	0000000	000000

Flow- and Pressure-Testing Flowmeters for Oil

Often used to find worn components or leaks, these flowmeters have a valve, so you can test the flow of oil from pumps and other equipment at different pressures. Keep the valve fully open to measure the maximum flow rate at zero pressure. Pressure increases as you close the valve. As oil flows through, it pushes an indicator up the scale, showing you the flow rate. The scale rotates 360°, so you can check the flow rate from any angle. These flowmeters are accurate in any mounting orientation. Mount them inline with your pipe system.

					Pressure Gauge
Flow Range, gpm	End-to-End Lg.	Accuracy	Max. Pressure	Temp. Range, °F	Range, psi	Dial Size	Body Material	Seal Material	Mounting Orientation	Features		Each
Aluminum Fittings with Aluminum Valve
1/2 NPTF Female Pipe Connection
1 to 15	10 5/16"	±2%	3,500 psi @ 70° F	-20° to 240°	0 to 3,500	2 1/2"	Aluminum	Fluoroelastomer Rubber	Any	Rotating Scale	0000000	0000000
3/4 NPTF Female Pipe Connection
2 to 20	11 5/16"	±2%	3,500 psi @ 70° F	-20° to 240°	0 to 3,500	2 1/2"	Aluminum	Fluoroelastomer Rubber	Any	Rotating Scale	0000000	000000
3 to 30	11 5/16"	±2%	3,500 psi @ 70° F	-20° to 240°	0 to 3,500	2 1/2"	Aluminum	Fluoroelastomer Rubber	Any	Rotating Scale	0000000	000000
1 1/4 NPTF Male Inlet × 1 1/4 NPTF Female Outlet Pipe Connection
10 to 100	22"	±2%	3,500 psi @ 70° F	-20° to 240°	0 to 3,500	2 1/2"	Aluminum	Fluoroelastomer Rubber	Any	Rotating Scale	0000000	00000000

Compact Flow Sights with Indicator for Water and Oil

For visual confirmation of flow from a distance, these sights have a ball indicator that moves when flow is present. They have a low-profile body for installation in pipelines with limited clearance. Backlight the back window to increase the visibility of dark liquids.

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

									Indicator
Pipe Size	Thread Type	Gender	Temp. Range, °F	Window Lg.	Hex Size	End-to-End Lg.	Max. Pressure	Direction of Flow	Material	Color		Each
Brass Body
1/8	NPTF	Female	-40° to 180°	1"	7/8"	3 1/4"	435 psi @ 150° F	Bottom to Top, Left to Right, Right to Left, Top to Bottom	Nylon Plastic	White	0000000	000000
1/4	NPTF	Female	-40° to 180°	1"	7/8"	3 1/2"	435 psi @ 150° F	Bottom to Top, Left to Right, Right to Left, Top to Bottom	Nylon Plastic	White	0000000	00000
3/8	NPTF	Female	-40° to 180°	1 1/8"	1"	4 1/4"	425 psi @ 150° F	Bottom to Top, Left to Right, Right to Left, Top to Bottom	Nylon Plastic	White	0000000	000000
1/2	NPTF	Female	-40° to 180°	1 1/4"	1 1/4"	4 5/8"	380 psi @ 150° F	Bottom to Top, Left to Right, Right to Left, Top to Bottom	Nylon Plastic	White	0000000	000000
3/4	NPTF	Female	-40° to 180°	1 3/8"	1 3/8"	5 1/4"	345 psi @ 150° F	Bottom to Top, Left to Right, Right to Left, Top to Bottom	Nylon Plastic	White	0000000	000000
1	NPTF	Female	-40° to 180°	1 1/2"	1 5/8"	6 1/4"	270 psi @ 150° F	Bottom to Top, Left to Right, Right to Left, Top to Bottom	Nylon Plastic	White	0000000	000000

Compact Flow Sights for Water and Oil

The low-profile body fits in areas with limited clearance. These sights let you visually confirm flow and inspect liquid color and clarity. The back window can be backlit to increase the visibility of dark liquids.

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

Brass Body
Pipe Size	Thread Type	Gender	Temp. Range, °F	Window Lg.	Hex Size	End-to-End Lg.	Max. Pressure	Direction of Flow		Each
1/8	NPTF	Female	-40° to 180°	1"	7/8"	3 1/4"	435 psi @ 150° F	Bottom to Top, Left to Right, Right to Left, Top to Bottom	0000000	000000
1/4	NPTF	Female	-40° to 180°	1"	7/8"	3 1/2"	435 psi @ 150° F	Bottom to Top, Left to Right, Right to Left, Top to Bottom	0000000	00000
3/8	NPTF	Female	-40° to 180°	1 1/8"	1"	4 1/4"	425 psi @ 150° F	Bottom to Top, Left to Right, Right to Left, Top to Bottom	0000000	00000
1/2	NPTF	Female	-40° to 180°	1 1/4"	1 1/4"	4 5/8"	380 psi @ 150° F	Bottom to Top, Left to Right, Right to Left, Top to Bottom	0000000	000000
3/4	NPTF	Female	-40° to 180°	1 3/8"	1 3/8"	5 1/4"	345 psi @ 150° F	Bottom to Top, Left to Right, Right to Left, Top to Bottom	0000000	000000
1	NPTF	Female	-40° to 180°	1 1/2"	1 5/8"	6 1/4"	270 psi @ 150° F	Bottom to Top, Left to Right, Right to Left, Top to Bottom	0000000	000000

Full-View Flow Sights with Indicator for Water and Oil

A ball indicator moves when flow is present so you can confirm flow at a distance. The large tubular window provides an unobstructed view for checking liquid movement, clarity, and color from multiple angles.

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

									Indicator
Pipe Size	Thread Type	Gender	Temp. Range, °F	Window Lg.	End-to-End Lg.	Ht.	Max. Pressure	Direction of Flow	Material	Color		Each
Brass Body
1/2	NPTF	Female	-40° to 212°	1 3/8"	4 1/4"	2"	130 psi @ 70° F	Bottom to Top, Left to Right, Right to Left	Nylon Plastic	White	0000000	0000000
3/4	NPTF	Female	-40° to 212°	1 3/8"	4 1/4"	2"	130 psi @ 70° F	Bottom to Top, Left to Right, Right to Left	Nylon Plastic	White	0000000	000000
1	NPTF	Female	-40° to 212°	1 3/8"	4 7/8"	2 1/4"	130 psi @ 70° F	Bottom to Top, Left to Right, Right to Left	Nylon Plastic	White	0000000	000000
1 1/4	NPTF	Female	-40° to 185°	2 1/8"	5 5/8"	3"	100 psi @ 70° F	Bottom to Top, Left to Right, Right to Left	Nylon Plastic	White	0000000	000000
1 1/2	NPTF	Female	-40° to 185°	2 1/8"	5 7/8"	3"	100 psi @ 70° F	Bottom to Top, Left to Right, Right to Left	Nylon Plastic	White	0000000	000000
2	NPTF	Female	-40° to 150°	3 3/4"	7 1/2"	4"	60 psi @ 70° F	Bottom to Top, Left to Right, Right to Left	Nylon Plastic	White	0000000	000000