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.
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Easy-Read Flowmeters for Gases
Instead of a scale, these flowmeters have a large dial that makes it easy to read the flow rate of your gas from a distance. As gas flows through, it pushes a needle along the dial, showing you the flow rate.
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 bronze body should be installed away from other fittings to get the most accurate reading. To determine how far away from the fittings it should be, take your pipe's diameter and multiply it by 10. Choose a direction of flow that matches your pipe system, so you don't have to tilt your head to read the dial.
For technical drawings and 3-D models, click on a part number.
3 1/2" Dial SIze | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Flow Range, scfm | End-to-End Lg. | Overall Ht. | Accuracy | Max. Pressure | Temp. Range, °F | Seal Material | Mounting Orientation | Choose a Direction of Flow | Each | |
1/4 NPT Female | ||||||||||
| 3 to 20 | 4 9/16" | 6 11/16" | ±3% | 180 psi @ 70° F | -30° to 212° | Buna-N Rubber | Any | 00000000 | 0000000 | |
1/2 NPT Female | ||||||||||
| 5 to 40 | 4 9/16" | 6 11/16" | ±3% | 180 psi @ 70° F | -30° to 212° | Buna-N Rubber | Any | 00000000 | 000000 | |
3/4 NPT Female | ||||||||||
| 20 to 150 | 4 9/16" | 6 11/16" | ±3% | 180 psi @ 70° F | -30° to 212° | Buna-N Rubber | Any | 00000000 | 00000000 | |
1 NPT Female | ||||||||||
| 40 to 300 | 4 9/16" | 6 15/16" | ±3% | 180 psi @ 70° F | -30° to 212° | Buna-N Rubber | Any | 00000000 | 00000000 | |
1 1/2 NPT Female | ||||||||||
| 50 to 600 | 4 9/16" | 7 5/8" | ±3% | 180 psi @ 70° F | -30° to 212° | Buna-N Rubber | Any | 00000000 | 00000000 | |
2 NPT Female | ||||||||||
| 100 to 800 | 4 9/16" | 8 3/8" | ±3% | 180 psi @ 70° F | -30° to 212° | Buna-N Rubber | Any | 00000000 | 00000000 | |
| 150 to 1,000 | 4 9/16" | 8 3/8" | ±3% | 180 psi @ 70° F | -30° to 212° | Buna-N Rubber | Any | 00000000 | 00000000 | |
3 NPT Female | ||||||||||
| 300 to 2,000 | 4 9/16" | 9 13/16" | ±3% | 180 psi @ 70° F | -30° to 212° | Buna-N Rubber | Any | 00000000 | 00000000 | |
Easy-Read Flowmeters
A large dial instead of a scale makes it easier to read the flow rate from a distance. As liquid flows through these flowmeters, it pushes a needle along the dial, showing you the flow rate. They measure flow correctly no matter the mounting orientation.
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 direction of flow that matches your pipe system, so you don't have to tilt your head to read the dial.
Style B flowmeters should be installed away from other fittings to get the most accurate reading. To determine how far away from the fittings it should be, take your pipe's diameter and multiply it by 10.
Choose a fitting material that is compatible with the liquid you're running through your line. Aluminum, brass, bronze, and 316 stainless steel fittings resist impact better than PVC fittings.
| Style | Flow Range, gpm | Dial Size | End-to-End Lg. | Overall Ht. | Max. Pressure | Temp. Range, °F | Seal Material | Mounting Orientation | Choose a Direction of Flow | Each | |
Bronze Body with Bronze Fittings | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
1/2 NPT Female | |||||||||||
| B | 0.5 to 4 | 3 1/2" | 4 9/16" | 6 11/16" | 180 psi @ 70° F | 33° to 212° | Buna-N Rubber | Any | 0000000 | 0000000 | |
| B | 0.5 to 6 | 3 1/2" | 4 9/16" | 6 11/16" | 180 psi @ 70° F | 33° to 212° | Buna-N Rubber | Any | 0000000 | 000000 | |
3/4 NPT Female | |||||||||||
| B | 1.5 to 10 | 3 1/2" | 4 9/16" | 6 11/16" | 180 psi @ 70° F | 33° to 212° | Buna-N Rubber | Any | 0000000 | 000000 | |
| B | 2 to 15 | 3 1/2" | 4 9/16" | 6 11/16" | 180 psi @ 70° F | 33° to 212° | Buna-N Rubber | Any | 0000000 | 000000 | |
1 NPT Female | |||||||||||
| B | 3 to 20 | 3 1/2" | 4 9/16" | 6 15/16" | 180 psi @ 70° F | 33° to 212° | Buna-N Rubber | Any | 0000000 | 000000 | |
| B | 4 to 30 | 3 1/2" | 4 9/16" | 6 15/16" | 180 psi @ 70° F | 33° to 212° | Buna-N Rubber | Any | 0000000 | 000000 | |
1 1/2 NPT Female | |||||||||||
| B | 5 to 60 | 3 1/2" | 4 9/16" | 7 5/8" | 180 psi @ 70° F | 33° to 212° | Buna-N Rubber | Any | 0000000 | 000000 | |
| B | 15 to 100 | 3 1/2" | 4 9/16" | 7 5/8" | 180 psi @ 70° F | 33° to 212° | Buna-N Rubber | Any | 0000000 | 000000 | |
2 NPT Female | |||||||||||
| B | 15 to 100 | 3 1/2" | 4 9/16" | 8 3/8" | 180 psi @ 70° F | 33° to 212° | Buna-N Rubber | Any | 0000000 | 00000000 | |
| B | 30 to 200 | 3 1/2" | 4 9/16" | 8 3/8" | 180 psi @ 70° F | 33° to 212° | Buna-N Rubber | Any | 0000000 | 00000000 | |
3 NPT Female | |||||||||||
| B | 40 to 300 | 3 1/2" | 9 13/16" | 9 13/16" | 180 psi @ 70° F | 33° to 212° | Buna-N Rubber | Any | 0000000 | 00000000 | |