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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.
More
Flowmeters for Inert Gas
The correlated scale and conversion charts let you use the same flowmeter to measure the flow rate of nitrogen, oxygen, argon, and helium. These flowmeters have fittings on the back for installation in your instrument panel. The flow-control knob lets you open and close the valve at the inlet to adjust the flow rate within the range.
316 stainless steel fittings are more corrosion resistant than aluminum fittings.
For technical drawings and 3-D models, click on a part number.
| Pipe Connections | Overall Ht. | Ctr.-to-Ctr. Ht. | Flow Range, cc/min. | Accuracy | Max. Pressure | Max. Temp., °F | Case Material | Window Material | Seal Material | Mounting Orientation | Features | Each | |
Glass Body with 316 Stainless Steel Fittings | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Cubic Centimeters per Minute | |||||||||||||
1/8 NPT Female | 5 1/2" | 4 1/2" | 0 to 50 | ±10% | 200 psi @ 70° F | 200° | Aluminum | Polycarbonate Plastic | Fluoroelastomer Rubber | Vertical | Flow-Control Knob | 0000000 | 0000000 |
| 1/8 NPT Female | 5 1/2" | 4 1/2" | 0 to 103 | ±10% | 200 psi @ 70° F | 200° | Aluminum | Polycarbonate Plastic | Fluoroelastomer Rubber | Vertical | Flow-Control Knob | 0000000 | 000000 |
| 1/8 NPT Female | 5 1/2" | 4 1/2" | 0 to 400 | ±10% | 200 psi @ 70° F | 200° | Aluminum | Polycarbonate Plastic | Fluoroelastomer Rubber | Vertical | Flow-Control Knob | 0000000 | 000000 |
| 1/8 NPT Female | 5 1/2" | 4 1/2" | 0 to 900 | ±10% | 200 psi @ 70° F | 200° | Aluminum | Polycarbonate Plastic | Fluoroelastomer Rubber | Vertical | Flow-Control Knob, Water Flow Scale (0-18.2 ccm) | 0000000 | 000000 |
| 1/8 NPT Female | 5 1/2" | 4 1/2" | 0 to 2,580 | ±10% | 200 psi @ 70° F | 200° | Aluminum | Polycarbonate Plastic | Fluoroelastomer Rubber | Vertical | Flow-Control Knob, Water Flow Scale (0-55 ccm) | 0000000 | 000000 |
| 1/8 NPT Female | 5 1/2" | 4 1/2" | 0 to 3,840 | ±10% | 200 psi @ 70° F | 200° | Aluminum | Polycarbonate Plastic | Fluoroelastomer Rubber | Vertical | Flow-Control Knob, Water Flow Scale (0-90 ccm) | 0000000 | 000000 |
| 1/8 NPT Female | 5 1/2" | 4 1/2" | 0 to 6,000 | ±10% | 200 psi @ 70° F | 200° | Aluminum | Polycarbonate Plastic | Fluoroelastomer Rubber | Vertical | Flow-Control Knob, Water Flow Scale (0-130 ccm) | 0000000 | 000000 |
| 1/8 NPT Female | 5 1/2" | 4 1/2" | 0 to 10,100 | ±10% | 200 psi @ 70° F | 200° | Aluminum | Polycarbonate Plastic | Fluoroelastomer Rubber | Vertical | Flow-Control Knob, Water Flow Scale (0-235 ccm) | 0000000 | 000000 |
| 1/8 NPT Female | 5 1/2" | 4 1/2" | 0 to 15,750 | ±10% | 200 psi @ 70° F | 200° | Aluminum | Polycarbonate Plastic | Fluoroelastomer Rubber | Vertical | Flow-Control Knob, Water Flow Scale (0-375 ccm) | 0000000 | 000000 |
| 1/8 NPT Female | 5 1/2" | 4 1/2" | 0 to 23,640 | ±10% | 200 psi @ 70° F | 200° | Aluminum | Polycarbonate Plastic | Fluoroelastomer Rubber | Vertical | Flow-Control Knob, Water Flow Scale (0-570 ccm) | 0000000 | 000000 |
| 1/8 NPT Female | 10" | 8 7/8" | 0 to 50 | ±5% | 200 psi @ 70° F | 200° | Aluminum | Polycarbonate Plastic | Fluoroelastomer Rubber | Vertical | Flow-Control Knob | 0000000 | 000000 |
| 1/8 NPT Female | 10" | 8 7/8" | 0 to 103 | ±5% | 200 psi @ 70° F | 200° | Aluminum | Polycarbonate Plastic | Fluoroelastomer Rubber | Vertical | Flow-Control Knob | 00000000 | 000000 |
| 1/8 NPT Female | 10" | 8 7/8" | 0 to 400 | ±5% | 200 psi @ 70° F | 200° | Aluminum | Polycarbonate Plastic | Fluoroelastomer Rubber | Vertical | Flow-Control Knob | 00000000 | 000000 |
| 1/8 NPT Female | 10" | 8 7/8" | 0 to 855 | ±5% | 200 psi @ 70° F | 200° | Aluminum | Polycarbonate Plastic | Fluoroelastomer Rubber | Vertical | Flow-Control Knob, Water Flow Scale (0-18 ccm) | 0000000 | 000000 |
| 1/8 NPT Female | 10" | 8 7/8" | 0 to 2,290 | ±5% | 200 psi @ 70° F | 200° | Aluminum | Polycarbonate Plastic | Fluoroelastomer Rubber | Vertical | Flow-Control Knob, Water Flow Scale (0-50 ccm) | 0000000 | 000000 |
| 1/8 NPT Female | 10" | 8 7/8" | 0 to 3,425 | ±5% | 200 psi @ 70° F | 200° | Aluminum | Polycarbonate Plastic | Fluoroelastomer Rubber | Vertical | Flow-Control Knob, Water Flow Scale (0-75 ccm) | 0000000 | 000000 |
| 1/8 NPT Female | 10" | 8 7/8" | 0 to 9,180 | ±5% | 200 psi @ 70° F | 200° | Aluminum | Polycarbonate Plastic | Fluoroelastomer Rubber | Vertical | Flow-Control Knob, Water Flow Scale (0-215 ccm) | 0000000 | 000000 |
| 1/8 NPT Female | 10" | 8 7/8" | 0 to 23,740 | ±5% | 200 psi @ 70° F | 200° | Aluminum | Polycarbonate Plastic | Fluoroelastomer Rubber | Vertical | Flow-Control Knob, Water Flow Scale (0-565 ccm) | 0000000 | 000000 |
Glass Body with Aluminum Fittings | |||||||||||||
Cubic Centimeters per Minute | |||||||||||||
| 1/8 NPT Female | 5 1/2" | 4 1/2" | 0 to 50 | ±10% | 200 psi @ 70° F | 200° | Aluminum | Polycarbonate Plastic | Buna-N Rubber | Vertical | Flow-Control Knob | 0000000 | 000000 |
| 1/8 NPT Female | 5 1/2" | 4 1/2" | 0 to 103 | ±10% | 200 psi @ 70° F | 200° | Aluminum | Polycarbonate Plastic | Buna-N Rubber | Vertical | Flow-Control Knob | 0000000 | 000000 |
| 1/8 NPT Female | 5 1/2" | 4 1/2" | 0 to 400 | ±10% | 200 psi @ 70° F | 200° | Aluminum | Polycarbonate Plastic | Buna-N Rubber | Vertical | Flow-Control Knob | 0000000 | 000000 |
| 1/8 NPT Female | 5 1/2" | 4 1/2" | 0 to 900 | ±10% | 200 psi @ 70° F | 200° | Aluminum | Polycarbonate Plastic | Buna-N Rubber | Vertical | Flow-Control Knob, Water Flow Scale (0-18.2 ccm) | 0000000 | 000000 |
| 1/8 NPT Female | 5 1/2" | 4 1/2" | 0 to 2,580 | ±10% | 200 psi @ 70° F | 200° | Aluminum | Polycarbonate Plastic | Buna-N Rubber | Vertical | Flow-Control Knob, Water Flow Scale (0-55 ccm) | 0000000 | 000000 |
| 1/8 NPT Female | 5 1/2" | 4 1/2" | 0 to 3,840 | ±10% | 200 psi @ 70° F | 200° | Aluminum | Polycarbonate Plastic | Buna-N Rubber | Vertical | Flow-Control Knob, Water Flow Scale (0-90 ccm) | 0000000 | 000000 |
| 1/8 NPT Female | 5 1/2" | 4 1/2" | 0 to 6,000 | ±10% | 200 psi @ 70° F | 200° | Aluminum | Polycarbonate Plastic | Buna-N Rubber | Vertical | Flow-Control Knob, Water Flow Scale (0-130 ccm) | 0000000 | 000000 |
| 1/8 NPT Female | 5 1/2" | 4 1/2" | 0 to 10,100 | ±10% | 200 psi @ 70° F | 200° | Aluminum | Polycarbonate Plastic | Buna-N Rubber | Vertical | Flow-Control Knob, Water Flow Scale (0-235 ccm) | 0000000 | 000000 |
| 1/8 NPT Female | 5 1/2" | 4 1/2" | 0 to 15,750 | ±10% | 200 psi @ 70° F | 200° | Aluminum | Polycarbonate Plastic | Buna-N Rubber | Vertical | Flow-Control Knob, Water Flow Scale (0-375 ccm) | 0000000 | 000000 |
| 1/8 NPT Female | 5 1/2" | 4 1/2" | 0 to 23,640 | ±10% | 200 psi @ 70° F | 200° | Aluminum | Polycarbonate Plastic | Buna-N Rubber | Vertical | Flow-Control Knob, Water Flow Scale (0-570 ccm) | 0000000 | 000000 |
| 1/8 NPT Female | 10" | 8 7/8" | 0 to 50 | ±5% | 200 psi @ 70° F | 200° | Aluminum | Polycarbonate Plastic | Buna-N Rubber | Vertical | Flow-Control Knob | 0000000 | 000000 |
| 1/8 NPT Female | 10" | 8 7/8" | 0 to 103 | ±5% | 200 psi @ 70° F | 200° | Aluminum | Polycarbonate Plastic | Buna-N Rubber | Vertical | Flow-Control Knob | 00000000 | 000000 |
| 1/8 NPT Female | 10" | 8 7/8" | 0 to 400 | ±5% | 200 psi @ 70° F | 200° | Aluminum | Polycarbonate Plastic | Buna-N Rubber | Vertical | Flow-Control Knob | 00000000 | 000000 |
| 1/8 NPT Female | 10" | 8 7/8" | 0 to 855 | ±5% | 200 psi @ 70° F | 200° | Aluminum | Polycarbonate Plastic | Buna-N Rubber | Vertical | Flow-Control Knob, Water Flow Scale (0-18 ccm) | 0000000 | 000000 |
| 1/8 NPT Female | 10" | 8 7/8" | 0 to 2,290 | ±5% | 200 psi @ 70° F | 200° | Aluminum | Polycarbonate Plastic | Buna-N Rubber | Vertical | Flow-Control Knob, Water Flow Scale (0-50 ccm) | 0000000 | 000000 |
| 1/8 NPT Female | 10" | 8 7/8" | 0 to 3,425 | ±5% | 200 psi @ 70° F | 200° | Aluminum | Polycarbonate Plastic | Buna-N Rubber | Vertical | Flow-Control Knob, Water Flow Scale (0-75 ccm) | 0000000 | 000000 |
| 1/8 NPT Female | 10" | 8 7/8" | 0 to 9,180 | ±5% | 200 psi @ 70° F | 200° | Aluminum | Polycarbonate Plastic | Buna-N Rubber | Vertical | Flow-Control Knob, Water Flow Scale (0-215 ccm) | 0000000 | 000000 |
| 1/8 NPT Female | 10" | 8 7/8" | 0 to 23,740 | ±5% | 200 psi @ 70° F | 200° | Aluminum | Polycarbonate Plastic | Buna-N Rubber | Vertical | Flow-Control Knob, Water Flow Scale (0-565 ccm) | 0000000 | 000000 |
Flow Sights with Barbed Fittings for Water, Oil, Air, and Inert Gas
Monitor liquid movement, color, and clarity in tube systems—this sight has barbed fittings that slide into soft plastic and rubber tubing. It has a clear body and a ball 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 | Direction of Flow | Material | Color | Each | |
Polycarbonate Plastic 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 Plastic | White | 0000000 | 000000 |
Panel-Mount Flow Sights for Water, Oil, and Inert Gas
The included mounting ring lets you install these sights in instrument panels. They have three ball indicators that bounce in the domed-top window to show flow in your line.
Flow Sights | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Indicator | Repair Kits | ||||||||||||||
| Pipe Size | Thread Type | Gender | Temp. Range, °F | Window Dia. | End-to-End Lg. | Ht. | Max. Pressure | Panel Cutout Dia. | Direction of Flow | No. of | Material | Each | Each | ||
Brass Body | |||||||||||||||
| 1/4 | NPT | Female | 35° to 120° | 1 5/8" | 3 1/8" | 2 1/8" | 150 psi @ 70° F | 2 3/8" | Bottom to Top, Left to Right, Right to Left, Top to Bottom | 3 | White Polyethylene Plastic White Polyethylene Plastic Green Acrylic Plastic | 0000000 | 000000 | 00000000 | 000000 |
| 3/8 | NPT | Female | 35° to 120° | 1 5/8" | 3 1/8" | 2 1/8" | 150 psi @ 70° F | 2 3/8" | Bottom to Top, Left to Right, Right to Left, Top to Bottom | 3 | White Polyethylene Plastic White Polyethylene Plastic Green Acrylic Plastic | 0000000 | 00000 | 00000000 | 00000 |
| 1/2 | NPT | Female | 35° to 120° | 1 5/8" | 3 1/8" | 2 1/8" | 150 psi @ 70° F | 2 3/8" | Bottom to Top, Left to Right, Right to Left, Top to Bottom | 3 | White Polyethylene Plastic White Polyethylene Plastic Green Acrylic Plastic | 0000000 | 000000 | 00000000 | 00000 |
| 3/4 | NPT | Female | 35° to 120° | 1 5/8" | 3 1/8" | 2 1/8" | 150 psi @ 70° F | 2 3/8" | Bottom to Top, Left to Right, Right to Left, Top to Bottom | 3 | White Polyethylene Plastic White Polyethylene Plastic Green Acrylic Plastic | 0000000 | 000000 | 00000000 | 00000 |
| 1 | NPT | Female | 35° to 120° | 1 5/8" | 3 1/8" | 2 5/8" | 150 psi @ 70° F | 2 3/8" | Bottom to Top, Left to Right, Right to Left, Top to Bottom | 3 | White Polyethylene Plastic White Polyethylene Plastic Green Acrylic Plastic | 0000000 | 000000 | 00000000 | 00000 |
Hazardous Location Flow Switches for Water, Air, and Inert Gas
These switches are UL listed for environments with flammable gases and combustible dust. They activate or deactivate equipment when the flow rate reaches your set point. All are single pole, double throw (SPDT) and can be installed to turn one circuit from “off” to “on” (normally open) or from “on” to “off” (normally closed).
Switches with a brass body meet NEC Class I, Divisions 1 and 2, Groups B, C, and D; and NEC Class II, Divisions 1 and 2, Groups E, F, and G.
Switches with a 304 stainless steel body are more corrosion resistant than switches with a brass body and meet NEC Class I, Divisions 1 and 2, Groups A, B, C, and D; and NEC Class II, Divisions 1 and 2, Groups E, F, and G.
For technical drawings and 3-D models, click on a part number.
Set Point | Conduit | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Pipe Size | Thread Type | Gender | For Water, gpm | For Air and Inert Gas, scfm | Max. Pressure | Temp. Range, °F | Voltage | Current | Trade Size | Thread Type | Gender | End-to-End Lg. | Each | |
Brass Body | ||||||||||||||
| 1/2 | NPT | Female | 1.5 | 6.5 | 250 psi @ 70° F | -4° to 220° | 120V AC/ 240V AC | 5 A @ 120 V AC | 3/4 | NPT | Male | 2 1/4" | 00000000 | 0000000 |
| 3/4 | NPT | Female | 2 | 10 | 250 psi @ 70° F | -4° to 220° | 120V AC/ 240V AC | 5 A @ 120 V AC | 3/4 | NPT | Male | 2 3/8" | 00000000 | 000000 |
| 1 | NPT | Female | 3 | 14 | 250 psi @ 70° F | -4° to 220° | 120V AC/ 240V AC | 5 A @ 120 V AC | 3/4 | NPT | Male | 2 1/2" | 00000000 | 000000 |
| 1 1/4 | NPT | Female | 4 | 21 | 250 psi @ 70° F | -4° to 220° | 120V AC/ 240V AC | 5 A @ 120 V AC | 3/4 | NPT | Male | 2 5/8" | 00000000 | 000000 |
| 1 1/2 | NPT | Female | 6 | 33 | 250 psi @ 70° F | -4° to 220° | 120V AC/ 240V AC | 5 A @ 120 V AC | 3/4 | NPT | Male | 2 7/8" | 00000000 | 000000 |
| 2 | NPT | Female | 10 | 43 | 250 psi @ 70° F | -4° to 220° | 120V AC/ 240V AC | 5 A @ 120 V AC | 3/4 | NPT | Male | 3" | 00000000 | 000000 |
304 Stainless Steel Body | ||||||||||||||
| 1/2 | NPT | Female | 1.5 | 6.5 | 2000 psi @ 70° F | -4° to 220° | 120V AC/ 240V AC | 5 A @ 120 V AC | 3/4 | NPT | Male | 2 1/4" | 00000000 | 000000 |
| 3/4 | NPT | Female | 2 | 10 | 2000 psi @ 70° F | -4° to 220° | 120V AC/ 240V AC | 5 A @ 120 V AC | 3/4 | NPT | Male | 2 5/8" | 00000000 | 000000 |
| 1 | NPT | Female | 3 | 14 | 2000 psi @ 70° F | -4° to 220° | 120V AC/ 240V AC | 5 A @ 120 V AC | 3/4 | NPT | Male | 3" | 00000000 | 000000 |
| 2 | NPT | Female | 10 | 43 | 2000 psi @ 70° F | -4° to 220° | 120V AC/ 240V AC | 5 A @ 120 V AC | 3/4 | NPT | Male | 4 3/4" | 00000000 | 000000 |
Adjustable Hazardous Location Flow Switches for Water, Air, and Inert Gas
For applications with a variable flow rate in environments with flammable gases and combustible dust, these UL-listed switches have an adjustment screw to alter the set point. They activate or deactivate equipment when the flow rate reaches your set point. All are single pole, double throw (SPDT) and can be installed to turn one circuit from “off” to “on” (normally open) or from “on” to “off” (normally closed).
Switch with a brass body meets NEC Class I, Divisions 1 and 2, Groups B, C, and D; and NEC Class II, Divisions 1 and 2, Groups E, F, and G.
Switch with a 304 stainless steel body is more corrosion resistant than the switch with a brass body. It meets NEC Class I, Divisions 1 and 2, Groups A, B, C, and D; and NEC Class II, Divisions 1 and 2, Groups E, F, and G.
For technical drawings and 3-D models, click on a part number.
Set Point | Conduit | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Pipe Size | Thread Type | Gender | For Water, gpm | For Air and Inert Gas, scfm | Max. Pressure | Temp. Range, °F | Voltage | Current | Trade Size | Thread Type | Gender | End-to-End Lg. | Each | |
Brass Body | ||||||||||||||
| 1/2 | NPT | Female | 0.04 to 0.75 | 0.18 to 2.7 | 1450 psi @ 70° F | -4° to 220° | 120V AC/ 240V AC | 5 A @ 120 V AC | 3/4 | NPT | Male | 3 5/8" | 00000000 | 0000000 |
304 Stainless Steel Body | ||||||||||||||
| 1/2 | NPT | Female | 0.04 to 0.75 | 0.18 to 2.7 | 1450 psi @ 70° F | -4° to 220° | 120V AC/ 240V AC | 5 A @ 120 V AC | 3/4 | NPT | Male | 3 5/8" | 00000000 | 000000 |
Hazardous Location Insertion Flow Switches for Water, Oil, Air, and Inert Gas
For installation in environments with flammable gases and combustible dust, these flow switches are UL listed for hazardous locations. They meet NEC Class I, Divisions 1 and 2, Groups C and D; and NEC Class II, Divisions 1 and 2, Groups E, F, and G. They’re installed in tees or pipe outlets to detect the flow rate of liquid in contact with the sensing paddle. Switches activate or deactivate equipment when the flow rate reaches your set point. All come with five sensing paddles that can be trimmed to fit a range of pipe sizes. The flow rate varies based on the pipe size and paddle used.
SPDT switches control one circuit. They can be installed to turn the circuit from “off” to “on” (normally open) or from “on” to “off” (normally closed).
DPDT switches control two circuits. They can be installed to turn both circuits from “off” to “on” (normally open) or from “on” to “off” (normally closed).
Switches with a 316 stainless steel body are more corrosion resistant than switches with a brass body.
For technical drawings and 3-D models, click on a part number.
Set Point | Conduit | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Pipe Size | Thread Type | Gender | For Pipe Size | For Water and Oil, gpm | For Air and Inert Gas, scfm | Max. Pressure | Temp. Range, °F | Voltage | Current | Trade Size | Thread Type | Gender | Body Ht. | Each | |
SPDT | |||||||||||||||
Brass Body | |||||||||||||||
| 1 1/2 | NPT | Male | 1 1/2 to 20 | 3 to 2,400 | 17 to 10,000 | 1000 psi @ 70° F | -4° to 275° | 120V AC 240V AC | 10 A @ 120 V AC | 3/4 | NPT | Female | 8" | 00000000 | 0000000 |
316 Stainless Steel Body | |||||||||||||||
| 1 1/2 | NPT | Male | 1 1/2 to 20 | 3 to 2,400 | 17 to 10,000 | 2000 psi @ 70° F | -4° to 275° | 120V AC 240V AC | 10 A @ 120 V AC | 3/4 | NPT | Female | 8" | 00000000 | 000000 |
DPDT | |||||||||||||||
Brass Body | |||||||||||||||
| 1 1/2 | NPT | Male | 1 1/2 to 20 | 3 to 2,400 | 17 to 10,000 | 1000 psi @ 70° F | -4° to 275° | 120V AC 240V AC | 10 A @ 120 V AC | 3/4 | NPT | Female | 8" | 00000000 | 000000 |
316 Stainless Steel Body | |||||||||||||||
| 1 1/2 | NPT | Male | 1 1/2 to 20 | 3 to 2,400 | 17 to 10,000 | 2000 psi @ 70° F | -4° to 275° | 120V AC 240V AC | 10 A @ 120 V AC | 3/4 | NPT | Female | 8" | 00000000 | 000000 |