Body Material Body Material |
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Set Point Set Point |
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Maximum Pressure Maximum Pressure |
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Set Point Configuration Set Point Configuration |
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Environmental Rating Environmental Rating |
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Switch Starting Position Switch Starting Position |
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Current Current |
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REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration,Evaluation, Authorization and Restriction of Chemicals) |
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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
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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 |