Filter by
Pipe Size
Body Material
For Use With
Calibrated With
Wetted Parts Material
Approximate Difference Between Set Point and Reset Point
Fitting Material
Mounting Location
Switch Designation
Gender
Maximum Pressure @ Temperature
Certification
Mounting Position
Set Point Configuration
Adjustability
Fitting Finished Material
U.S.–Mexico–Canada Agreement (USMCA) Qualifying
DFARS Specialty Metals
Export Control Classification Number (ECCN)
REACH
RoHS
Thread Type
Fixed-Set-Point Flow Switches
 |  |
Style A | Style D |
Since they come factory set to a specific set point, these switches are easier to install than adjustable flow switches. As flowing liquid pushes an internal piston, the switch reads the position of the piston to measure the flow. When the piston passes the set point, the switch actuates. They’re accurate in any mounting position.
These switches are calibrated with and measure water accurately. They can also be used with other liquids by applying your liquid’s specific-gravity conversion factor to calculate the new set point.
Choose a fitting material that is compatible with the liquid you intend to run through your line.
Straight
|
Style A |
Polypropylene Fitting—Polypropylene and PPS fittings work with a wide range of chemicals. However, they can crack from impact or when overtightened.
SPST—SPST (single pole, single throw) switches turn one device from off to on (normally open).
Style | Pipe Size | Thread Type | Gender | Set Point, gpm | Approx. Difference Between Set Point and Reset Point, gpm | Max. Pressure @ Temp. | Temp. Range, ° F | Max. Switching Current @ Voltage | End-to-End Lg. | Mounting Position | Each | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Polypropylene Body with Polypropylene Fittings | ||||||||||||||
SPST | ||||||||||||||
| A | 1/4 | NPT | Female | 0.1 | 0.1 | 200 psi @ 70° F | 33 to 194 | 500 mA @ 300V AC 700 mA @ 350V DC | 4 7/8" | Any Angle | 2371K41 | 000000 | ||
| A | 1/4 | NPT | Female | 0.25 | 0.25 | 200 psi @ 70° F | 33 to 194 | 500 mA @ 300V AC 700 mA @ 350V DC | 4 7/8" | Any Angle | 2371K42 | 00000 | ||
| A | 1/4 | NPT | Female | 0.5 | 0.5 | 200 psi @ 70° F | 33 to 194 | 500 mA @ 300V AC 700 mA @ 350V DC | 4 7/8" | Any Angle | 2371K43 | 00000 | ||
| A | 1/4 | NPT | Female | 0.75 | 0.75 | 200 psi @ 70° F | 33 to 194 | 500 mA @ 300V AC 700 mA @ 350V DC | 4 7/8" | Any Angle | 2371K44 | 00000 | ||
| A | 1/4 | NPT | Female | 1 | 1 | 200 psi @ 70° F | 33 to 194 | 500 mA @ 300V AC 700 mA @ 350V DC | 4 7/8" | Any Angle | 2371K45 | 00000 | ||
90° Elbow
|
Style D |
Polypropylene Fitting—Polypropylene and PPS fittings work with a wide range of chemicals. However, they can crack from impact or when overtightened.
SPST—SPST (single pole, single throw) switches turn one device from off to on (normally open).
Style | Pipe Size | Thread Type | Gender | Set Point, gpm | Approx. Difference Between Set Point and Reset Point, gpm | Max. Pressure @ Temp. | Temp. Range, ° F | Max. Switching Current @ Voltage | Mounting Position | Each | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Polypropylene Body with Polypropylene Fittings | |||||||||||||
SPST | |||||||||||||
| D | 1/4 | NPT | Female | 0.042 | 0.006 | 200 psi @ 70° F | 33 to 194 | 500 mA @ 300V AC 700 mA @ 350V DC | Any Angle | 4553N15 | 000000 | ||
| D | 1/4 | NPT | Female | 0.1 | 0.1 | 200 psi @ 70° F | 33 to 194 | 500 mA @ 300V AC 700 mA @ 350V DC | Any Angle | 2371K21 | 00000 | ||
| D | 1/4 | NPT | Female | 0.25 | 0.25 | 200 psi @ 70° F | 33 to 194 | 500 mA @ 300V AC 700 mA @ 350V DC | Any Angle | 2371K22 | 00000 | ||
| D | 1/4 | NPT | Female | 0.5 | 0.5 | 200 psi @ 70° F | 33 to 194 | 500 mA @ 300V AC 700 mA @ 350V DC | Any Angle | 2371K23 | 00000 | ||
| D | 1/4 | NPT | Female | 0.75 | 0.75 | 200 psi @ 70° F | 33 to 194 | 500 mA @ 300V AC 700 mA @ 350V DC | Any Angle | 2371K24 | 00000 | ||
| D | 1/4 | NPT | Female | 1 | 1 | 200 psi @ 70° F | 33 to 194 | 500 mA @ 300V AC 700 mA @ 350V DC | Any Angle | 2371K25 | 00000 | ||
