Piston Type Flow Switches of 2025
Best Choice1
Gems SensorsGems Sensors FS-926 Series Brass Flow Switch, Elbow, Piston Type, 0.055 (200 cc/min) gpm Flow Setting, 1/4" NPT Female
Main highlights- Wetted Materials: Brass, 316 Stainless Steel, Viton, Epoxy
- Switch Type: SPDT (20VA)
- Set Point Differential (Maximum): 0.15
- Recommended Filtration: 50 micron
- Electrical Termination: 18 AWG, 24"-26" long Polymeric Leads
9.7Exceptional
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Value for Money2
Best Price SquareGems Sensors FS-927 Series Brass Compact Flow Switch, Elbow, Piston Type, Normally Open, 1 gpm Flow Setting, 1/4" NPT Female
Main highlights- Wetted Materials: Brass, 316 Stainless Steel
- Switch Type: SPST, N.O. (20VA)
- Set Point Differential (Maximum): 0.2
- Recommended Filtration: 50 micron
- Electrical Termination: 18 AWG, 24"-26" long PVC Leads
9.6Exceptional
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3
Gems SensorsGems Sensors FS-927 Series Brass Compact Flow Switch, Elbow, Piston Type, Normally Open, 0.1 gpm Flow Setting, 1/4" NPT Female
Main highlights- Wetted Materials: Brass, 316 Stainless Steel
- Switch Type: SPST, N.O. (20VA)
- Set Point Differential (Maximum): 0.2
- Recommended Filtration: 50 micron
- Electrical Termination: 18 AWG, 24"-26" long PVC Leads
9.4Excellent
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4
Gems SensorsGems Sensors FS-380P Series Polypropylene Flow Switch, Inline, Piston Type, 0.25 gpm Flow Setting, 1/4" Quick Disconnect Male
Main highlights- Wetted Materials: Polypropylene, PPS Composite, 316 Stainless Steel, Fluorocarbon
- Switch Type: SPST, N.O. (10VA)
- Set Point Differential (Maximum): 0.2
- Recommended Filtration: 100 micron
- Electrical Termination: 22 AWG, 24"-26" long Polymeric Leads
9.2Excellent
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5
Gems SensorsGems Sensors 3/8 MNPT Piston Liquid Flow Switch, 0.15 gpm - FS-380P 209876
Main highlights- Type:-Piston
- Min. Ambient Temp. (F):-0
- Item:-Liquid Flow Switch
- Flow Rate:-0.15 gpm
- Connection Size (In.):-3/8 MNPT
9.0Excellent
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6
Mcdonnell & MillerMcDonnell & Miller FS4-3 General Purpose Liquid Flow Switch
Main highlights- Sensitivity adjusting screw makes flow adjustment easy
- Minimum/maximum temperature: 32 degrees F/300 degrees F
- Four stainless steel paddles included: 1", 2", 3" & 6" (25, 50, 80, & 150mm)
- For starting or stopping electrically operated equipment such as signal lights, alarms, motors, automatic burners, metering devices and others
- 1" NPT
8.7Very Good
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7
Gems SensorsGems Sensors FS-927 Series Brass Compact Flow Switch, Elbow, Piston Type, Normally Closed, 1 gpm Flow Setting, 1/4" NPT Female
Main highlights- Wetted Materials: Brass, 316 Stainless Steel
- Switch Type: SPST, N.C. (20VA)
- Set Point Differential (Maximum): 0.2
- Recommended Filtration: 50 micron
- Electrical Termination: 18 AWG, 24"-26" long PVC Leads
8.5Good
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8
Best Price SquareGems Sensors - 70822 FS-927 Series Brass Compact Flow Switch, Elbow, Piston Type, Normally Open, 0.5 gpm Flow Setting, 1/4" NPT Female
Main highlights- Wetted Materials: Brass, 316 Stainless Steel
- Switch Type: SPST, N.O. (20VA)
- Set Point Differential (Maximum): 0.2
- Recommended Filtration: 50 micron
- Electrical Termination: 18 AWG, 24"-26" long PVC Leads
8.2Good
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9
Gems SensorsGems Sensors FS-4 Series Ryton Flow Switch, Elbow, Piston Type, SPST Switch, Normally Open, 1.5 gpm Flow Setting, 9/16"-18 UNF-2B
Main highlights- Wetted Materials: Ryton, 316 Stainless Steel, Viton, Epoxy
- Switch Type: SPST, N.O. (20VA)
- Set Point Differential (Maximum): 0.2
- Recommended Filtration: 50 micron
- Electrical Termination: 18 AWG, Zipcord, 24" long
8.1Good
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10
Gems SensorsLiquid Flow Switch, Piston, SPST, 10VA
Main highlights- High-pressure-rated compact flow switches are commonly used in hydraulic systems
8.0Good
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