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Flow Switches

129 Results Found that Include 129 Products

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Results per page: 16 | 32 | 48
General Purpose Flow Switch,NEMA1
  • MCDONNELL & MILLER
  • General Purpose Flow Switch, NEMA1General Purpose Flow Switch,NEMA1
  • Item # 2RUL3
  • Mfr. Model # FS251
  • General Purpose Switch, Min. Flow Rate 5.8 GPM, Max. Flow GPM 131, Connection Size (In.) 1 NPT, Switch...More

General Purpose Flow Switch,NEMA4
  • MCDONNELL & MILLER
  • General Purpose Flow Switch, NEMA4General Purpose Flow Switch,NEMA4
  • Item # 2RUL4
  • Mfr. Model # FS254
  • General Purpose Switch, Min. Flow Rate 5.8 GPM, Max. Flow GPM 131, Connection Size (In.) 1 NPT, Switch...More

Switch,Liquid Flow
  • MCDONNELL & MILLER
  • Switch, Liquid FlowSwitch,Liquid Flow
  • Item # 4RC67
  • Mfr. Model # FS5-3/4
  • General Purpose Switch, Min. Flow Rate 1.5 GPM, Max. Flow GPM 15, Connection Size (In.) 3/4 FNPT, Switch...More

Flow Switch,1 In MNPT
  • JOHNSON CONTROLS
  • Flow Switch, 1 In MNPTFlow Switch,1 In MNPT
  • Item # 40G308
  • Mfr. Model # F61KB-11C
  • Liquid Flow Switch, General Purpose Switch, Max. HP 1, 1 Phase, 60 Hz, Min. Flow Rate (GPM) 2.5, Max. Flow...More

Flow Switch,1 In MNPT
  • JOHNSON CONTROLS
  • Flow Switch, 1 In MNPTFlow Switch,1 In MNPT
  • Item # 40G311
  • Mfr. Model # F61MB-1C
  • Liquid Flow Switch, General Purpose Switch, Max. HP 1, 1 Phase, 60 Hz, Min. Flow Rate (GPM) 2.5, Max. Flow...More

Flow Switch,1 In MNPT
  • JOHNSON CONTROLS
  • Flow Switch, 1 In MNPTFlow Switch,1 In MNPT
  • Item # 40G312
  • Mfr. Model # F61MG-1C
  • Liquid Flow Switch, General Purpose Switch, Max. HP 1, 1 Phase, 60 Hz, Min. Flow Rate (GPM) 2.5, Max. Flow...More

Liquid Flow Switch,Piston,SPST,20VA
  • GEMS SENSORS
  • Liquid Flow Switch, Piston, SPST, 20VALiquid Flow Switch,Piston,SPST,20VA
  • Item # 1ALV8
  • Mfr. Model # FS-380 168432
  • Liquid Flow Switch, Piston, Flow Rate 0.25 GPM, Connection Size (In.) 3/8 MNPT, Min. Ambient Temp. -20 F,...More

Switch,Air Flow
  • MCDONNELL & MILLER
  • Switch, Air FlowSwitch,Air Flow
  • Item # 4RC76
  • Mfr. Model # AF-1
  • Switch Enclosure NEMA1, Min. Ambient Temp. 32 F, Max. Ambient Temp. 300 F, Operating Velocity Range 910 to...More

Liquid Flow Switch,Shuttle,SPDT,20VA
  • GEMS SENSORS
  • Liquid Flow Switch, Shuttle, SPDT, 20VALiquid Flow Switch,Shuttle,SPDT,20VA
  • Item # 1ALD7
  • Mfr. Model # FS-200 26838
  • Liquid Flow Switch, Shuttle, Flow Rate 2.0 to 8.0 GPM, Connection Size (In.) 1 FNPT, Min. Ambient Temp. -20...More

Liquid Flow Switch,Paddle,SPDT,20VA
  • GEMS SENSORS
  • Liquid Flow Switch, Paddle, SPDT, 20VALiquid Flow Switch,Paddle,SPDT,20VA
  • Item # 1AKZ6
  • Mfr. Model # FS-550 29608
  • Liquid Flow Switch, Paddle, Flow Rate 15-48 GPM, Connection Size (In.) 1 MNPT, Min. Ambient Temp. -30 F, Max....More

Flow Switch, 3.5 to 600 fpm,SPDT
  • TACO
  • Flow Switch, 3.5 to 600 fpm, SPDTFlow Switch, 3.5 to 600 fpm,SPDT
  • Item # 29YM34
  • Mfr. Model # IFSWSBF-1
  • Flow Switch, Industrial, Max. HP 1/3 HP, 1 Phase, 60 Hz, Min. Flow Rate (GPM) 4.5, Max. Flow GPM 1500, Flow...More

Flow Switch, 3.5 to 600 fpm,SPDT
  • TACO
  • Flow Switch, 3.5 to 600 fpm, SPDTFlow Switch, 3.5 to 600 fpm,SPDT
  • Item # 29YM36
  • Mfr. Model # IFS01BR-1
  • Flow Switch, Industrial, Max. HP 120VAC, 1/8 HP, 240VAC, 1/4 HP, 1 Phase, 60 Hz, Min. Flow Rate (GPM) 4.5,...More

Switch,Liquid Flow
  • MCDONNELL & MILLER
  • Switch, Liquid FlowSwitch,Liquid Flow
  • Item # 4RC70
  • Mfr. Model # FS7-4
  • Industrial/Heavy-duty Liquid Flow Switch, Min. Flow Rate 4.8 GPM, Max. Flow GPM 7.7, Connection Size (In.) 1...More

Switch,Liquid Flow
  • MCDONNELL & MILLER
  • Switch, Liquid FlowSwitch,Liquid Flow
  • Item # 4RC68
  • Mfr. Model # FS6-1
  • 7.4 Amps, High Sensitivity Switch, Min. Flow Rate 0.12 GPM, Max. Flow GPM 2.5, Connection Size (In.) 1 NPT,...More

Flow Switch,Max GPM 9
  • JOHNSON CONTROLS
  • Flow Switch, Max GPM 9Flow Switch,Max GPM 9
  • Item # 40G310
  • Mfr. Model # F61KD-4C
  • Liquid Flow Switch, General Purpose Switch, Max. HP 1, 1 Phase, 60 Hz, Min. Flow Rate (GPM) 0.3, Max. Flow...More

Switch,Flow
  • MCDONNELL & MILLER
  • Switch, FlowSwitch,Flow
  • Item # 1RF63
  • Mfr. Model # FS5-1
  • 1/3 HP, General Purpose, Electrically Operated, Max. HP -, - Phase, - Hz, Min. Flow Rate (GPM) 1.5, Max. Flow...More

Liquid Flow Switch,Rotor,SPDT,35mA/95mA
  • GEMS SENSORS
  • Liquid Flow Switch, Rotor, SPDT, 35mA/95mALiquid Flow Switch,Rotor,SPDT,35mA/95mA
  • Item # 1AMB2
  • Mfr. Model # RFS 155425
  • Liquid Flow Switch, Rotor, Flow Rate 0.1 to 5.0 GPM, Connection Size (In.) 1/4 FNPT, Min. Ambient Temp. -20...More

Liquid Flow Switch,Piston,SPST,20VA
  • GEMS SENSORS
  • Liquid Flow Switch, Piston, SPST, 20VALiquid Flow Switch,Piston,SPST,20VA
  • Item # 1ALV7
  • Mfr. Model # FS-380 181130
  • Liquid Flow Switch, Piston, Flow Rate 0.15 GPM, Connection Size (In.) 3/8 MNPT, Min. Ambient Temp. -20 F,...More

Liquid Flow Switch,Piston,SPST,20VA
  • GEMS SENSORS
  • Liquid Flow Switch, Piston, SPST, 20VALiquid Flow Switch,Piston,SPST,20VA
  • Item # 1ALG8
  • Mfr. Model # FS-927 70826
  • Liquid Flow Switch, Piston, Flow Rate 0.1 GPM, Connection Size (In.) 1/4 FNPT, Min. Ambient Temp. -20 F, Max....More

Liquid Flow Switch,Paddle,SPDT,20VA
  • GEMS SENSORS
  • Liquid Flow Switch, Paddle, SPDT, 20VALiquid Flow Switch,Paddle,SPDT,20VA
  • Item # 1AKZ4
  • Mfr. Model # FS-550 29609
  • Liquid Flow Switch, Paddle, Flow Rate 15-48 GPM, Connection Size (In.) 1 MNPT, Min. Ambient Temp. -30 F, Max....More

Switch,Liquid Flow
  • MCDONNELL & MILLER
  • Switch, Liquid FlowSwitch,Liquid Flow
  • Item # 4RC72
  • Mfr. Model # FS7-4W
  • Industrial/Heavy-duty Switch, Min. Flow Rate 4.8 GPM, Max. Flow GPM 7.7, Connection Size (In.) 1 1/4 NPT,...More

Switch,Flow
  • MCDONNELL & MILLER
  • Switch, FlowSwitch,Flow
  • Item # 1RF65
  • Mfr. Model # FS6-W-3/4
  • High Sensitivity Switch, Min. Flow Rate 0.12 GPM, Max. Flow GPM 2.5, Connection Size (In.) 3/4 NPT, Switch...More

Liquid Flow Switch,Shuttle,SPDT,20VA
  • GEMS SENSORS
  • Liquid Flow Switch, Shuttle, SPDT, 20VALiquid Flow Switch,Shuttle,SPDT,20VA
  • Item # 1ALD6
  • Mfr. Model # FS-200 26616
  • Liquid Flow Switch, Shuttle, Flow Rate 5.0 to 15.0 GPM, Connection Size (In.) 1 FNPT, Min. Ambient Temp. -20...More

Liquid Flow Switch,Shuttle,SPST, NO,20VA
  • GEMS SENSORS
  • Liquid Flow Switch, Shuttle, SPST, NO, 20VALiquid Flow Switch,Shuttle,SPST, NO,20VA
  • Item # 1ALA3
  • Mfr. Model # FS-500 170233
  • Liquid Flow Switch, Shuttle, Flow Rate 1 GPM, Connection Size (In.) 3/4 FNPT, Max. Ambient Temp. 212 F, Max....More

Flow Switch, 3.5 to 600,SPDT
  • TACO
  • Flow Switch, 3.5 to 600, SPDTFlow Switch, 3.5 to 600,SPDT
  • Item # 29YM30
  • Mfr. Model # IFS01BF-1
  • Flow Switch, Industrial, Max. HP 120VAC, 1/8 HP, 240VAC, 1/4 HP, 1 Phase, 60 Hz, Min. Flow Rate (GPM) 4.5,...More

Liquid Flow Switch,Shuttle,SPDT,20VA
  • GEMS SENSORS
  • Liquid Flow Switch, Shuttle, SPDT, 20VALiquid Flow Switch,Shuttle,SPDT,20VA
  • Item # 1ALD5
  • Mfr. Model # FS-200 26615
  • Liquid Flow Switch, Shuttle, Flow Rate 1.0 to 6.0 GPM, Connection Size (In.) 1 FNPT, Min. Ambient Temp. -20...More

Switch,Flow
  • MCDONNELL & MILLER
  • Switch, FlowSwitch,Flow
  • Item # 1RF64
  • Mfr. Model # FS6-3/4
  • Heavy-duty, High Sensitivity Switch, Min. Flow Rate 0.12 GPM, Max. Flow GPM 2.5, Connection Size (In.) 3/4...More

Liquid Flow Switch,Piston,SPST,20VA
  • GEMS SENSORS
  • Liquid Flow Switch, Piston, SPST, 20VALiquid Flow Switch,Piston,SPST,20VA
  • Item # 1ALV9
  • Mfr. Model # FS-380 168433
  • Liquid Flow Switch, Piston, Flow Rate 0.5 GPM, Connection Size (In.) 3/8 MNPT, Min. Ambient Temp. -20 F, Max....More

Flow Protector,Booster Pump,230 V
  • DAYTON
  • Flow Protector, Booster Pump, 230 VFlow Protector,Booster Pump,230 V
  • Item # 1DGZ8
  • Mfr. Model # 1DGZ8
  • Flow Protector, Max. HP 2, 1 Phase, 50/60 Hz, Min. Flow Rate 1 GPM, Connection Size (In.) 1 FNPT Slip PVC,...More

Flow Protector,Booster Pump,115 V
  • DAYTON
  • Flow Protector, Booster Pump, 115 VFlow Protector,Booster Pump,115 V
  • Item # 1DGZ7
  • Mfr. Model # 1DGZ7
  • Flow Protector, Max. HP 3/4, 1 Phase, 50/60 Hz, Min. Flow Rate 1 GPM, Connection Size (In.) 1 FNPT Slip PVC,...More

Liquid Flow Switch,Shuttle,SPST, NO,20VA
  • GEMS SENSORS
  • Liquid Flow Switch, Shuttle, SPST, NO, 20VALiquid Flow Switch,Shuttle,SPST, NO,20VA
  • Item # 1ALA1
  • Mfr. Model # FS-500 170232
  • Liquid Flow Switch, Shuttle, Flow Rate 0.5 GPM, Connection Size (In.) 3/4 FNPT, Max. Ambient Temp. 212 F,...More

Switch,Flow
  • JOHNSON CONTROLS
  • Switch, FlowSwitch,Flow
  • Item # 20XJ10
  • Mfr. Model # F61MB-5C
  • Flow Switch, Water, Max. HP 1, 1 Phase, Min. Flow Rate (GPM) 4.2, Max. Flow GPM 730, Flow Rate varies,...More

Results per page: 16 | 32 | 48

An efficient flow switch from Grainger can accurately monitor the flow of air, steam or liquid, then send a signal to a pump to turn itself on or itself shut off. Liquid flow switches can be used to help regulate systems such hydronic heating, plumbing, water cooling equipment, liquid transfer, water treatment and more. Air flow switches can be used to help operate cleanroom filter systems, duct type heating, air ventilating and more. Shop Grainger for dependable flow switches!

Note: Product availability is real-time basis and adjusted continuously. The product will be reserved for you when you complete your order. More