Skip to: Content, Skip to: Main Content, Skip to: Footer


Refine By
 JavaScript Disabled
Your web browser does not have JavaScript enabled.
In order to use most of the functionality of this website, you will need to have JavaScript
enabled in your browser.
Please wait...
Home /  Pumps  /  Pump Controls  Remove  /  Flow Switches  Remove  /  GEMS SENSORS  Remove

93 Products Found

View
 
 
Change Display:List ViewGrid View
Select
Items to
Select Items to CompareGrainger Item # and Description Compliance
& Notes
Brand &
Model #
Catalog
Page #
Availability Ship
Quantity
Price
Liquid Flow Switch,Paddle,SPDT,20VA
View Larger
Liquid Flow Switch,Paddle,SPDT,20VA
Item # 1AKZ4
Liquid Flow Switch, Paddle, Flow Rate 15-48 GPM, Connection Size (In.) 1 MNPT, Min. Ambient Temp. -30 F, Max. Ambient Temp. 300 F
GEMS SENSORS
FS-550 BR
4122Typically in Stock  Help

1
$297.75
  
See All: Flow Switches
  Rating Be the first to write a review
Add to Personal List Quantity
Liquid Flow Switch,Shuttle,SPST, NO,20VA
View Larger
Liquid Flow Switch,Shuttle,SPST, NO,20VA
Item # 1ALA3
Liquid Flow Switch, Shuttle, Flow Rate 1 GPM, Connection Size (In.) 3/4 FNPT, Max. Ambient Temp. 212 F, Max. Fluid Temp. 212 F, Max. Pressure 100 PSI
GEMS SENSORS
FS-500 1.0 GPM
4122Typically in Stock  Help

1
$107.40
  
See All: Flow Switches
  Rating Be the first to write a review
Add to Personal List Quantity
Liquid Flow Switch,Piston,SPST,10VA
View Larger
Liquid Flow Switch,Piston,SPST,10VA
Item # 1ALV3
Liquid Flow Switch, Piston, Flow Rate 0.5 GPM, Connection Size (In.) 3/8 MNPT, Max. Ambient Temp. 212 F, Max. Fluid Temp. 212 F, Max. Pressure 125 PSI
GEMS SENSORS
FS-380P 0.5 GPM
4122Typically in Stock  Help

1
$82.30
  
See All: Flow Switches
  Rating Be the first to write a review
Add to Personal List Quantity
Liquid Flow Switch,Shuttle,SPST, NO,20VA
View Larger
Liquid Flow Switch,Shuttle,SPST, NO,20VA
Item # 1ALA1
Liquid Flow Switch, Shuttle, Flow Rate 0.5 GPM, Connection Size (In.) 3/4 FNPT, Max. Ambient Temp. 212 F, Max. Fluid Temp. 212 F, Max. Pressure 100 PSI
GEMS SENSORS
FS-500 0.5 GPM
4122Typically in Stock  Help

1
$107.40
  
See All: Flow Switches
  Rating Be the first to write a review
Add to Personal List Quantity
Liquid Flow Switch,Piston,SPST,10VA
View Larger
Liquid Flow Switch,Piston,SPST,10VA
Item # 1ALV4
Liquid Flow Switch, Piston, Flow Rate 1 GPM, Connection Size (In.) 3/8 MNPT, Max. Ambient Temp. 212 F, Max. Fluid Temp. 212 F, Max. Pressure 125 PSI
GEMS SENSORS
FS-380P 1.0 GPM
4122Typically in Stock  Help

1
$82.30
  
See All: Flow Switches
  Rating Be the first to write a review
Add to Personal List Quantity
Liquid Flow Switch, 0.5 GPM, NO
View Larger
Liquid Flow Switch, 0.5 GPM, NO
Item # 4JPH9
Liquid Flow Switch, Piston, Flow Rate 0.5 GPM, Connection Size (In.) 1/2 MNPT, Switch Enclosure Polypropylene, Max. Fluid Temp. 212 F
GEMS SENSORS
FS-150 NO 0.5GPM
4122Typically in Stock  Help

1
$109.30
  
See All: Flow Switches
  Rating Be the first to write a review
Add to Personal List Quantity
Liquid Flow Switch,Piston,SPST,20VA
View Larger
Liquid Flow Switch,Piston,SPST,20VA
Item # 1ALG2
Liquid Flow Switch, Piston, Flow Rate 0.1 GPM, Connection Size (In.) 1/4 FNPT, Min. Ambient Temp. -20 F, Max. Ambient Temp. 200 F
GEMS SENSORS
FS-927 0.1 GPM NO
4122Typically in Stock  Help

1
$156.00
  
See All: Flow Switches
  Rating Be the first to write a review
Add to Personal List Quantity
Liquid Flow Switch,Rotor,SPDT,35mA/95mA
View Larger
Liquid Flow Switch,Rotor,SPDT,35mA/95mA
Item # 1AMB2
Liquid Flow Switch, Rotor, Flow Rate 0.1 to 5.0 GPM, Connection Size (In.) 1/4 FNPT, Min. Ambient Temp. -20 F, Max. Ambient Temp. 150 F
GEMS SENSORS
RFS 1/4" NPT Poly
4122Typically in Stock  Help

1
$285.75
  
See All: Flow Switches
  Rating Be the first to write a review
Add to Personal List Quantity
Liquid Flow Switch,Shuttle,SPDT,20VA
View Larger
Liquid Flow Switch,Shuttle,SPDT,20VA
Item # 1ALD5
Liquid Flow Switch, Shuttle, Flow Rate 1.0 to 6.0 GPM, Connection Size (In.) 1 FNPT, Min. Ambient Temp. -20 F, Max. Ambient Temp. 200 F
GEMS SENSORS
FS-200 1.0-6.0 GPM
4123Typically in Stock  Help

1
$309.00
  
See All: Flow Switches
  Rating Be the first to write a review
Add to Personal List Quantity
Liquid Flow Switch,Piston,SPST,20VA
View Larger
Liquid Flow Switch,Piston,SPST,20VA
Item # 1ALV9
Liquid Flow Switch, Piston, Flow Rate 0.5 GPM, Connection Size (In.) 3/8 MNPT, Min. Ambient Temp. -20 F, Max. Ambient Temp. 275 F
GEMS SENSORS
FS-380 BR 0.5 GPM
4122Typically in Stock  Help

1
$160.00
  
See All: Flow Switches
  Rating Be the first to write a review
Add to Personal List Quantity
Liquid Flow Switch,Rotor,SPDT,35mA/95mA
View Larger
Liquid Flow Switch,Rotor,SPDT,35mA/95mA
Item # 1AMB3
Liquid Flow Switch, Rotor, Flow Rate 1.5 to 20.0 GPM, Connection Size (In.) 1/2 FNPT, Min. Ambient Temp. -20 F, Max. Ambient Temp. 150 F
GEMS SENSORS
RFS 1/2" NPT Poly
4122Typically in Stock  Help

1
$285.75
  
See All: Flow Switches
  Rating Be the first to write a review
Add to Personal List Quantity
Liquid Flow Switch,Piston,SPDT,20VA
View Larger
Liquid Flow Switch,Piston,SPDT,20VA
Item # 1ALD8
Liquid Flow Switch, Piston, Flow Rate 0.5 to 20.0 GPM, Connection Size (In.) 1/2 FNPT, Min. Ambient Temp. -20 F, Max. Ambient Temp. 300 F
GEMS SENSORS
FS-10798 SS Liquid
4123Typically in Stock  Help

1
$923.50
  
See All: Flow Switches
  Rating Be the first to write a review
Add to Personal List Quantity
Liquid Flow Switch,Rotor,SPDT,35mA/95mA
View Larger
Liquid Flow Switch,Rotor,SPDT,35mA/95mA
Item # 1AMB5
Liquid Flow Switch, Rotor, Flow Rate 1.5 to 20.0 GPM, Connection Size (In.) 1/2 FNPT, Min. Ambient Temp. -20 F, Max. Ambient Temp. 150 F
GEMS SENSORS
RFS 1/2" NPT BR
4122Typically in Stock  Help

1
$379.75
  
See All: Flow Switches
  Rating Be the first to write a review
Add to Personal List Quantity
Liquid Flow Switch,Piston,SPST,20VA
View Larger
Liquid Flow Switch,Piston,SPST,20VA
Item # 1ALV8
Liquid Flow Switch, Piston, Flow Rate 0.25 GPM, Connection Size (In.) 3/8 MNPT, Min. Ambient Temp. -20 F, Max. Ambient Temp. 275 F
GEMS SENSORS
FS-380 BR 0.25 GPM
4122Typically in Stock  Help

1
$160.00
  
See All: Flow Switches
  Rating Be the first to write a review
Add to Personal List Quantity
Liquid Flow Switch,Shuttle,SPST, NO,20VA
View Larger
Liquid Flow Switch,Shuttle,SPST, NO,20VA
Item # 1AKZ8
Liquid Flow Switch, Shuttle, Flow Rate 0.25 GPM, Connection Size (In.) 3/4 FNPT, Max. Ambient Temp. 212 F, Max. Fluid Temp. 212 F, Max. Pressure 100 PSI
GEMS SENSORS
FS-500 0.25 GPM
4122Typically in Stock  Help

1
$107.40
  
See All: Flow Switches
  Rating Be the first to write a review
Add to Personal List Quantity
Liquid Flow Switch,Shuttle,SPST, NO,20VA
View Larger
Liquid Flow Switch,Shuttle,SPST, NO,20VA
Item # 1ALA5
Liquid Flow Switch, Shuttle, Flow Rate 2.5 GPM, Connection Size (In.) 3/4 FNPT, Max. Ambient Temp. 212 F, Max. Fluid Temp. 212 F, Max. Pressure 100 PSI
GEMS SENSORS
FS-500 2.5 GPM
N/A Typically in Stock  Help

1
$107.40
  
See All: Flow Switches
  Rating Be the first to write a review
Add to Personal List Quantity
Select
Items to
Compare Selected ItemsGrainger Item # and Description Compliance
& Notes
Brand &
Model #
Catalog
Page #
Availability Ship
Quantity
Price
Sort by Grainger Item #
Compliance and Notes
Sort by Brand
Catalog Page #
Sort by Availability
Ship Quantity
Sort by Price

93 Products Found

View
 
 
Change Display:List ViewGrid View
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!
If the settings on your account have changed since this order was submitted, they will be updated when this order is approved.
Pricing and availability are not confirmed until the order is processed. Promotional pricing and offers associated with this order will only apply if the order is approved within the timeframe of the promotion.
Compare Products


AlertYou have selected too many items to compare, please select up to 8 items.
Please wait

Please wait while we process your request.

  • Questions? Call us
    1-800-Grainger
Email Sign Up
  • Get industry news,
    new product information,
    helpful tips and more.
  • Connect With Us
Home  |   Terms of Access  |  Terms of Sale  |  Return Policy  |  Privacy Policy   (Rev. October, 2012)  |  About our Ads  |  Sitemap
© 1994 - 2013 W.W. Grainger, Inc. All rights reserved.