Flow Switches
Liquid Flow Switches
$0.00 / eachSKU: MH1138McDonnell & Miller model number FS1-G is a 120 volt, single pole, double throw, snap liquid flow switch with gold plated contacts for high sensitivity requirements on low to moderate flow rates such as air conditioning, heating, and hydronic systems. Explore More- Manufacturer : McDonnell & Miller
- Part Number : 113250
- List Price $490.00 $381.28 / eachSKU: MH11392 in stockMcDonnell & Miller model number FS1-W is a 120 volt, single pole, double throw, snap liquid flow switch for high sensitivity requirements on low to moderate flow rates such as air conditioning, heating, and hydronic systems. Explore More
- Manufacturer : McDonnell & Miller
- Part Number : 113601
List Price $490.00 $381.28 / each - List Price $435.00 $338.48 / eachSKU: MH11405 in stockMcDonnell & Miller model number FS1 is a 120 volt, single pole, double throw, snap liquid flow switch for high sensitivity requirements on low to moderate flow rates such as air conditioning, heating, and hydronic systems. Explore More
- Manufacturer : McDonnell & Miller
- Part Number : 113200
List Price $435.00 $338.48 / each - List Price $250.00 $194.53 / eachSKU: MH114210 in stockMcDonnell & Miller 120611 Liquid Flow Switch model FS251 with NEMA 1 enclosure, 1" NPTM pipe connection, and four stainless steel paddle options (1", 2", 3", and 6"). Explore More
- Manufacturer : McDonnell & Miller
- Part Number : 120611
List Price $250.00 $194.53 / each - List Price $335.00 $260.67 / eachSKU: MH1142C6 in stockMcDonnell & Miller model number FS254 is a 120 volt, single pole, double throw, snap liquid flow switch for starting and stopping electrical equipment such as alarms, motors, and automatic burners. Explore More
- Manufacturer : McDonnell & Miller
- Part Number : 120610
List Price $335.00 $260.67 / each - List Price $345.00 $268.45 / eachSKU: MH11465 in stockMcDonnell & Miller model number FS4-3RP-T is a 120 volt, single pole, double throw, snap liquid flow switch for universal general purpose applications for starting and stopping electrical operation equipment such as signals, alarms, motors, automatic burners, and metering devices. Explore More
- Manufacturer : McDonnell & Miller
- Part Number : 114639
List Price $345.00 $268.45 / each - List Price $820.00 $638.06 / eachSKU: MH1146B3 in stockThe McDonnell & Miller 114641 is a general-purpose liquid flow switch model FS4-3S with a 1" NPT connection, stainless steel body, and Monel bellows. The maximum pressure is 160 psi, and the maximum temperature is 300 degrees Fahrenheit. Four stainless steel paddles (1", 2", 3", and 6") are included. Explore More
- Manufacturer : McDonnell & Miller
- Part Number : 114641
List Price $820.00 $638.06 / each - List Price $430.00 $334.59 / eachSKU: MH1148Ships within 2 weeksMcDonnell & Miller model number FS4-3D is a 120 volt, double pole, double throw, snap liquid flow switch for universal general purpose applications for starting and stopping electrical operation equipment such as signals, alarms, motors, automatic burners, and metering devices. Explore More
- Manufacturer : McDonnell & Miller
- Part Number : 114550
List Price $430.00 $334.59 / each - List Price $965.00 $750.89 / eachSKU: MH1148AShips within 2 weeksMcDonnell & Miller model number FS4-3-DS is a 120 volt, double pole, double throw, snap liquid flow switch for universal general purpose applications for starting and stopping electrical operation equipment such as signals, alarms, motors, automatic burners, and metering devices. Explore More
- Manufacturer : McDonnell & Miller
- Part Number : 114642
List Price $965.00 $750.89 / each - List Price $430.00 $334.59 / eachSKU: MH1150Ships within 2 weeksMcDonnell & Miller model number FS4-3T is a 120 volt, single pole, double throw, snap liquid flow switch for universal general purpose applications for starting and stopping electrical operation equipment such as signals, alarms, motors, automatic burners, and metering devices. Explore More
- Manufacturer : McDonnell & Miller
- Part Number : 114800
List Price $430.00 $334.59 / each - List Price $430.00 $334.59 / eachSKU: MH1150AShips within 2 weeksMcDonnell & Miller model number FS4-3T1-1 is a 120 volt, single pole, double throw, snap liquid flow switch for universal general purpose applications for starting and stopping electrical operation equipment such as signals, alarms, motors, automatic burners, and metering devices. Explore More
- Manufacturer : McDonnell & Miller
- Part Number : 115100
List Price $430.00 $334.59 / each - List Price $430.00 $334.59 / eachSKU: MH1150BShips within 2 weeksMcDonnell & Miller model number FS4-3T2-3/4" is a 120 volt, single pole, double throw, snap liquid flow switch for universal general purpose applications for starting and stopping electrical operation equipment such as signals, alarms, motors, automatic burners, and metering devices. Explore More
- Manufacturer : McDonnell & Miller
- Part Number : 114900
List Price $430.00 $334.59 / each - List Price $430.00 $334.59 / eachSKU: MH1150CShips within 2 weeksMcDonnell & Miller model number FS4-3T2-1" is a 120 volt, single pole, double throw, snap liquid flow switch for universal general purpose applications for starting and stopping electrical operation equipment such as signals, alarms, motors, automatic burners, and metering devices. Explore More
- Manufacturer : McDonnell & Miller
- Part Number : 115200
List Price $430.00 $334.59 / each - List Price $430.00 $335.27 / eachSKU: MH1150DShips within 2 weeksMcDonnell & Miller model number FS4-3T3-1" is a 120 volt, single pole, double throw, snap liquid flow switch for universal general purpose applications for starting and stopping electrical operation equipment such as signals, alarms, motors, automatic burners, and metering devices. Explore More
- Manufacturer : McDonnell & Miller
- Part Number : 115300
List Price $430.00 $335.27 / each - List Price $430.00 $334.59 / eachSKU: MH11511 in stockMcDonnell & Miller model number FS4-3T3 is a 120 volt, single pole, double throw, snap liquid flow switch for universal general purpose applications for starting and stopping electrical operation equipment such as signals, alarms, motors, automatic burners, and metering devices. Explore More
- Manufacturer : McDonnell & Miller
- Part Number : 115000
List Price $430.00 $334.59 / each - List Price $445.00 $346.27 / eachSKU: MH1155Ships within 2 weeksMcDonnell & Miller model number FS5-3/4" is a 120 volt, single pole, double throw, snap liquid flow switch for general purpose applications requiring low flow rate sensitivity. Explore More
- Manufacturer : McDonnell & Miller
- Part Number : 114760
List Price $445.00 $346.27 / each - List Price $445.00 $346.27 / eachSKU: MH1156Ships within 2 weeksMcDonnell & Miller model number FS5-1" is a 120 volt, single pole, double throw, snap liquid flow switch for general purpose applications requiring low flow rate sensitivity. Explore More
- Manufacturer : McDonnell & Miller
- Part Number : 114780
List Price $445.00 $346.27 / each - List Price $1,865.00 $1,451.20 / eachSKU: MH1156AShips within 2 weeksMcDonnell & Miller FS5-DS-1" model number is a stainless steel 120 volt, single pole, double throw, snap liquid flow switch for general purpose applications requiring low flow rate sensitivity. Explore More
- Manufacturer : McDonnell & Miller
- Part Number : 114793
List Price $1,865.00 $1,451.20 / each - List Price $1,775.00 $1,381.17 / eachSKU: MH1156BShips within 2 weeksMcDonnell & Miller model number FS5-S-1" is a stainless steel 120 volt, single pole, double throw, snap liquid flow switch for general purpose applications requiring low flow rate sensitivity. Explore More
- Manufacturer : McDonnell & Miller
- Part Number : 114795
List Price $1,775.00 $1,381.17 / each - List Price $590.00 $459.09 / eachSKU: MH1157Ships within 2 weeksMcDonnell & Miller model number FS5D-3/4" is a 120 volt, double pole, double throw, snap liquid flow switch for general purpose applications requiring low flow rate sensitivity. Explore More
- Manufacturer : McDonnell & Miller
- Part Number : 114763
List Price $590.00 $459.09 / each
