Flow Switches

Flow Switches monitor and control liquid, gas, or steam flow in your hydronic systems. These devices trigger when flow hits preset rates, preventing damage and ensuring proper operation. Jackson Systems offers switches in multiple materials and pipe sizes to fit your exact project needs.

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Showing 145–192 of 255 resultsSorted by popularity

Liquid Level Switch, Brass, SPDT, 1″ Side Wall Mount, Explosion Proof

Dwyer

SKU: L6EPB-B-S-3-A
$466.74
MSRP: $536.75
You save 15%
Dwyer L6EPB-B-S-3-A Liquid Level Switch, Brass, SPDT, 1" Side Wall Mount quantity
Liquid Level Switch, Brass, SPDT, 1″ Line Size, Horizontal Mount

Dwyer

SKU: L6EPB-B-S-3-0
$404.03
MSRP: $464.63
You save 15%
Dwyer L6EPB-B-S-3-0 Liquid Level Switch, Brass, SPDT, 1" Horizontal Mount quantity
Liquid Level Switch, Brass, SPDT, 1″ Line, Explosion Proof, Horizontal

Dwyer

SKU: L6-EPB-B-S-3-H
$542.93
MSRP: $624.37
You save 15%
Dwyer L6-EPB-B-S-3-H Liquid Level Switch, Brass, SPDT, 1" Line, Explosion Proof quantity
Float Switch, Brass Body, 316 SS Float, Side Wall Mount, SPDT

Dwyer

SKU: L4
$857.83
MSRP: $986.50
You save 15%
Dwyer L4 Float Switch, Brass/316 SS, Side Wall Mount, Weatherproof & Explosion Proof, SPDT quantity
Plastic Flow Meter, 1″ NPT, 3–30 GPM / 11–113 LPM Range

Dwyer

SKU: HFPC-3-4
$417.38
MSRP: $479.99
You save 15%
Dwyer HFPC-3-4 Plastic Flow Meter, 1" NPT, 3–30 GPM / 11–113 LPM quantity
Paddle Flow Switch, NPT, Conduit, NEMA 4, SPDT, 145 PSIG

Dwyer

SKU: FS-2-CND
$115.19
MSRP: $132.47
You save 15%
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Vertical Level Switch, 316 SS Stem & Float, 1/8″ NPT, 300°F, 450 PSIG

Dwyer

SKU: F7-SS2
$94.41
MSRP: $108.57
You save 15%
Dwyer F7-SS2 Vertical Level Switch, 316 SS Stem & Float, 1/8" NPT, 300°F, 450 PSIG quantity
Air Flow Switch, Adjustable 400–1600 FPM, SS Vane, SPDT

Dwyer

SKU: 530
$164.46
MSRP: $189.13
You save 15%
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120V AC 1/2″ MPT Pressure or Flow Switch

Henry Technologies

SKU: S-9400A
$132.00
MSRP: $151.80
You save 15%
Henry Technologies S-9400A 120V AC 1/2" MPT Switch quantity
Paddle Wheel Flow Meter Sensor for Refrigeration Systems

Heatcraft Refrigeration

SKU: 2291030
$1,803.55
MSRP: $2,074.08
You save 15%
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Airflow Switch for Greenheck Ventilation Systems

Greenheck

SKU: 382993
$102.00
MSRP: $117.30
You save 15%
Greenheck 382993 Airflow Switch quantity
Flow Switch, Replacement Part

Midea

SKU: 7839747
$162.79
MSRP: $187.21
You save 15%
Midea 7839747 Flow Switch quantity
Flow Sensor B2HA 399-530 for Midea HVAC Systems

Midea

SKU: 7835114
$441.56
MSRP: $507.79
You save 15%
Midea 7835114 Flow Sensor B2HA 399-530 quantity
Flow Switch Replacement Part

Midea

SKU: 7828795
$119.04
MSRP: $136.90
You save 15%
Midea 7828795 Flow Switch quantity
Flow Sensor for B1KA / CPK Applications

Midea

SKU: 7828749
$197.38
MSRP: $226.99
You save 15%
Midea 7828749 Flow Sensor B1KA / CPK quantity
Flow Switch for Midea HVAC Systems

Midea

SKU: 7826314
$119.04
MSRP: $136.90
You save 15%
Midea 7826314 Flow Switch quantity
Flow Controller for Utica-Dunkirk Hydronic Systems

Utica-Dunkirk

SKU: FE3980C350
$48.41
MSRP: $55.67
You save 13%
Utica-Dunkirk FE3980C350 Flow Controller quantity
BD Flow Detector for Boiler System Protection

Utica-Dunkirk

SKU: BD8435280
$18.90
MSRP: $21.74
You save 15%
Utica-Dunkirk BD8435280 BD Flow Detector quantity
1″ NPT Flow Measurement Valve CSM61M1-T

Watts

SKU: 0856740
$344.64
MSRP: $396.34
You save 15%
Watts 0856740 1" NPT Flow Measurement Valve CSM61M1-T quantity
FS-200-W 1″ NPT Flow Switch

Watts

SKU: 00063067
$595.59
MSRP: $684.93
You save 15%
Watts 00063067 FS-200-W 1" NPT Flow Switch quantity
SPDT Float Level Switch with 40′ Cable

Warrick-Gems Sensors & Controls

SKU: MGRE40W
$309.93
MSRP: $356.42
You save 13%
Warrick-Gems Sensors & Controls MGRE40W SPDT Float Level Switch 40' quantity
Dual Function Liquid Level Control Module

Warrick-Gems Sensors & Controls

SKU: DFM1C0060606
$496.74
MSRP: $571.25
You save 15%
Warrick-Gems Sensors & Controls DFM1C0060606 Dual Function Control quantity
FS-380 Flow Switch, 0–1.0 GPM Range

Warrick-Gems Sensors & Controls

SKU: 192563
$326.56
MSRP: $375.54
You save 15%
Warrick-Gems Sensors & Controls 192563 FS-380 Flow Switch 0–1.0 GPM quantity
0.5 GPM FS-380 Flow Meter for HVAC & Hydronic Systems

Warrick-Gems Sensors & Controls

SKU: 179993
$788.16
MSRP: $906.38
You save 15%
Warrick-Gems Sensors & Controls 179993 0.5 GPM FS-380 Flow Meter quantity
FS-380 3/8″ MPT Flow Switch for Fluid Monitoring

Warrick-Gems Sensors & Controls

SKU: 178353
$340.73
MSRP: $391.84
You save 15%
Warrick-Gems Sensors & Controls 178353 FS-380 3/8" MPT Flow Switch quantity
Stainless Steel Float Switch for Liquid Level Detection

Warrick-Gems Sensors & Controls

SKU: 164870
$482.90
MSRP: $555.34
You save 15%
Warrick-Gems Sensors & Controls 164870 Float Switch, Stainless Steel quantity
Pipe Flow Meter for WMnt-155-Combi Boiler Systems

Weil McLain

SKU: 640-000-099
$60.21
MSRP: $69.24
You save 15%
Weil McLain 640-000-099 Pipe Flow Meter WMnt-155-Combi quantity
1″ BSPT SPDT Snap Switch General Purpose Liquid Flow Switch, 160 PSI

McDonnell & Miller

SKU: FS8-WJ
$343.46
MSRP: $394.98
You save 15%
Xylem-McDonnell & Miller FS8-WJ 1" BSPT SPDT Liquid Flow Switch, 160 PSI quantity
1-1/4″ NPT SPDT Industrial Liquid Flow Switch, 300 PSI, NEMA 4X

McDonnell & Miller

SKU: FS7-4W
$812.25
MSRP: $934.09
You save 15%
McDonnell & Miller FS7-4W 1-1/4" NPT SPDT Industrial Liquid Flow Switch 120201 quantity
1-1/4″ NPT SPDT Industrial Liquid Flow Switch, SS Body, 1000 PSI, NEMA 4X

McDonnell & Miller

SKU: FS7-4SW
$1,301.09
MSRP: $1,496.25
You save 15%
McDonnell & Miller FS7-4SW 1-1/4" NPT SPDT Industrial Liquid Flow Switch, SS Body, 1000 PSI, NEMA 4X quantity
1-1/4″ NPT Industrial Liquid Flow Switch, SS Body, 1000 PSI Max

McDonnell & Miller

SKU: FS7-4S
$1,096.85
MSRP: $1,261.38
You save 15%
Xylem-McDonnell & Miller FS7-4S 1-1/4" NPT Industrial Liquid Flow Switch, SS Body, 1000 PSI quantity
1-1/4″ NPT SPDT Explosion Proof Liquid Flow Switch, 300 PSI

McDonnell & Miller

SKU: FS7-4E
$992.74
MSRP: $1,141.65
You save 15%
McDonnell & Miller FS7-4E 1-1/4" NPT SPDT Explosion Proof Liquid Flow Switch 120100 quantity
1-1/4″ NPT SPDT Industrial Liquid Flow Switch, 300 PSI, Bronze Paddles

McDonnell & Miller

SKU: FS7-4
$644.48
MSRP: $741.15
You save 15%
Xylem-McDonnell & Miller FS7-4 1-1/4" NPT SPDT Industrial Liquid Flow Switch 119700 quantity
3/4″ NPT In-Line High Sensitivity Liquid Flow Switch, SPDT

McDonnell & Miller

SKU: FS6-3/4
$635.74
MSRP: $731.10
You save 15%
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1″ NPT In-Line High Sensitivity Liquid Flow Switch, SPDT

McDonnell & Miller

SKU: FS6-1
$635.74
MSRP: $731.10
You save 15%
Read more
1″ NPT In-Line General Purpose Flow Switch, Stainless Steel Body

McDonnell & Miller

SKU: FS5-S-1
$1,663.51
MSRP: $1,913.04
You save 15%
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3/4″ NPT In-Line General Purpose Flow Switch, SPDT

McDonnell & Miller

SKU: FS5-3/4
$413.73
MSRP: $475.79
You save 15%
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1″ NPT In-Line General Purpose Flow Switch, Snap-Acting SPDT

McDonnell & Miller

SKU: FS5-1
$413.73
MSRP: $475.79
You save 15%
Xylem-McDonnell & Miller FS5-1 1" NPT In-Line Flow Switch SPDT 114780 quantity
1″ NPT SPDT Liquid Flow Switch, Stainless Steel, 160 PSI Max

McDonnell & Miller

SKU: FS4-3S
$722.56
MSRP: $830.94
You save 15%
Xylem-McDonnell & Miller FS4-3S 1" NPT SPDT General Purpose Liquid Flow Switch quantity
1″ NPT SPDT Liquid Flow Switch, 160 PSI, SS Paddles, Test Button

McDonnell & Miller

SKU: FS4-3RP-T
$304.80
MSRP: $350.52
You save 15%
Xylem-McDonnell & Miller FS4-3RP-T 1" NPT SPDT General Purpose Liquid Flow Switch quantity
1″ BSPT SPDT Liquid Flow Switch, 160 PSI Max, SS Paddles

McDonnell & Miller

SKU: FS4-3J
$257.73
MSRP: $296.39
You save 15%
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1″ NPT General Purpose Liquid Flow Switch, 2-SPDT, 160 PSI Max

McDonnell & Miller

SKU: FS4-3D
$379.10
MSRP: $435.97
You save 15%
Xylem-McDonnell & Miller FS4-3D 1" NPT General Purpose Liquid Flow Switch, 2-SPDT, 160 PSI (114550) quantity
1″ NPT SPDT Snap Switch Liquid Flow Switch with NEMA 4 Enclosure

McDonnell & Miller

SKU: FS254
$293.44
MSRP: $337.46
You save 15%
Xylem-McDonnell & Miller FS254 1" NPT SPDT Liquid Flow Switch, NEMA 4 | SKU: FS254 quantity
1″ NPT SPDT Liquid Flow Switch with NEMA 1 Enclosure, SS Paddles

McDonnell & Miller

SKU: FS251
$219.13
MSRP: $252.00
You save 15%
McDonnell & Miller FS251 1" NPT SPDT Liquid Flow Switch, NEMA 1, SS Paddles quantity
1/2″ BSPT In-Line High Sensitivity Liquid Flow Switch, SPDT

McDonnell & Miller

SKU: FS1-J
$412.21
MSRP: $474.04
You save 15%
Xylem-McDonnell & Miller FS1-J 1/2" BSPT In-Line Liquid Flow Switch, SPDT quantity
1/2″ NPT In-Line High Sensitivity Liquid Flow Switch, SPDT

McDonnell & Miller

SKU: FS-1
$382.90
MSRP: $440.34
You save 15%
Xylem-McDonnell & Miller FS-1 1/2" NPT In-Line High Sensitivity Flow Switch quantity
6″ & 1″ Paddle Kit for FS4-3RP Flow Switch (FS4-15RP)

McDonnell & Miller

SKU: 336101
$25.24
MSRP: $29.03
You save 15%
Xylem-McDonnell & Miller 336101 6" & 1" Paddle Kit for FS4-3RP (FS4-15RP) quantity
Snap Switch Assembly for FS250 Flow Switch (SW-FS250)

McDonnell & Miller

SKU: 310802
$117.21
MSRP: $134.79
You save 15%
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Flow Switches

Brand

Category

Voltage

Brand

Category

Voltage