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Flow Switches

24 Products
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The FSW800B-Series air-flow monitor provides a simple but reliable alternative to indicate positive or negative air flow of fans.

Product Number Media Type Velocity Range Max Process Temperature Wetted Materials Switch Rating and Type Wire Length Features
FSW802B
$71.58
63  In Stock
Air
Greater than 8.2 FPS
50 °C (122 °F)
Plastic
NO
20"
Mounting Clip and Clamp
FSW801B
$71.58
154  In Stock
Air
Greater than 8.2 FPS
50 °C (122 °F)
Plastic
NC
20"
Mounting Clip and Clamp
FSW803B
$71.58
267  In Stock
Air
Greater than 8.2 FPS
50 °C (122 °F)
Plastic
NC
20"
3.15" Finger Guard
FSW804B
$70.73
71  In Stock
Air
Greater than 8.2 FPS
50 °C (122 °F)
Plastic
NO
20"
3.15" Finger Guard
FSW807B
$71.58
134  In Stock
Air
Greater than 8.2 FPS
50 °C (122 °F)
Plastic
NC
20"
4.72" Finger Guard
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The FSW500 offers low cost flow monitoring with a variety of switch actuation points and low pressure drop. All wetted parts are polypropylene or stainless steel.

Product Number Media Type Accuracy Max Operating Pressure Max Process Temperature Process Connection Type Process Connection Size Wetted Materials Switch Rating and Type Wire Length Features
FSW503
$113.96
85  In Stock
Liquid
±20%
100 psi
100 °C (212 °F)
NPT Female
3/4"
Polypropylene, 316 SS, FKM
20 VA SPST
48"
1.00 GPM Switch Point
FSW506
$113.96
9  In Stock
Liquid
±20%
100 psi
100 °C (212 °F)
NPT Female
3/4"
Polypropylene, 316 SS, FKM
20 VA SPST
48"
5.00 GPM Switch Point
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The FST-200 flow switches use thermal dispersion technology to create a very accurate and economical method of sensing flow. Monitor fluids from 0.4 to 1.2 specific gravity.

Product Number Media Type Velocity Range Accuracy Max Operating Pressure Max Process Temperature Process Connection Type Process Connection Size Wetted Materials Switch Rating and Type Supply Power Wire Length Features
FST-221-SPST
$280.56
Available
in 8 weeks
Liquid
0.04 to 3 FPS
±5%
150 psi
60 °C (140 °F)
NPT male
2" to 12"
PP, PVDF
1 A SPST Relay
12 to 36 Vdc
10'
Switch Type Selectable, NO or NC
FST-211-SPST
$268.00
5  In Stock
Liquid
0.04 to 3 FPS
±5%
150 psi
60 °C (140 °F)
NPT male
3/4" to 1 1/2"
PP, PVDF
1 A SPST Relay
12 to 36 Vdc
10'
Switch Type Selectable, NO or NC
FST-212-SPST
$465.09
30  In Stock
Liquid
0.04 to 3 FPS
±5%
150 psi
60 °C (140 °F)
NPT male
3/4" to 1 1/2"
PVDF
1 A SPST Relay
12 to 36 Vdc
10'
Switch Type Selectable, NO or NC
FST-222-SPST
$478.39
Available
in 8 weeks
Liquid
0.04 to 3 FPS
±5%
150 psi
60 °C (140 °F)
NPT male
2" to 12"
PVDF
1 A SPST Relay
12 to 36 Vdc
10'
Switch Type Selectable, NO or NC
FST-211-SPST-25 FT
$324.23
Available
in 8 weeks
3.0 x 3/4
0.04 to 3 fps (Liquids)
PP/PVDF
SPST
Liquid
3/4 to 1 1/2 in
7.62 m (25 ft)
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The FSW-25 flow switch utilizes the force of liquid flow to propel its paddle and to detect the incoming flow or movement of the existing liquid in the pipe.

Product Number Media Type Flow Range Accuracy Max Operating Pressure Max Process Temperature Process Connection Type Process Connection Size Wetted Materials Switch Rating and Type Supply Power
FSW-25
$370.81
8  In Stock
Liquid
See Product Specs
±1%
355 psi
149 °C (300 °F)
PT
1"
304 SS, Aluminum
SPDT
200 Vdc
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The FST-320-Series thermal dispersion flow switches, especially designed for use with gases, sense changes in the heat transfer characteristics of the gases.

Product Number Media Type Velocity Range Accuracy Max Operating Pressure Max Process Temperature Process Connection Type Process Connection Size Wetted Materials Switch Rating and Type Supply Power Wire Length Features
FST-321-SPST
$295.75
9  In Stock
Gas
1 to 90 FPS
±5%
150 psi
60 °C (140 °F)
NPT male
3/4" to 1 1/2"
PP, PVDF
1 A SPST Relay
12 to 36 Vdc
10'
Switch Type Selectable, NO or NC
FST-322-SPST
$477.44
1  In Stock
Gas
1 to 90 FPS
±5%
150 psi
60 °C (140 °F)
NPT male
3/4" to 1 1/2"
PVDF
1 A SPST Relay
12 to 36 Vdc
10'
Switch Type Selectable, NO or NC
FST-323-SPST
$309.00
Available
in 8 weeks
Gas
1 to 90 FPS
±5%
150 psi
60 °C (140 °F)
NPT male
2" to 12"
PP, PVDF
1 A SPST Relay
12 to 36 Vdc
10'
Switch Type Selectable, NO or NC
FST-324-SPST
$490.70
Available
in 8 weeks
Gas
1 to 90 FPS
±5%
150 psi
60 °C (140 °F)
NPT male
2" to 12"
PVDF
1 A SPST Relay
12 to 36 Vdc
10'
Switch Type Selectable, NO or NC
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The FSW-420/30-Series monitors your relative flow rate for applications where the actual flow rate is not important. The FSW-420/30-Series is easy to install and use.

Product Number Connection Size Body Material Switch Type Compatible Media Wire Length Features
FSW-433
$405.62
1  In Stock
12 mm (0.47 in)
Anodized Aluminum
In-line Flow
Liquids
2 m (6.5 ft)
Standard
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The FS-100-Series offers low cost flow monitoring with a variety of switch actuation points and low pressure drop. All wetted parts are polypropylene.

Product Number Media Type Accuracy Max Operating Pressure Max Process Temperature Process Connection Type Process Connection Size Wetted Materials Switch Rating and Type Wire Length Features
FS-100-025
$89.43
Available
in 4 weeks
Liquid
±10%
120 psi
80°C (175°F)
NPT Female
3/4"
Polypropylene
50 VA SPST
12" (300mm)
0.25 GPM Switch Point
FS-100-050
$94.48
Available
in 4 weeks
Liquid
±10%
120 psi
80°C (175°F)
NPT Female
3/4"
Polypropylene
50 VA SPST
12" (300mm)
0.50 GPM Switch Point
FS-100-100
$89.43
Available
in 4 weeks
Liquid
±10%
120 psi
80°C (175°F)
NPT Female
3/4"
Polypropylene
50 VA SPST
12" (300mm)
1.00 GPM Switch Point
FS-100-200
$89.43
19  In Stock
Liquid
±10%
120 psi
80°C (175°F)
NPT Female
3/4"
Polypropylene
50 VA SPST
12" (300mm)
2.00 GPM Switch Point
FS-100-250
$94.48
48  In Stock
Liquid
±10%
120 psi
80°C (175°F)
NPT Female
3/4"
Polypropylene
50 VA SPST
12" (300mm)
2.50 GPM Switch Point
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The FSW-40A and FSW-50-Series flow switches feature 15 A SPDT switches. Their non-magnetic design makes these switches ideal for applications in which rust is a problem.

Product Number Media Type Velocity Range Max Operating Pressure Max Process Temperature Process Connection Type Process Connection Size Wetted Materials Switch Rating and Type Features
FSW-42A
$601.82
Available
in 5 weeks
Liquid
2.0 to 15 FPS
300 psi
82 °C (180 °F)
NPT male
1"
Brass, 316 SS, Phosphor Bronze, EPDM
15 A SPDT
For 3" to 10" Pipe Sizes
FSW-50
$308.20
Available
in 5 weeks
Liquid
3.3 to 11.5 FPS
100 psi
93 °C (200 °F)
NPT male
1 1/4"
316 SS, Polyphenylene Sulfide, FKM
15 A SPDT
For 1" Pipe Sizes
FSW-51
$314.35
1  In Stock
Liquid
2.7 to 10.8 FPS
100 psi
93 °C (200 °F)
NPT male
1 1/4"
316 SS, Polyphenylene Sulfide, FKM
15 A SPDT
For 1¹⁄₂" to 2¹⁄₂" Pipe Sizes
FSW-40A
$569.66
2  In Stock
Liquid
2.0 to 15 FPS
300 psi
82 °C (180 °F)
NPT male
1"
Brass, 316 SS, Phosphor Bronze, EPDM
15 A SPDT
For 1" Pipe Sizes
FSW-41A
$601.82
1  In Stock
Liquid
2.0 to 15 FPS
300 psi
82 °C (180 °F)
NPT male
1"
Brass, 316 SS, Phosphor Bronze, EPDM
15 A SPDT
For 1¹⁄₂" to 2¹⁄₂" Pipe Sizes
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V42DU FLOTECT FLOW SWITCH BRASS, DPDT, UNIVERSAL STOCK VANE, BSPT CONNECTION

Product Number Media Type Flow Range Max Operating Pressure Process Connection Type Process Connection Size Wetted Materials Switch Rating and Type Features Compliance Switch Type Body Material Compatible Media Connection Size
V4-2-U
$633.75
Available
in 9 days
Liquid, Gas
3 to 1200 GPM (11.67 TO 9083 LPM) WATER 17 TO 5500 SCFM (8 TO 4700 LPS) AIR
1000 psig (69 bar)
NPT male
1-1/2"
Brass
10 A SPDT
Field Adjustable Vane
CE, UL, CSA
SPDT
Brass
Liquid, Gas
1-1/2" to 20" (DN 40 to 500) Pipe Size
V4-2-D-U
$697.75
Available
in 9 days
Liquid, Gas
3 to 1200 GPM (11.67 TO 9083 LPM) WATER 17 TO 5500 SCFM (8 TO 4700 LPS) AIR
1000 psig (69 bar)
NPT male
1-1/2"
Brass
10 A SPDT
Field Adjustable Vane
CE, UL, CSA
SPDT
Brass
Liquid, Gas
1-1/2" to 20" (DN 40 to 500) Pipe Size
V4-2-U-AT
$766.75
Available
in 9 days
Liquid, Gas
3 to 1200 GPM (11.67 TO 9083 LPM) WATER 17 TO 5500 SCFM (8 TO 4700 LPS) AIR
1000 psig (69 bar)
NPT male
1-1/2"
Brass
10 A SPDT
Field Adjustable Vane
CE, UL, CSA, FM, ATEX and IECEx
SPDT
Brass
Liquid, Gas
1-1/2" to 20" (DN 40 to 500) Pipe Size
V4-SS-2-U
$898.75
Available
in 9 days
Liquid, Gas
3 to 1200 GPM (11.67 TO 9083 LPM) WATER 17 TO 5500 SCFM (8 TO 4700 LPS) AIR
2000 psig (138 bar)
NPT male
1-1/2"
316SS
10 A SPDT
Field Adjustable Vane
CE, UL, CSA
SPDT
316SS
Liquid, Gas
1-1/2" to 20" (DN 40 to 500) Pipe Size
V4-2-U-BSPT
$688.00
Available
in 9 days
Liquid, Gas
3 to 1200 GPM (11.67 TO 9083 LPM) WATER 17 TO 5500 SCFM (8 TO 4700 LPS) AIR
1000 psig (69 bar)
BSPT male
1-1/2"
Brass
10 A SPDT
Field Adjustable Vane
CE, UL, CSA
SPDT
Brass
Liquid, Gas
1-1/2" to 20" (DN 40 to 500) Pipe Size
  Load More Items from this family (7) ...
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The FSW301 flow switch comprises a paddle system with a permanent magnet attached. This construction allows a useful life of up to 100,000,000 switching cycles.

Product Number Media Type Flow Range Max Operating Pressure Max Process Temperature Process Connection Type Process Connection Size Wetted Materials Switch Rating and Type Features
FSW304
$354.22
Available
in 4 weeks
Liquid
3.5 to 4.4 GPM
362 psi
110 °C (230 °F)
NPT Female
1"
Brass
26 VA SPST
Not Applicable
FSW301
$300.47
Available
in 7 days
Liquid
4 to 132 GPM
365 psi
110 °C (230 °F)
NPT male
1/2"
Brass, SS, Polypropylene, Noryl
26 VA SPST
Not Applicable
FSW302
$354.22
Available
in 5 weeks
Liquid
0.9 to 1.1 GPM
362 psi
110 °C (230 °F)
NPT Female
1/2"
Brass
26 VA SPST
Not Applicable
FSW303
$354.22
Available
in 3 weeks
Liquid
1.8 to 2.4 GPM
362 psi
110 °C (230 °F)
NPT Female
3/4"
Brass
26 VA SPST
Not Applicable
FSW301-G
$215.28
Available
in 11 weeks
Liquid
4 to 132 GPM
365 psi
110 °C (230 °F)
G Thread Male
1/2"
Brass, SS, Polypropylene, Noryl
26 VA SPST
Not Applicable
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The FSW-160 is the newest heavy-duty line of flow switches.The switch is used to signal,start,or stop electronically operated equipment when flow or no-flow conditions occur.

Product Number Media Type Flow Range Accuracy Max Operating Pressure Max Process Temperature Process Connection Type Process Connection Size Wetted Materials Switch Rating and Type Supply Power
FSW-160
$210.13
Available
in 5 weeks
Liquid
4 to 500 GPM
±1%
200 psi
121 °C (250 ˚F)
NPT male
1"
316 SS, 304 SS, Brass, EPDM
15 A SPDT
125 or 250 Vac
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The Series V6 Flotect® Flow Switch is surprisingly compact, and specifically engineered to monitor liquid, gas, or air flows.

Product Number Media Type Max Operating Pressure Process Connection Size Wetted Materials Switch Rating and Type Compliance Switch Type Body Material Compatible Media Connection Size
V6EPB-B-D-LF
$453.50
Available
in 3 weeks
Liquid, Gas
1450 psi (100 bar)
1/2" NPT
Brass, 301 SS, 302 SS, Ceramic
10 A DPDT
CE, UL, CSA
DPDT
Brass
Liquid, Gas
1/2" Pipe Size
V6EPB-B-S-LF
$387.00
Available
in 3 weeks
Liquid, Gas
1450 psi (100 bar)
1/2" NPT
Brass, 301 SS, 302 SS, Ceramic
10 A SPDT
CE, UL, CSA
SPDT
Brass
Liquid, Gas
1/2" Pipe Size
V6EPB-S-D-LF
$253.00
Available
in 8 days
Liquid, Gas
1450 psi (100 bar)
1/2" NPT
303 SS, 301 SS, 302 SS, Ceramic
10 A DPDT
CE, UL, CSA
DPDT
303 SS
Liquid, Gas
1/2" Pipe Size
V6EPB-S-S-LF
$222.50
Available
in 8 days
Liquid, Gas
1450 psi (100 bar)
1/2" NPT
303 SS, 301 SS, 302 SS, Ceramic
10 A SPDT
CE, UL, CSA
SPDT
303 SS
Liquid, Gas
1/2" Pipe Size
V6EPS-S-D-LF
$554.50
Available
in 3 weeks
Liquid, Gas
1450 psi (100 bar)
1/2" NPT
303 SS, 301 SS, 302 SS, Ceramic
10 A DPDT
CE, UL, CSA
DPDT
303 SS
Liquid, Gas
1/2" Pipe Size
  Load More Items from this family (76) ...
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The Series V10 Flotect Mini-Size Flow Switches is designed to provide inexpensive, reliable monitoring of the presence or absence of flow in a system.

Product Number Media Type Max Operating Pressure Process Connection Type Process Connection Size Wetted Materials Switch Rating and Type Features Compliance Switch Type Body Material Compatible Media Connection Size
V10
$123.74
Available
in 2 weeks
Liquid, Gas
1000 psig (69 bar)
NPT
1/2" male NPT
301 SS, Brass, Ceramic 8
1.5 A SPST
Trimmable Vane
CE, UR, CSA
SPST, NO OR NC
Brass
Liquid, Gas
1/2 to 2" Pipe Size
V10SS
$191.36
5  In Stock
Liquid, Gas
2000 psig (138 bar)
NPT
1/2" male NPT
301 SS, 303 SS, Ceramic 8
1.5 A SPST
Trimmable Vane
CE, UR, CSA
SPST, NO OR NC
303 SS
Liquid, Gas
1/2 to 2" Pipe Size
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The FSW-6000/7000-Series are thermal flow switch monitors designed to monitor flow status and also used to detect level of liquids, air and gas with visual indication of flow

Product Number Media Type Velocity Range Accuracy Max Operating Pressure Max Process Temperature Process Connection Type Process Connection Size Wetted Materials Switch Rating and Type Supply Power Features
FSW-6212
$963.93
Available
in 6 weeks
Liquid, Gas
Liquid 0.09 to 9.84 FPS, Gas 0.16 to 49 FPS
±10%
4,351 psi
80 °C (176 °F)
NPT male
3/4"
316 SS
5 A SPDT
85 to 240 Vac
2" Insertion Length
FSW-7111
$963.93
Available
in 6 weeks
Liquid, Gas
Liquid 0.09 to 9.84 FPS, Gas 0.16 to 49 FPS
±10%
4,351 psi
80 °C (176 °F)
NPT male
1/2"
316 SS
5 A SPDT
24 Vdc
1 3/8" Insertion Length
FSW-7112
$797.16
Available
in 6 weeks
Liquid, Gas
Liquid 0.09 to 9.84 FPS, Gas 0.16 to 49 FPS
±10%
4,351 psi
80 °C (176 °F)
NPT male
1/2"
316 SS
5 A SPDT
24 Vdc
2" Insertion Length
FSW-7113
$956.59
Available
in 6 weeks
Liquid, Gas
Liquid 0.09 to 9.84 FPS, Gas 0.16 to 49 FPS
±10%
4,351 psi
80 °C (176 °F)
NPT male
1/2"
316 SS
5 A SPDT
24 Vdc
3" Insertion Length
Product Number Accuracy Wetted Materials Compliance Switch Type Service Pipe Range Repeatability Typical Deadband Temperature Pressure Limits Response Time Power Requirement Switching Current Current Consumption Electrical Connection Process Connection Enclosure Rating Housing Materials Input Power and Protection Switched Output Protection
TDFS2-1-P-06
$325.95
Available
in 3 weeks
125 psig (8.62 bar)
316SS.
CE.
1 NO NPN, 1 NC NPN.
Compatible water-based fluids.
1/2 to 1-1/2" (15 to 40 mm) or 2 to 10" (50 to 250 mm) (model selectable).
0.07 ft/s (0.02 m/s) +3% of setpoint.
0.1 ft/s (0.03 m/s) +15% of setpoint.
Process 5 to 140°F (-15 to 60°C)
300 psig (20.67 bar).
Approx. 8 s.
9 to 24 VDC.
400 mA, de-rate 5 mA/°C above 23°C.
Average 93 mA Peak 300 mA.
1/2' NPT female or cable gland with 4 conductor 22 AWG 6' (1.83 m) long (model selectable).
1/2" NPT or BSPT male (model selectable).
NEMA 4X (IP65).
316 SS, 416 SS, polycarbonate, neoprene, and acrylated urethane.
0.5A fuse (resettable) reverse polarity protected.
0.5A fuse (resettable) reverse polarity protected.
TDFS2-2-C-06
$534.40
Available
in 2 weeks
125 psig (8.62 bar)
316SS.
CE.
1 NO NPN, 1 NC NPN.
Compatible water-based fluids.
1/2 to 1-1/2" (15 to 40 mm) or 2 to 10" (50 to 250 mm) (model selectable).
0.07 ft/s (0.02 m/s) +3% of setpoint.
0.1 ft/s (0.03 m/s) +15% of setpoint.
Process 5 to 140°F (-15 to 60°C)
300 psig (20.67 bar).
Approx. 8 s.
9 to 24 VDC.
400 mA, de-rate 5 mA/°C above 23°C.
Average 93 mA Peak 300 mA.
1/2' NPT female or cable gland with 4 conductor 22 AWG 6' (1.83 m) long (model selectable).
1/2" NPT or BSPT male (model selectable).
NEMA 4X (IP65).
318 SS, 416 SS, polycarbonate, neoprene, and acrylated urethane.
0.5A fuse (resettable) reverse polarity protected.
0.5A fuse (resettable) reverse polarity protected.
TDFS2-1-P-06-BSPT
$288.00
Available
in 3 weeks
125 psig (8.62 bar)
316SS.
CE.
1 NO NPN, 1 NC NPN.
Compatible water-based fluids.
1/2 to 1-1/2" (15 to 40 mm) or 2 to 10" (50 to 250 mm) (model selectable).
0.07 ft/s (0.02 m/s) +3% of setpoint.
0.1 ft/s (0.03 m/s) +15% of setpoint.
Process 5 to 140°F (-15 to 60°C)
300 psig (20.67 bar).
Approx. 8 s.
9 to 24 VDC.
400 mA, de-rate 5 mA/°C above 23°C.
Average 93 mA Peak 300 mA.
1/2' NPT female or cable gland with 4 conductor 22 AWG 6' (1.83 m) long (model selectable).
1/2" NPT or BSPT male (model selectable).
NEMA 4X (IP65).
317 SS, 416 SS, polycarbonate, neoprene, and acrylated urethane.
0.5A fuse (resettable) reverse polarity protected.
0.5A fuse (resettable) reverse polarity protected.
TDFS2-2-P-06-BSPT
$534.40
Available
in 2 weeks
125 psig (8.62 bar)
316SS.
CE.
1 NO NPN, 1 NC NPN.
Compatible water-based fluids.
1/2 to 1-1/2" (15 to 40 mm) or 2 to 10" (50 to 250 mm) (model selectable).
0.07 ft/s (0.02 m/s) +3% of setpoint.
0.1 ft/s (0.03 m/s) +15% of setpoint.
Process 5 to 140°F (-15 to 60°C)
300 psig (20.67 bar).
Approx. 8 s.
9 to 24 VDC.
400 mA, de-rate 5 mA/°C above 23°C.
Average 93 mA Peak 300 mA.
1/2' NPT female or cable gland with 4 conductor 22 AWG 6' (1.83 m) long (model selectable).
1/2" NPT or BSPT male (model selectable).
NEMA 4X (IP65).
319 SS, 416 SS, polycarbonate, neoprene, and acrylated urethane.
0.5A fuse (resettable) reverse polarity protected.
0.5A fuse (resettable) reverse polarity protected.
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This switch package offers a complete solution for flow or no-flow switching in pipes or ducting up to 12'. The compact relay controller actuates valves, pumps, or blowers.

Product Number Media Type Velocity Range Accuracy Max Operating Pressure Max Process Temperature Process Connection Type Process Connection Size Wetted Materials Switch Rating and Type Supply Power Wire Length
FST-211-R
$815.59
Available
in 8 weeks
Liquid
0.04 to 3 FPS
±5%
150 psi
60 °C (140 °F)
NPT male
3/4" to 1 1/2"
PP, PVDF
10 A SPDT
120/240 Vac 50/60 Hz
Not Applicable
FST-221-R
$749.30
Available
in 8 weeks
Liquid
0.04 to 3 FPS
±5%
150 psi
60 °C (140 °F)
NPT male
2" to 12"
PP, PVDF
10 A SPDT
120/240 Vac 50/60 Hz
Not Applicable
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The FLCN-110 offers adjustable time delay relays, invert switch, and LED status enunciators all maximize the flexibility of this powerful controller.

Product Number Connection Size Body Material Switch Type Features
FLCN-111
$319.11
Available
in 8 weeks
3/4
Polypropylene (PP)
SPDT relay, Form C
Standard
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The FSW-9000-Series is a flow switch monitor that measures the velocity of the flow. The-Series provides two output options: a 4 to 20mA analog output and a PNP/NPN output.

Product Number Connection Size Switch Type Compatible Media Features
FSW-91-R
$567.02
Available
in 6 weeks
1/2
Flow Switch
Liquid
24 Vdc
FSCN-91
$742.13
Available
in 6 weeks
Not Applicable
Flow Switch
Liquid
24 Vdc
FSCN-92
$758.80
Available
in 6 weeks
Not Applicable
Flow Switch
Liquid
240 Vac
FSW-9112
$1,066.24
Available
in 6 weeks
1/2
Flow Switch
Liquid
24 Vdc
FSW-9212
$1,059.55
Available
in 6 weeks
3/4
Flow Switch
Liquid
24 Vdc Cable gland
  Load More Items from this family (3) ...
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The FSW-140-Series flow switches offer superior performance. Their fixed set-point make it a dependable switch. This-Series is an ideal choice for coolant applications.

Product Number Media Type Flow Range Accuracy Max Operating Pressure Max Process Temperature Process Connection Type Process Connection Size Wetted Materials Switch Rating and Type Wire Length Features
FSW-141
Not Available
Discontinued
Liquid
0.07 to 2 GPM
±20%
125 psi
100 °C (212 °F)
NPT male
3/8"
316 SS, Polypropylene, Polyphenylene Sulfide, FKM
10 VA SPST
24"
0.07 GPM Switch Point
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The FSW-30A flow switches are supplied with six orifices to provide 6 overlapping flow ranges from 0.12 to 8.0 GPM for water. Wetted Parts: brass, 316 SS, phosphor bronze.

Product Number Media Type Flow Range Max Operating Pressure Max Process Temperature Process Connection Type Process Connection Size Wetted Materials Switch Rating and Type
FSW-30A
$703.89
Available
in 5 weeks
Water
0.12 to 8 GPM
300 psi
82 °C (180 °F)
NPT Female
1/2"
Brass, 316 SS, Phosphor Bronze, EPDM
15 A SPDT
FSW-31A
$577.65
4  In Stock
Water
6 to 70 GPM
300 psi
82 °C (180 °F)
NPT Female
1"
Brass, 316 SS, Phosphor Bronze, EPDM, PVC
15 A SPDT
FSW-32A
$491.34
Available
in 5 weeks
Water
4 to 8 GPM
300 psi
82 °C (180 °F)
NPT Female
1"
Brass, 316 SS, Phosphor Bronze, EPDM, PVC
15 A SPDT

Flow Switches

Flow switches are an essential part of many industrial, commercial, and laboratory applications...
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