Flow Switches - Dwyer

Flow switches are vital instruments in fluid systems that detect the presence or absence of flow. These devices ensure proper operation and prevent issues such as pump damage or system failure. Flow switches are employed in various industries to monitor and control the flow of liquids or gases, providing a reliable means of safeguarding equipment and optimizing fluid processes.

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The Dwyer - FST-211-R is a Flow Switch with Compact Relay Controller featuring Liquid, 0.04 FPS to 3 FPS, 10 A SPDT, 3/4 " to 1-1/2 ", NPT Male, ± 5 % Accuracy, PP, and PVDF. Part of the FST200R Series. Sold individually.

$1,012.73

Should ship between 04 Dec and 11 Dec

Subject to factory lead times

The Dwyer - FS-100-500 is a Flow Switch for Threaded Plastic Piping featuring Liquid, 5 GPM Switch Point, 50 VA SPST, 3/4 ", NPT Female, ± 10 % Accuracy, PP, and 12 " (300mm) Wire L. Part of the FS-100 Series. Sold individually.

$115.18

Should ship between 13 Nov and 20 Nov

Subject to factory lead times

The Dwyer - FST-221-R is a Flow Switch with Compact Relay Controller featuring Liquid, 0.04 FPS to 3 FPS, 10 A SPDT, 2 " to 12 ", NPT Male, ± 5 % Accuracy, PP, and PVDF. Part of the FST200R Series. Sold individually.

$933.78

Should ship between 04 Dec and 11 Dec

Subject to factory lead times

The Dwyer - FSW-31A is a Flow Switch featuring Non-Magnetic, Industrial, Water, 6 GPM to 70 GPM, 15 A SPDT, 1 ", NPT Female, Brass, 316 SS, Phosphor Bronze, EPDM, and PVC. Part of the FSW30 Series. Sold individually.

$701.57

Should ship between 13 Nov and 20 Nov

Subject to factory lead times

The Dwyer - FSW-50 is a Flow Switch for 1 " Pipe featuring Industrial, Liquid, 3.3 FPS to 11.5 FPS, 15 A SPDT, 1-1/4 ", NPT Male, 316 SS, Polyphenylene Sulfide, and FKM. Part of the FSW-50 Series. Sold individually.

$381.61

Should ship between 13 Nov and 20 Nov

Subject to factory lead times

The Dwyer - FSW-9112 is a Flow Transmitter featuring Liquid, 24 Vdc, 1/2 " NPT, Glass Filled Nylon with 1/2 " NPT Conduit, Cable Gland & 2 M (6.5 ') Cable, and 50 mm (2 "). Part of the FSW-9000 Series. Sold individually.

$1,294.98

Should ship between 27 Nov and 04 Dec

Subject to factory lead times

The Dwyer - FLCN-101 is a Sensor Controller featuring Single, Flow Alert, 3/4 " NPT, SPDT, PP (PP) Body, Calls Immediate Attention to Alarm Conditions, and Adjustable Time Delay Relay. Sold individually.

$494.16

Should ship between 04 Dec and 11 Dec

Subject to factory lead times

The Dwyer - FST-323-SPST is a Flow Switch featuring Thermal Dispersion, Gas, 1 FPS to 90 FPS, 1 A SPST Relay, N.O/N.C, Selectable, 2 " to 12 ", NPT Male, ± 5 % Accuracy, PP, PVDF, and 10 ' Wire L. Part of the FST-320 Series. Sold individually.

$376.63

Should ship between 04 Dec and 11 Dec

Subject to factory lead times

The Dwyer - FST1002R is a Flow Switch featuring Economical, Air, 0 FPM to 10000 FPM, 2 SPST N.O Relays, 1/4 ", Compression Fitting, ± 2 % Accuracy, 304 SS, 12 " Wire L, and Remote Probe. Part of the FST1000 Series. Sold individually.

$543.61$589.62

You save 8%
Should ship between 13 Nov and 20 Nov

Subject to factory lead times

The Dwyer - FSW-32A is a Flow Switch featuring Non-Magnetic, Industrial, Water, 4 GPM to 8 GPM, 15 A SPDT, 1 ", NPT Female, Brass, 316 SS, Phosphor Bronze, EPDM, and PVC. Part of the FSW30 Series. Sold individually.

$596.75

Should ship between 13 Nov and 20 Nov

Subject to factory lead times

The Dwyer - FSW-51 is a Flow Switch for 1-1/2 " to 2-1/2 " Pipe featuring Industrial, Liquid, 2.7 FPS to 10.8 FPS, 15 A SPDT, 1-1/4 ", NPT Male, 316 SS, Polyphenylene Sulfide, and FKM. Part of the FSW-50 Series. Sold individually.

$389.23

Should ship between 13 Nov and 20 Nov

Subject to factory lead times

The Dwyer - FSW-7111 is a Flow Switch featuring Thermal Dispersion, Liquid 0.09 FPS to 9.84 FPS, Gas 0.16 FPS to 49 FPS, 5 A SPDT, 1/2 ", NPT Male, ± 10 % Accuracy, 316 SS, and 1-3/8 " Insertion L. Part of the FSW-7000 Series. Sold individually.

$1,174.92

Should ship between 27 Nov and 04 Dec

Subject to factory lead times

The Dwyer - FSW-7112 is a Flow Switch featuring Thermal Dispersion, Liquid 0.09 FPS to 9.84 FPS, Gas 0.16 FPS to 49 FPS, 5 A SPDT, 1/2 ", NPT Male, ± 10 % Accuracy, 316 SS, and 2 " Insertion L. Part of the FSW-7000 Series. Sold individually.

$975.13

Should ship between 27 Nov and 04 Dec

Subject to factory lead times

The Dwyer - FSW-7113 is a Flow Switch featuring Thermal Dispersion, Liquid 0.09 FPS to 9.84 FPS, Gas 0.16 FPS to 49 FPS, 5 A SPDT, 1/2 ", NPT Male, ± 10 % Accuracy, 316 SS, and 3 " Insertion L. Part of the FSW-7000 Series. Sold individually.

$1,161.80

Should ship between 27 Nov and 04 Dec

Subject to factory lead times

The Dwyer - FSW-9512 is a Flow Transmitter featuring Liquid, 24 Vdc, 1.5 " Tri-Grip, Glass Filled Nylon with 1/2 " NPT Conduit, Cable Gland & 2 M (6.5 ') Cable, and 50 mm (2 "). Part of the FSW-9000 Series. Sold individually.

$1,605.51

Should ship between 27 Nov and 04 Dec

Subject to factory lead times

Adjustable flow switch for gases, 1/2" NPT conduit connection, 316SS piston, 316SS housing.

$2,006.25

Should ship between 13 Nov and 27 Nov

Subject to factory lead times

Adjustable flow switch for gases, 1/2" NPT conduit connection, brass piston, brass housing.

$1,326.20

Should ship between 13 Nov and 27 Nov

Subject to factory lead times

Adjustable flow switch for liquids, 1/2" NPT conduit connection, 316SS piston, 316SS housing.

$2,006.25

Should ship between 13 Nov and 27 Nov

Subject to factory lead times

Adjustable flow switch for liquids, 18 AWG, 24" polymeric lead wires, 316SS piston, 316SS housing.

$1,907.95

Should ship between 13 Nov and 27 Nov

Subject to factory lead times

Adjustable flow switch for oil, 18 AWG, 24" polymeric lead wires, brass piston, brass housing.

$1,253.20

Should ship between 13 Nov and 27 Nov

Subject to factory lead times

Adjustable flow switch for water, 18 AWG, 24" polymeric lead wires, polysulfone piston, brass housing.

$1,003.85

Should ship between 13 Nov and 27 Nov

Subject to factory lead times

Air flow switch.
Requires Quote
Should ship between 13 Nov and 27 Nov

Subject to factory lead times

Brass flow switch, actuation set point 0.50 GPM (1.89 LPM), calibrated for water @ standard conditions.

$408.60

Should ship between 13 Nov and 27 Nov

Subject to factory lead times

Flotect® vane operated flow switch, weatherproof, brass body, 1" NPT, trimmable vane.

$128.79$154.55

You save 17%
Should ship between 13 Nov and 27 Nov

Subject to factory lead times

The Dwyer - FST-211-R is a Flow Switch with Compact Relay Controller featuring Liquid, 0.04 FPS to 3 FPS, 10 A SPDT, 3/4 " to 1-1/2 ", NPT Male, ± 5 % Accuracy, PP, and PVDF. Part of the FST200R Series. Sold individually.

$1,012.73

Should ship between 04 Dec and 11 Dec

Subject to factory lead times

The Dwyer - FS-100-500 is a Flow Switch for Threaded Plastic Piping featuring Liquid, 5 GPM Switch Point, 50 VA SPST, 3/4 ", NPT Female, ± 10 % Accuracy, PP, and 12 " (300mm) Wire L. Part of the FS-100 Series. Sold individually.

$115.18

Should ship between 13 Nov and 20 Nov

Subject to factory lead times

The Dwyer - FST-221-R is a Flow Switch with Compact Relay Controller featuring Liquid, 0.04 FPS to 3 FPS, 10 A SPDT, 2 " to 12 ", NPT Male, ± 5 % Accuracy, PP, and PVDF. Part of the FST200R Series. Sold individually.

$933.78

Should ship between 04 Dec and 11 Dec

Subject to factory lead times

The Dwyer - FSW-31A is a Flow Switch featuring Non-Magnetic, Industrial, Water, 6 GPM to 70 GPM, 15 A SPDT, 1 ", NPT Female, Brass, 316 SS, Phosphor Bronze, EPDM, and PVC. Part of the FSW30 Series. Sold individually.

$701.57

Should ship between 13 Nov and 20 Nov

Subject to factory lead times

The Dwyer - FSW-50 is a Flow Switch for 1 " Pipe featuring Industrial, Liquid, 3.3 FPS to 11.5 FPS, 15 A SPDT, 1-1/4 ", NPT Male, 316 SS, Polyphenylene Sulfide, and FKM. Part of the FSW-50 Series. Sold individually.

$381.61

Should ship between 13 Nov and 20 Nov

Subject to factory lead times

The Dwyer - FSW-9112 is a Flow Transmitter featuring Liquid, 24 Vdc, 1/2 " NPT, Glass Filled Nylon with 1/2 " NPT Conduit, Cable Gland & 2 M (6.5 ') Cable, and 50 mm (2 "). Part of the FSW-9000 Series. Sold individually.

$1,294.98

Should ship between 27 Nov and 04 Dec

Subject to factory lead times

The Dwyer - FLCN-101 is a Sensor Controller featuring Single, Flow Alert, 3/4 " NPT, SPDT, PP (PP) Body, Calls Immediate Attention to Alarm Conditions, and Adjustable Time Delay Relay. Sold individually.

$494.16

Should ship between 04 Dec and 11 Dec

Subject to factory lead times

The Dwyer - FST-323-SPST is a Flow Switch featuring Thermal Dispersion, Gas, 1 FPS to 90 FPS, 1 A SPST Relay, N.O/N.C, Selectable, 2 " to 12 ", NPT Male, ± 5 % Accuracy, PP, PVDF, and 10 ' Wire L. Part of the FST-320 Series. Sold individually.

$376.63

Should ship between 04 Dec and 11 Dec

Subject to factory lead times

The Dwyer - FST1002R is a Flow Switch featuring Economical, Air, 0 FPM to 10000 FPM, 2 SPST N.O Relays, 1/4 ", Compression Fitting, ± 2 % Accuracy, 304 SS, 12 " Wire L, and Remote Probe. Part of the FST1000 Series. Sold individually.

$543.61$589.62

You save 8%
Should ship between 13 Nov and 20 Nov

Subject to factory lead times

The Dwyer - FSW-32A is a Flow Switch featuring Non-Magnetic, Industrial, Water, 4 GPM to 8 GPM, 15 A SPDT, 1 ", NPT Female, Brass, 316 SS, Phosphor Bronze, EPDM, and PVC. Part of the FSW30 Series. Sold individually.

$596.75

Should ship between 13 Nov and 20 Nov

Subject to factory lead times

The Dwyer - FSW-51 is a Flow Switch for 1-1/2 " to 2-1/2 " Pipe featuring Industrial, Liquid, 2.7 FPS to 10.8 FPS, 15 A SPDT, 1-1/4 ", NPT Male, 316 SS, Polyphenylene Sulfide, and FKM. Part of the FSW-50 Series. Sold individually.

$389.23

Should ship between 13 Nov and 20 Nov

Subject to factory lead times

The Dwyer - FSW-7111 is a Flow Switch featuring Thermal Dispersion, Liquid 0.09 FPS to 9.84 FPS, Gas 0.16 FPS to 49 FPS, 5 A SPDT, 1/2 ", NPT Male, ± 10 % Accuracy, 316 SS, and 1-3/8 " Insertion L. Part of the FSW-7000 Series. Sold individually.

$1,174.92

Should ship between 27 Nov and 04 Dec

Subject to factory lead times

The Dwyer - FSW-7112 is a Flow Switch featuring Thermal Dispersion, Liquid 0.09 FPS to 9.84 FPS, Gas 0.16 FPS to 49 FPS, 5 A SPDT, 1/2 ", NPT Male, ± 10 % Accuracy, 316 SS, and 2 " Insertion L. Part of the FSW-7000 Series. Sold individually.

$975.13

Should ship between 27 Nov and 04 Dec

Subject to factory lead times

The Dwyer - FSW-7113 is a Flow Switch featuring Thermal Dispersion, Liquid 0.09 FPS to 9.84 FPS, Gas 0.16 FPS to 49 FPS, 5 A SPDT, 1/2 ", NPT Male, ± 10 % Accuracy, 316 SS, and 3 " Insertion L. Part of the FSW-7000 Series. Sold individually.

$1,161.80

Should ship between 27 Nov and 04 Dec

Subject to factory lead times

The Dwyer - FSW-9512 is a Flow Transmitter featuring Liquid, 24 Vdc, 1.5 " Tri-Grip, Glass Filled Nylon with 1/2 " NPT Conduit, Cable Gland & 2 M (6.5 ') Cable, and 50 mm (2 "). Part of the FSW-9000 Series. Sold individually.

$1,605.51

Should ship between 27 Nov and 04 Dec

Subject to factory lead times

Adjustable flow switch for gases, 1/2" NPT conduit connection, 316SS piston, 316SS housing.

$2,006.25

Should ship between 13 Nov and 27 Nov

Subject to factory lead times

Adjustable flow switch for gases, 1/2" NPT conduit connection, brass piston, brass housing.

$1,326.20

Should ship between 13 Nov and 27 Nov

Subject to factory lead times

Adjustable flow switch for liquids, 1/2" NPT conduit connection, 316SS piston, 316SS housing.

$2,006.25

Should ship between 13 Nov and 27 Nov

Subject to factory lead times

Adjustable flow switch for liquids, 18 AWG, 24" polymeric lead wires, 316SS piston, 316SS housing.

$1,907.95

Should ship between 13 Nov and 27 Nov

Subject to factory lead times

Adjustable flow switch for oil, 18 AWG, 24" polymeric lead wires, brass piston, brass housing.

$1,253.20

Should ship between 13 Nov and 27 Nov

Subject to factory lead times

Adjustable flow switch for water, 18 AWG, 24" polymeric lead wires, polysulfone piston, brass housing.

$1,003.85

Should ship between 13 Nov and 27 Nov

Subject to factory lead times

Air flow switch.
Requires Quote
Should ship between 13 Nov and 27 Nov

Subject to factory lead times

Brass flow switch, actuation set point 0.50 GPM (1.89 LPM), calibrated for water @ standard conditions.

$408.60

Should ship between 13 Nov and 27 Nov

Subject to factory lead times

Flotect® vane operated flow switch, weatherproof, brass body, 1" NPT, trimmable vane.

$128.79$154.55

You save 17%
Should ship between 13 Nov and 27 Nov

Subject to factory lead times