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Flow Switch
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The Compact Flotect® Flow Switch is a weatherproof, NEMA 4 device designed for 1/2 to 2-inch pipes, ensuring reliable flow monitoring for liquids, gases, and air.
Product Number | Pipe Size, Max | Proof Pressure | Sensor Material | Switch Type | Tee Material |
---|---|---|---|---|---|
|
0.5 in
|
Up to 250 psi
|
Stainless Steel, Brass, Ceramic
|
DPDT Snap
|
Brass
|
|
0.5 in
|
Up to 1450 psi
|
Brass, Ceramic, Nitrile Rubber
|
SPDT Snap
|
Brass
|
|
0.75 in
|
Up to 250 psi
|
Stainless Steel, Brass, Ceramic
|
DPDT Snap
|
Brass
|
|
1 in
|
Up to 250 psi
|
Stainless Steel, Brass, Ceramic
|
DPDT Snap
|
Brass
|
|
1.25 in
|
Up to 250 psi
|
Stainless Steel, Brass, Ceramic
|
DPDT Snap
|
Brass
|

The Flotect® Flow Switches provide reliable low flow protection in weatherproof and explosion-proof designs. Ideal for safeguarding pumps and systems in demanding environments.
Product Number | Sensor Material | Switch Type |
---|---|---|
|
316 Stainless Steel, 430 Stainless Steel
|
SPDT Snap
|
|
Stainless Steel, Brass
|
SPDT Snap
|
|
Stainless Steel, Brass
|
DPDT Snap
|
|
Stainless Steel
|
DPDT Snap
|

The Series V10 Mini Flow Switches monitor flow in 1/2 to 2-inch pipelines. Available in brass or stainless steel, they ensure reliable performance for various applications.

The Series TDFS2 Thermal Dispersion Flow Switch features adjustable flow rates and LED indicators for easy monitoring. Ideal for boilers, chillers, and liquid transfer systems.
Product Number | Pipe Size, Max | Process Connection Type |
---|---|---|
|
1.5 in
|
NPT Male
|
|
10 in
|
NPT Male
|
|
10 in
|
BSPT Male
|

The Vane Flow Switch is designed for 1-6 inch pipes, ideal for chemical and HVAC applications. It ensures equipment protection with excellent durability and chemical resistance.
Product Number | Electrical Connection | Enclosure Type | Switch Type |
---|---|---|---|
|
1/2 in NPT male Conduit with Wire Leads
|
General Purpose
|
SPDT NO/NC, Selectable
|
|
1/2 in NPT male Conduit with Wire Leads
|
Weatherproof
|
SPDT NO/NC, Selectable
|

The Flotect® Flow Switch for Liquids is a reliable NEMA 4X device designed for boilers and pumps, ensuring safe operation by detecting flow conditions in various applications.
Product Number | Process Connection Type |
---|---|
|
NPT Male
|

The Series FS-2 Vane Flow Switch is designed for boilers and heaters, adjustable for 1-8" pipes. Ideal for flow proving in various applications, featuring durable aluminum housing.
Product Number | Electrical Connection | Lead Length | Process Connection Type |
---|---|---|---|
|
N/A
|
0 m
|
BSPT Male
|
|
N/A
|
0 m
|
NPT Male
|
|
Cable Gland with Cable
|
0 m
|
NPT Male
|
|
1 in NPT female Conduit with Screw Terminal block
|
0 m
|
NPT Male
|
|
N/A
|
2 m
|
BSPT Male
|

The TDS Thermal Flow Switch detects non-coating liquids, featuring adjustable SPDT output and LED indicators for flow status. Ideal for pump and process protection.
Product Number | Pipe Size, Max | Sensor Material |
---|---|---|
|
1.5 in
|
Polypropylene, Polyphenylene Sulfide
|
|
16 in
|
Polypropylene, Polyphenylene Sulfide
|
|
1.5 in
|
Polyvinylidene Fluoride
|
|
16 in
|
Polyvinylidene Fluoride
|

The Series P3 Polypropylene Flow Switches offer versatile inlet options for water and cooling systems. Ideal for pure water equipment and heat exchangers.
Product Number | Actuation Set Point, Max | Port 2 Type |
---|---|---|
|
0.25 GPM
|
NPT Male
|
|
0.5 GPM
|
NPT Male
|
|
1 GPM
|
NPT Male
|
|
1.5 GPM
|
NPT Male
|
|
2 GPM
|
NPT Male
|

The AFG Flow Grid is an easy-to-install duct-mounted pressure sensor for air and gas flow. Suitable for ducts up to 60", it offers reliable monitoring and control.

The P2 Flow Switch features a compact piston design for air and pure water applications, with FDA compliant materials, ideal for monitoring filter life and cooling systems.
Product Number | Actuation Set Point, Max |
---|---|
|
0.05 GPM
|
|
0.25 GPM
|
|
0.5 GPM
|
|
1 GPM
|
|
0.42 CFM
|

Flowmeter with Flow Limit Switch offers visual flow rate indication and an adjustable flow alarm. Good for chemical processing, pump testing, process control, and drain lines.
Product Number | Flow Rate, Max | Weight |
---|---|---|
|
4 GPM
|
0.55 lb
|
|
16 GPM
|
0.55 lb
|
|
28 GPM
|
0.55 lb
|
|
4 GPM
|
0.9 lb
|
|
7 GPM
|
1.9 lb
|

The Series GVS Globe Valve Flow Switches ensure precise flow detection for liquids with 1% repeatability and adjustable settings, ideal for lubrication and cooling applications.

The Brass High Pressure Flow Switches are designed for industrial use, managing liquid flow from 0.25 to 2.0 GPM. Ideal for cleaning and lubrication systems.
Product Number | Actuation Set Point, Max |
---|---|
|
0.25 GPM
|
|
0.5 GPM
|
|
1 GPM
|
|
1.5 GPM
|
|
2 GPM
|

The Globe Flow Switch ensures precise flow detection in water and oil, featuring easy adjustments and durable, non-corrosive materials for reliable performance.

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 | Cable Length | Enclosure Material | Pipe Size, Max |
---|---|---|---|
|
10 ft
|
Polypropylene, PVDF
|
1.5 in
|
|
10 ft
|
PVDF
|
1.5 in
|
|
10 ft
|
Polypropylene, PVDF
|
12 in
|
|
10 ft
|
PVDF
|
12 in
|
|
25 ft
|
Polypropylene, PVDF
|
1.5 in
|

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 | Volumetric Flow Rate, Max | Volumetric Flow Rate, Min |
---|---|---|
|
0 GPM
|
0 GPM
|

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 | Linear Flow Rate, Max | Linear Flow Rate, Min | Material Construction Option | Pipe Size, Max | Pipe Size, Min |
---|---|---|---|---|---|
|
15 ft/s
|
2 ft/s
|
Standard
|
10 in
|
3 in
|
|
11.5 ft/s
|
3.3 ft/s
|
Standard
|
1 in
|
0 in
|
|
10.8 ft/s
|
2.7 ft/s
|
Standard
|
2.5 in
|
1.5 in
|
|
15 ft/s
|
2 ft/s
|
Standard
|
1 in
|
0 in
|
|
15 ft/s
|
2 ft/s
|
Standard
|
2.5 in
|
1.5 in
|

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 | Volumetric Flow Rate, Max | Volumetric Flow Rate, Min |
---|---|---|
|
8 GPM
|
4 GPM
|

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 | Volumetric Flow Rate, Max |
---|---|
|
0.25 GPM
|
|
0.5 GPM
|
|
1 GPM
|
|
2 GPM
|
|
2.5 GPM
|
Flow Switch
Flow switches are vital for industrial, commercial, and lab applications. DwyerOmega provides d...
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