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Flow Switches

Flow Switches
Johnson Controls
F61
(Standard Flow Rate – SPDT)

The F61 Series Flow Switches are Single-Pole, Double-Throw (SPDT) flow switches used on fluid lines carrying water, ethylene glycol, or other fluids not classified as hazardous. They can be wired to energize one device and deenergize another device powered from the same source when fluid flow either exceeds or drops below the set flow rate....

Johnson Controls
F62 Series
(SPDT – Contact Unit)

This control detects air flow or the absence of air flow in ducts, responding only to the velocity of air movement. The one-piece stainless steel paddle can be trimmed, if necessary. The control is supplied with mounting plate gasket. The range adjusting screw permits field adjustment of flow rate setting.

Flowline
FT10 Series

The general purpose liquid flow switch is an ideal choice for a wide range of relatively clean water and chemical solutions with non-coating and/or crystallizing characteristics. Media examples include deionized water and sulfuric acid. The 1A relay provides a reliable switch interface with remote devices such as a PLC, SCADA or alarm. The...

Flowline
GT10 Series

The general purpose gas flow switch is a great choice for a broad range of relatively clean gases with non-coating characteristics. Media examples include nitrogen and scrubber exhaust fumes. The 1A relay provides a reliable switch interface with remote devices such as a PLC, SCADA or alarm. The short sensor is intended for use in pipe or...

McDonnell Miller
Model FS1-W

• For applications requiring a water-tight, dust-tight, or a NEMA 4X rated flow switch

McDonnell Miller
Model FS6-W

• For applications requiring a water-tight, dust-tight, or a NEMA 4X rated flow switch

Dwyer
Series FMS
For Water and Water Based Liquids/Oil and Oil-Based Liquids

Series FMS Flow Sensor FMS-1 is for applications requiring RELATIVE measurement and set-point of flow rate. This means that the actual velocity of the flow or the quantitative measurement in GPM is not known and is not important. What is important is that the set-point can be set as a “percentage of” or “relative to” the...

McDonnell Miller
Series FS1

• For general purpose applications where high sensitivity is required and moderate or low flow rates are encountered such air conditioning, heating and hydronic systems, water, fuel oil, some viscous liquids and oils in process work 
• In-line configuration eliminates need for a pipe tee

McDonnell Miller
Series FS4-3

• Universal design serves the widest variety of applications
• For starting or stopping electrically operated equipment such as signal lights, alarms, motors, automatic burners, metering devices and others
• Replacement for common flow switches from Johnson/Penn, Potter/Taco, Watts, Hydrolevel and other manufacturers

McDonnell Miller
Series FS4-3T

• For starting or stopping electrically operated equipment such as signal lights, alarms, motors, automatic burners, metering devices and others
• In-line configuration eliminates need for a pipe tee

McDonnell Miller
Series FS5

• For general purpose applications requiring low flow rate sensitivity
• In-line configuration eliminates need for a pipe tee 

McDonnell Miller
Series FS7-4

• Universal design serves the widest variety of large pipe applications, including heating and hydronic systems, air conditioning, refrigeration and process work

McDonnell Miller
Series FS7-4E

• For hazardous environment applications requiring a NEMA 7 (Class I, Group C or D) or NEMA 9 Class II, Group E, F, or G) rated flow switch

McDonnell Miller
Series FS7-4W

• For applications requiring a water-tight, dust-tight or a NEMA 4X rated flow switch 

Dwyer
Series FTS
For Industrial Cooling Systems

Series FTS Thermal Flow Switch is especially designed, for all types of cooling systems, as a reliable alternative to failure prone mechanical flow switches.

The Thermal Flow Switch continually samples the temperature of the coolant and adjusts the low flow setpoint automatically, providing a solid state switch should the coolant...

Dwyer
Series V4
Field Adjustable – Dependable Protection Against Flow Variation or Stopping in Pipelines for Fluids,

Rugged and reliable the Series V4 Flotect® flow switch operates automatically to protect equipment and pipeline systems against damage from reduction or loss of flow. The V4 is time tested being installed in thousands of pipelines and processing plants around the world. A unique magnetically actuated switching design gives superior...

Dwyer
Series V6
Monitor flow in ½? to 2? pipe, Explosion-proof

Surprisingly compact, the Series V6 Flotect® Flow Switch is engineered to specifically monitor liquid, gas, or airflows. Operation is simple and dependable with no mechanical linkage as the flow switch is magnetically actuated. The lower body holds the flow vane and one magnet, which controls the switch actuating magnet in the separate...