Series V7 Flotect Vane Operated Flow Switch

Brand: Dwyer Instruments, LLC

The Series V7 Flotect® Flow Switch is an inexpensive range switch for use with compatible liquids to start or stop electronic operated equipment when flow or no-flow conditions occur.

Design is standard weatherproof, meeting NEMA 4X.
  • Magnetically actuated switching design gives superior performance
  • A free-swinging vane which attracts a magnet within the solid metal switch body, actuating a snap switch by means of a simple lever arm with no bellows, springs, or seals to fail
  • Lower body is machined solid metal bar stock assuring no leak points, no matter how long the unit is in service
  • Robust vane design is rigid and field trimmable for set point adjustment


Approvals & Certifications

  • CE
  • UL

Conduit Connection

  • 1/2” NPSM

Electrical Connectors

  • 3 Screw Typical - Normally Open & Normally Closed

Electrical Rating

  • 1/4 hp at 250 Vac
  • 1/8 hp at 125 Vac
  • 10 A at 125/250/480 Vac

Enclosure, Body Material

  • 316 Stainless Steel
  • Brass
  • Die Cast Aluminum

Environmental Protection

  • IP66
  • NEMA 4X
  • Weatherproof

Flow Rate

  • 6.8 to 58.0 gpm (25.7 to 218 LPM)

Materials of Construction

  • 301 Stainless Steel
  • 302 Stainless Steel


  • Liquids Compatible with Wetted Materials

NPT Connection

  • 1” NPT Male

Pipe Size

  • 1” to 4”

Sensor Orientation

  • Horizontal
  • Vertical

Supply Pressure

  • psi: 250 (kPa: 1,724, bar: 17.24)

Switch Type

  • SPDT Snap Switch

Temperature Range

  • -40° to 121° C (-40° to 250° F)

Wetted Materials

  • 301 Stainless Steel
  • Ceramic

  • Proof of boiler flow
  • Shuts down burner when air flow through heating coil fails
  • Protects pumps, motors and other equipment against low or no flow
  • Stops liquid cooled engines, machines and processing when coolant flow is interrupted
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