Dwyer Series V7 Flotect® Vane Operated Flow Switch

The Dwyer 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.

Product Applications

  • Proof of boiler flow
  • Shuts down burner when airflow 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

Service : Liquids compatible with wetted materials that are non-coating and noncrystallizing.

Wetted Materials : Vane: 301 SS, Process connection: Brass or 316 SS, Magnet: Ceramic, Other: 301, 302 SS.

Upper Body Material : Die cast aluminum.

Temperature Limits : -40 to 250°F (-40 to 121°C).

Pressure Limits : 250 psi (17.2 bar).

Enclosure Rating : Weatherproof, meets NEMA 4X (IP66).

Switch Type : SPDT snap switch.

Electrical Rating : 10 A @ 125, 250, 480 VAC; 1/8 hp @ 125 VAC, 1/4 hp @ 250 VAC.

Electrical Connections : 3 screw type, common, normally open and normally closed.

Conduit Connection : 1/2″ NPSM.

Process Connection : 1″ male NPT. Contact factory for optional tees.Pipe Size:1″ to 4″.

Mounting Orientation : Horizontal or vertical (actuation flow rates are based on horizontal pipe runs in the vertical position). Will not work in vertical pipe with down flow.

Set Point Adjustment : Vane is trimmable, see set point chart on Catalog page.

Weight : 1 lb 2 oz (500 g).

Agency Approvals : CE, UL.

  • Magnetically actuated switching design gives superior performance
  • Features 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

Manuals: V7 Manual
Catalog Pages: Series V7 Catalog Page

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