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