Dwyer Series V8

The V8 Flotect® Flow Switch has a leak proof body and vane constructed of tough durable polyphenylene sulfide which has excellent chemical resistance. The full size trimmable vane is provided with molded-in graduations allowing for installation in a 1 inch through 6 inch pipe. Operating pressures are up to 150 psig (10 bar) and temperatures to 212°F (100°C). The V8 flow switch can be used in various chemical processes, industrial systems and similar applications where process conditions are compatible with polyphenylene sulfide, ceramic 8 and 316SS. The V8 Flotect® flow switch is UL recognized as an industrial motor controller per UL standard 508, suitable for mounting in a protected environment.

Features & Benefits

  • Chemical processing
  • Air conditioning
  • Refrigerations
  • Heating systems
  • Cooling lines
  • Machinery
  • Liquid transfer systems
  • Water treatment
  • Food processing
  • Machine tools


Service: Compatible gases or liquids.

Wetted Materials: Vane and Body: Polyphenylene Sulfide (PPS); Pin and Spring: 316 SS on Inconel; Magnet: Ceramic 8.

Temperature Limit: 212°F (100°C).

Pressure Limit: 150 psig (10 bar).

Enclosure Rating: General purpose; WP and WP2 options are weatherproof.

Switch Type: SPDT snap switch; MV option: SPDT gold contact snap switch.

Electrical Rating: 5A @ 125/250 VAC, 5A resistive, 3A inductive @ 30 VDC. MV option: 1A @ 125VAC, 1A resistive, 0.5A inductive @ 30 VDC.

Electrical Connections: 18 AWG 18″ (460 mm) long.

Conduit Connection: 1/2″ male NPT, 1/2″ female NPT on WP and WP2.

Process Connection: 1″ male NPT.

Mounting Orientation: Actuation/deactuation flow rates are based on horizontal pipe run and are nominal values. Unit cannot be used with vertical down flow.

Set Point Adjustment: Vane is trimmable.

Weight: 4.5 oz (0.13 kg).

Agency Approvals: CE, UL 508 for US and Canada.