Dwyer L8 series

The L8 Flotect® Liquid Level Control is UL recognized as an industrial motor controller per UL standard 508, suitable for mounting in a protected environment. This lightweight switch can be used in numerous chemical processes, industrial systems and similar applications where process conditions are compatible with polyphenylene sulfide, ceramic 8 and 316 stainless steel. This liquid level switch provides accurate setpoint control of liquids with specific gravities as low as 0.6. This compact and reliable control is designed to handle temperatures up to 212°F (100°C) and pressures to 150 psig (10 bar).

• Environmental Control

• Waste Water

• Scrubber Systems

• Holding Tanks

• Cooling Towers

• Chemical/Petroleum Processing

• Plating and Washing Tanks

• Sewage Treatment

• Car Washes

• Remediation Systems

• Thermal Storage Systems

• HVAC and Building Automation Systems



  • Service: Compatible liquids.
  • Wetted Materials: Float and Body: Polyphenylene Sulfide (PPS); Pin and Spring: 316 SS or Inconel® Alloy; Magnet: Ceramic 8.
  • Temperature Limit: 212°F (100°C).
  • Pressure Limit: 150 psig (10.34 bar).
  • Enclosure Rating: General purpose. WP/WP2 options are weatherproof.
  • Switch Type: SPDT snap switch. MV option is a SPDT gold contact snap switch.
  • Electrical Ratings: 5A @ 125/250 VAC, 5A resistive, 3A inductive @ 30 VDC. MV option: 1A @ 125 VAC, 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: Horizontal with index arrow pointing down.
  • Weight: 5 oz (142 g).
  • Agency Approvals: CE, UL 508 for US and Canada.
  • Specific Gravity: 0.6 minimum.