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  • AZ13 / AU13 / AV13 Switch Pak Level Controller:
    • AZ13; Vibration
    • AU13; Ultrasonic
    • AV13; Buoyancy
  • Length: 6” to 10’(15cm to 3m)
  • Accuracy: ±1mm in water
  • Orientation: ± 20° vertical
  • Switch points: 1 (factory set)
  • Fail-safe relay control of pumps or valves w/ 0-60 second delay
  • Process temp: -40 to 176°F (-40 to 80°C)
  • Pressure:
    • AV13: 25 psi (1.7 bar)
    • AU13 /AZ13: 150 psi (10 bar)
  • Enclosure rating: NEMA4X (IP65)
  • LED indication: Sensor, power & relay
  • Contact type: (1) SPDT relay
  • Enclosure material:
    • X21X: PP, UL94VO & PC
    • X22X: PP, UL94VO
  • Conduit entrance: 1/2” NPT
  • Process mount 2” NPT or 1 1/2” G
  • Wetted material: PP or PVDF
  • Strobe type option: Xenon tube


The Flowline AZ13 / AU13 / AV13 Switch Pak Level Controller provides reliable, high or low liquid level detection with a 16A compact relay controller for pump or valve control. The optional flash alarm brings attention to alarm conditions. Available in three level sensor technologies, select the sensor type based upon your application media. This polypropylene or PVDF liquid level switch package is broadly applied in \ bulk storage, sump and day tank level applications for high level control or low level control.

Additional features and benefits for the Flowline AZ13 / AU13 / AV13 Switch Pak Level Controller include:

  • Polypropylene or PVDF single-point level switch package for corrosive liquids
  • Fail-safe relay control of pumps or valves with 0-60 second delay
  • Offered in 3 sensing technologies for broad application coverage: ultrasonic, vibration & buoyancy
  • Polypropylene enclosure rated NEMA 4X with swivel base for conduit alignment
  • Optional strobe brings immediate attention to level alarm conditions
  • Invert switch changes relay state from NO to NC without rewiring
  • Mount on the top wall of tank
  • Select length for custom set points
  • Relay output interfaces directly with valve, buzzer, alarm, etc.
  • Ideal for high level overflow protection or low level pump protection
  • Add strobe for visual alarm