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Rule Automatic 3700 Bilge Pump

Product Description

These high capacity bilge pumps feature very heavy duty construction for both commercial and pleasure boat use. They are known for their trouble-free operation and reliability.

"Automatic" models pump when water is sensed in the bilge, and do not require a separate float switch.



  • This pump has a 1-1/2" discharge outlet.
  • Fully automated bilge pump with computerized operation.
  • High capacity pump for larger vessels.
  • Quick release inlet strainer allows rapid cleaning.
  • Motor rated for 2500-hour life.
  • Ignition protected.
  • No need for a separate float switch.
  • Third wire for manual override or warning light.


  • Output: Up to 220 litres/minute (48 gallons/minute). Max. recommended discharge head 4m.
  • Type: 3700 GPH Automatic Bilge Pump
  • Fuse Size: 25 amp
  • Connections: For 38mm (1.5") bore hose.
  • Discharge Port:1-1/2"
  • Voltage:12V
  • Weight:5.5 lb
  • Dimensions:8-1/4"H x 4-7/8" Dia.
  • Capacity:3700 gph
  • Current Draw:15.5A
  • Sensing Current Draw:0.76 Ah per Day
  • Model:55S


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