24V 500GPH BILGE PUMP
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500 GPH Bilge Pump - 24V Non-Automatic Model

Rule 25 Series • 3/4" Outlet
By: Rule

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Overview
Rule 500 GPH centrifugal bilge pumps offer many design features while keeping size and cost to a minimum. Especially popular on small craft, Rule 500 pumps are unmatched in pumping power and longevity.
This pump has a 3/4" discharge outlet.

"Non-Automatic" (traditional) models are activated by a separate float or panel mounted switch.

• Completely submersible
• Rust and corrosion protected
• Silent, vibrationless operation
• Moisture tight seals
• Anti-airlock protection
• Compact, energy efficient, long life motor
• Able to run dry without motor burn-out
• Marine grade sealed wiring
• Easy to clean, snap-lock strainer base
• Stainless steel shaft
• Ignition protected
• CE and ISO 8849 certification
• 3-year limited warranty


Heavy on the technical side...
Note — The capacity of ALL centrifugal bilge pumps, regardless of manufacturer, is rated at "open flow" — with no hoses or resistance to impede output. In actual use, however, the work of lifting the bilge water out of the boat will decrease the output of the pump.
The higher the lift, the less the output.
For a typical smaller bilge pump, expect an output decrease of approximately 8% per foot of lift.
For these Rule 500 gph pumps, the tested output is about 83% of rated capacity when the maximum height of the discharge hose (not the outlet thru-hull) is 2 ft above the pump, and about 65% of rated output at 4 ft above the pump.
Pump output is further decreased by long discharge runs, any elbows in the discharge line, internal corrugations in the hose selected, etc.

If you have any doubts about the ability of any bilge pump to meet the requirements of your installation, it is always prudent (and not much more expensive) to simply purchase a higher capacity pump.
 
 
 
 
 
 
 

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