Rule Automatic Bilge-Pump 500 - 3700 GPH 12v

Rule Automatic Bilge Pump 500 GPH 3/4" Port 12v
Your Price: $72.03
Save: $23.96
(24% Off $95.99)
Part # 25S
SHIPS TOMORROW!* if ordered in 20 hrs 27 mins.
Rule Automatic Bilge Pump 800 GPH 3/4" Port 12v
Your Price: $88.99
Save: $28.00
(23% Off $116.99)
Part # 20RS
SHIPS TOMORROW!* if ordered in 20 hrs 27 mins.
Rule Automatic Bilge Pump 1500 GPH, 1-1/8" port, 12v
Your Price: $173.19
Save: $84.60
(32% Off $257.79)
Part # 51S
SHIPS TOMORROW!* if ordered in 17 hrs 27 mins.
No Reviews | Write Review
Rule Automatic Bilge Pump 2000 GPH, 1-1/8" port, 12v
Your Price: $203.91
Save: $147.58
(41% Off $351.49)
Part # 53S
SHIPS TOMORROW!* if ordered in 17 hrs 27 mins.
No Reviews | Write Review
Rule Automatic Bilge Pump 3700 GPH 1-1/2" Port 12v
Your Price: $317.57
Save: $57.09
(15% Off $374.66)
Part # 55S
SHIPS TOMORROW!* if ordered in 18 hrs 27 mins.
No Reviews | Write Review
Automatic Marine Bilge Pump, 1100 GPH, 12V - Rule
Your Price: $93.64
Save: $60.95
(39% Off $154.59)
Part # 27S
SHIPS TOMORROW!* if ordered in 17 hrs 27 mins.
No Reviews | Write Review
Rule
Rule Pumps 12 Volt DC Automatic Bilge Pumps 500 GPH - 2000 GPH feature computerized operation on the principle of impeller resistance. Float switches are not required. The pump will turn on every 2-1/2 minutes to sense for water. If water is present, the pump will sense resistance and continue to run until all the water is removed. Thereafter, it will check for water every 2-1/2 minutes.Power use in the checking mode is minimal.

Rule Bilge Pumps - Identifying the 3 Wires

Rule Automatic Bilge Pump 500 GPH 3/4" Port 12v
Rule Automatic Bilge Pump 500 GPH 3/4" Port 12v
  • The Rule 500 automatic offers many design features including computerized operation, the pump will turn on every 2-1/2 minutes for about one second to sense for water, while keeping size and cost to a minimum.
  • Especially popular on smaller craft.
  • Rule 500 pumps are unmatched in pumping power and longevity.
  • 3/4" discharge outlet.
  • 12 volt.
Rule Automatic Bilge Pump 800 GPH 3/4" Port 12v
Rule 800
Automatic Round 12v

Rule Automatic bilge pumps eliminate the need for a separate float switch to activate the pump. Once power is supplied, starting and stopping is completely automatic. The pump checks for water every 2 + minutes by turning on for a second and measuring load against the impeller. If water is present, the pump remains on until the water is removed. Thereafter the pump resumes its 2-1/2 minute check cycle. The automatic pumps feature two positive leads: an automatic (brown) and a manual override (brown with a white stripe).
Rule Automatic Bilge Pump 1500 GPH, 1-1/8" port, 12v
  • Fully automatic mid-range capacity bilge pump.
  • 3 wire version for manual override or Hose I.D.icator light capability.
Rule Automatic Bilge Pump 2000 GPH, 1-1/8" port, 12v
  • Fully automatic.
  • Completely submersible - rust and corrosion proof.
  • Water-cooled motor designed for longer life.
  • Snap-off strainer for easy cleaning.
  • Made in USA.
  • This unit is ready for installation, ignition protected.12V DC.
  • 3rd wire can be connected to a switch for manual override or an Hose I.D.icator light.
  • Uses 1-1/8" hose.
Rule Automatic Bilge Pump 3700 GPH 1-1/2" Port 12v
Rule 3700
Automatic 12v

Heavy duty construction for both commercial and pleasure boat use; known for trouble free operation and reliability. 1-1/2 (38mm) discharge outlet.
Automatic Marine Bilge Pump, 1100 GPH, 12V - Rule
  • Fully automatic pump and switch in an affordable package.
  • 5.0 amp draw with a 1-1/8" Hose I.D.. outlet fitting.
  • Easily installed with maintenance free operation.
  • Uses 1-1/8" Hose.
Based On 1 Review
Outstanding pump by Sixto - Kissimmee, FloridaAugust 23, 2011
Great pump. Very reliable.
(5 of 5 people found this review helpful)
Was this review helpful?
Based On 3 Reviews
Rule Automatic Bilge Pump 800 GPH 3/4" Port 12v by David - New Johnsonville, TennesseeJuly 05, 2013
Works great! Unfortunately I had to find out when I neglected to insert the drain plug!
(1 of 1 people found this review helpful)
Was this review helpful?
Works great! by Anthony - South san Francisco, CaliforniaJune 12, 2013
Works as it is suppose to (constant ck every couple minutes, manual on or off - attached to a 3-way toggle switch). Easy installation. Great safety feature for my boat.
Was this review helpful?
Rule Auto Bilge Pump by Steve - Fremont, CaliforniaSeptember 22, 2012
I had a manual bilge in my boat and wanted an automatic one. I installed this Rule 800 GPM bilge. It has wiring for auto and manual over-ride which was a feature I wanted. I debated at first whether to add a 3 position switch, but opted to just connect the auto wire direct to the battery through a fuse since I have a battery on/off switch. This bilge automatically runs a 1-2 second test where it briefly switches on to measure resistance (presence of water in the bilge changes this resistance activating the pump). This self test runs every few minutes so you definitely need a way to shut it off when the boat is not in the water.
Was this review helpful?
This product ships in 1 business day.

Add to Cart and enter your Postal Code to determine the shipping charges and estimated delivery date.
* Most products and orders leave our warehouse in 1 business day. However, select items may take more processing time. Alaska and Hawaii orders please add 1 additional warehouse processing day.
Standard Shipping Policies

Please be careful when ordering this product, it has limitations that differ from our General 30-day Return Policy. After all, we want you to be satisfied with your order so you'll return again and again as an iboats.com customer, and to also recommend us to your boating friends

Electronics/Software/Videos
Electronics/Software/Videos are not returnable. Please be careful when ordering to choose the correct product.

See our complete return policy.
Great Boating Days are Ahead!
Enjoy Extra Discounts 5-20% Off During the SPRING SAVINGS SALE!
Great Boating Days are Ahead!
Enjoy Extra Discounts 5-20% Off During the SPRING SAVINGS SALE!