Rule 3700 GPH Non-Automatic 12V Bilge Pump

The Rule 3700 GPH Non-Automatic 12V Bilge Pump gives dependable high-capacity bilge-water removal for compatible boats and marine electrical systems. Its submersible centrifugal design places the pump directly in the bilge, allowing water to enter through the strainer and discharge through connected hose when the pump is activated.

Automatic control is incorporated into this model so the pump can respond to bilge water without relying solely on manual switching. Rule's anti-airlock design, corrosion protection, and compact motor construction support dependable unattended pumping when the installation is kept clean and electrically sound.

Confirm pump capacity for the boat, electrical supply, fuse or breaker protection, discharge-hose size, mounting location, and control method before installation. Keep the strainer accessible for cleaning and route the discharge hose to minimize restriction and backflow. Explore additional bilge water pumps when planning primary and backup pumping capacity. Have a look at the rest of our bilge and water pumps.

• Direct bilge mounting gives a straightforward path from intake to discharge.
• Anti-airlock design supports more consistent pumping.
• Accessible strainers help prevent debris from restricting the impeller.
• The pump can serve as primary or supplemental capacity when correctly sized and controlled.