Rule Industries 55S 3700 GPH Heavy-Duty Automatic Bilge Pump

The Rule Industries 55S is a 3700 GPH automatic bilge pump that simplifies installation by eliminating the need for an external float switch. Using intelligent impeller resistance technology, this heavy-duty pump constantly monitors your bilge, automatically detecting water and pumping until dry.

How It Works:

Every 2.5 minutes, the pump performs an automatic bilge check. An electronic sensor detects water resistance on the impeller and activates the pump, continuing operation until the resistance is gone and the bilge is dry. This smart automation removes the complexity of traditional float switch installations.

Key Features:

• 3700 GPH pumping capacity for high-volume water removal
• Automatic operation with integrated electronic sensor eliminates external float switches
• Compact footprint ideal for deep keel sumps and confined spaces
• Integrated base with built-in strainer for easy debris protection
• Quick-release pump housing removes easily for cleaning and maintenance
• Rugged ABS plastic construction for marine durability
• 12-volt DC operation standard for marine electrical systems

Perfect for sailboats, powerboats, and other marine applications where space is limited or traditional float switches are impractical. The Rule 55S combines reliable automatic operation with easy installation and maintenance.