Rule Industries 56D GPH Non-Automatic Submersible Electric Bilge Pump - 4000 12V

The Rule Industries 56D is a high-capacity, fully submersible 12-volt electric bilge pump engineered for demanding marine applications. Delivering 4,000 GPH (15,140 LPH) at open flow, it packs maximum pumping performance into a compact, lightweight housing — making it an ideal primary bilge pump for larger yachts, motor cruisers, and commercial vessels.

This non-automatic model operates via a separate float switch or panel-mounted switch (sold separately), giving boaters traditional, straightforward control over bilge water management. A 2-inch (51mm) threaded discharge outlet simplifies installation and allows for secure hose connections. Built-in backflow prevention minimizes residual water in the bilge, reducing moisture, odor, and corrosion over time.

Key Features:

• 4,000 GPH (15,140 LPH) open-flow pumping capacity
• Fully submersible construction with rust and corrosion protection
• Compact, energy-efficient long-life motor — can run dry without burnout
• Hidden anti-airlock vents prevent air locking in complex plumbing installations
• Snap-lock strainer base for quick, easy cleaning without tools
• Built-in thermal cut-off for added motor and vessel protection
• Backflow prevention keeps bilge drier between pump cycles
• Marine-grade sealed wiring and moisture-tight seals
• Silent, vibration-free operation
• Meets ISO 8846 (ignition protection) and ISO 8849 (marine bilge pump) standards

Specifications:

• Voltage: 12V DC
• Amp Draw: 15.5A
• Fuse Size: 25A
• Discharge Outlet: 2 in (51mm) threaded
• Height: 7.75 in (196.8mm)
• Width: 4.875 in (124mm)
• Maximum Recommended Discharge Head: 13.1 ft (4m)

The Rule 56D is a trusted solution for keeping bilges dry and vessels protected. As a non-automatic pump, it pairs with Rule float switches or panel switches for a complete, reliable bilge management system.