Rule 1100 GPH Boat Bilge Pump – 12V & 24V is a compact submersible marine bilge pump designed to remove accumulated water from the bilge area of a boat. With a nominal pumping capacity of 1100 gallons per hour, it is suitable for maintaining a drier bilge in recreational boats, fishing boats, workboats, and other vessels with a compatible 12V or 24V DC electrical system. The pump is available in automatic and non-automatic configurations, allowing buyers to select the operating method that matches their vessel’s electrical and bilge-water management setup.

Three variants are available. The M27SA is a 12V automatic bilge pump with a 1-inch outlet. It can start and stop automatically without requiring a separate float switch. Rule automatic pumps periodically check for water by briefly operating and measuring the load on the impeller. When water is detected, the pump continues running until the water has been removed, after which it returns to its automatic checking cycle. The automatic model also supports a manual override connection when wired through a suitable control arrangement.

The M27DA is a 12V non-automatic boat bilge pump, while the M27DA-24 is the corresponding 24V non-automatic version. Both models have a 1-inch outlet and require an external method of activation, such as a compatible panel switch or float switch. This makes the non-automatic variants suitable for boat owners, technicians, and boatbuilders who want to integrate the Rule bilge pump into an existing switching or bilge-control system.

The manufacturer’s standard 1100 GPH pump manual lists the 12V model at approximately 3.7 amps when operating at 12V and specifies a 7.5-amp fuse. The 24V version is listed at approximately 1.9 amps at 24V with a 4-amp fuse. Electrical installation should follow the pump instructions and the vessel’s wiring requirements. Wire connections should remain above the highest expected water level and should be protected with suitable marine-grade connectors and sealant to reduce the possibility of corrosion.

This Rule 1100 GPH boat bilge pump is designed for use with a flexible discharge hose. The 1-inch outlet should be connected to a correctly sized hose and secured with corrosion-resistant hose clamps. Pumping performance can be affected by discharge-hose length, sharp bends, rough internal hose surfaces, reduced fittings, and other restrictions in the discharge line. A shorter, smoother, and more direct hose route can therefore help the marine bilge pump operate closer to its rated capacity.

Routine inspection is important for any bilge pump installation on a boat. The pump, intake area, discharge hose, and surrounding bilge should be checked periodically for dirt, debris, or damage that could restrict water flow. The removable base allows access during inspection and cleaning. Selecting the correct voltage, operating type and discharge-hose arrangement helps ensure that the chosen Rule pump works correctly within the boat’s bilge system.

Key Features:

• Rule 1100 GPH Boat Bilge Pump – 12V & 24V provides a nominal 1100 GPH pumping capacity for removing unwanted water from a vessel’s bilge compartment.
• Available in three models: M27SA automatic 12V, M27DA non-automatic 12V, and M27DA-24 non-automatic 24V.
• All three Rule bilge pump variants are supplied with a 1-inch discharge outlet.
• The M27SA automatically checks for water and operates when water is detected, eliminating the need for a separate float switch for automatic activation.
• The M27DA and M27DA-24 can be operated through a compatible panel switch or connected to a separate float switch for automatic water-level control.
• Designed as a compact submersible boat bilge pump for installation in the lower bilge area.
• Compatible with flexible discharge hose for practical routing through the vessel’s bilge and plumbing system.
• Removable pump base supports easier access for periodic inspection, cleaning, and maintenance.
• Available for both 12V and 24V DC marine electrical systems.

Applications / Suitable For:

• Rule 1100 GPH Boat Bilge Pump – 12V & 24V is suitable for removing accumulated bilge water from compatible recreational, fishing, and working vessels.
• Bilge-water removal systems in motorboats, small yachts, fishing boats, and utility boats.
• New marine electrical and bilge-pump installations require a 1100 GPH pump.
• Replacement of a compatible 12V or 24V marine bilge pump with a 1-inch discharge connection.
• Automatic bilge-control installations using the M27SA 12V model.
• Manually switched systems using the M27DA 12V or M27DA-24 24V model.
• Installations where a non-automatic pump will be connected to a separate float switch or bilge-pump control panel.
• Boat maintenance, refit, and marine plumbing projects requiring a compact Rule pump.

FAQs:

Q: What variants are available for the Rule 1100 GPH Boat Bilge Pump – 12V & 24V?
A: The available variants are the M27SA automatic 12V model, M27DA non-automatic 12V model, and M27DA-24 non-automatic 24V model. All three have a 1-inch outlet.

Q: Does the M27SA require a separate float switch?
A: No. The M27SA is an automatic bilge pump that checks for water and activates automatically. It may also be wired with a manual override function.

Q: How are the non-automatic models activated?
A: The M27DA and M27DA-24 require a compatible panel switch, float switch or another suitable external control arrangement.

Q: Can the 12V and 24V models be used interchangeably?
A: No. The selected pump voltage must match the vessel’s DC electrical system. Choose the 12V M27SA or M27DA for a compatible 12V system and the M27DA-24 for a compatible 24V system.