Rule 800 GPH Boat Bilge Pump – 12V & 24V is a compact, non-automatic marine bilge pump designed to remove unwanted water from the bilge area of a boat. With a rated pumping capacity of 800 gallons per hour, equivalent to approximately 3,028 litres per hour, it provides practical drainage support for small and medium-sized recreational and working vessels. The pump is available in two electrical variants: the M20DA-12V for 12V DC systems and the M20DA-24V for 24V DC systems. Both versions use a 3/4-inch (19 mm) discharge connection, allowing the pump to connect to a commonly used marine bilge hose size.

This Rule bilge pump is a non-automatic model, meaning it must be activated through a separate panel switch or connected to a compatible float switch. A panel switch allows the operator to control the pump manually, while an additional float switch can activate it when water reaches a set level. This arrangement gives boat owners flexibility when planning a bilge pumping system and makes the pump suitable for replacing an existing non-automatic boat bilge pump or creating a new drainage setup. Rule’s official reference information lists compatible float and panel switch options for both the 12V and 24V versions.

The M20DA-12V version is designed for a 12V DC electrical supply. It is listed with a current draw of 3.4 amps at 12V and 4.3 amps at 13.6V, together with a recommended 7.5-amp fuse. The M20DA-24V version is intended for 24V DC systems and is listed at 1.7 amps at 24V and 2.0 amps at 27.2V, with a recommended 4-amp fuse. Buyers should select the voltage that matches the vessel’s onboard electrical system rather than using a different-voltage pump. Both variants measure approximately 4-3/8 inches or 111 mm in height and 2-7/8 inches or 74 mm in width, helping the marine bilge pump fit into confined bilge compartments where installation space may be limited.

The 3/4-inch outlet supports connection to a suitable discharge hose and related marine plumbing fittings. The rule also lists straight and 90-degree 3/4-inch hose-barb fittings for the 800 GPH pump range, which can help installers arrange the discharge hose according to the available space. The pump range incorporates an optimised impeller, thermal cut-off protection, backflow-control features and air vents intended to reduce air-lock problems in challenging plumbing arrangements. Actual pumping output after installation can vary according to discharge height, hose length, bends, fittings, and other restrictions in the plumbing system. For effective operation, the hose route should therefore be kept as direct and unrestricted as the vessel layout allows.

Key Features:

• Rule 800 GPH Boat Bilge Pump – 12V & 24V provides a rated flow capacity of 800 GPH, or approximately 3,028 LPH, for removing collected bilge water.
• Available in M20DA-12V and M20DA-24V variants for 12V or 24V DC marine electrical systems.
• Non-automatic operation supports control through a separate panel switch or compatible float switch.
• The 3/4-inch or 19 mm outlet connects to an appropriately sized bilge discharge hose.
• Compact dimensions help with installation in bilges and other restricted marine spaces.
• The optimised impeller is designed to provide efficient water movement at the specified electrical load.
• Built-in thermal cut-off provides additional protection for the pump during operation.
• Air vents in the pump body help reduce the possibility of air locking.
• Compatible straight and 90-degree outlet fittings provide flexibility when routing the discharge hose.
• A removable or replaceable strainer arrangement helps prevent larger debris from entering the pump mechanism.

Applications / Suitable For:

• Rule 800 GPH Boat Bilge Pump – 12V & 24V is suitable for removing nuisance water collected in the lower bilge area of recreational and working boats.
• Suitable for small to medium-sized boats fitted with compatible 12V or 24V DC electrical systems.
• Can be used in fishing boats, leisure craft, runabouts, centre-console boats, small cabin boats and similar marine vessels.
• Suitable as a replacement bilge pump where the required voltage, capacity, outlet size, and installation dimensions match.
• Can be connected to a manual panel switch for operator-controlled pumping.
• Can be paired with a compatible float switch when water-level-based activation is required.
• Useful for maintaining a primary or supplementary bilge drainage arrangement, subject to the vessel’s pumping requirements and installation plan.

FAQs:

Q: Is the Rule 800 GPH Boat Bilge Pump – 12V & 24V automatic?
A: No. It is a non-automatic bilge pump. It requires a separate panel switch for manual operation or a compatible float switch for water-level-based activation.

Q: What is the difference between the two variants?
A: The M20DA-12V is designed for 12V DC systems, while the M20DA-24V is designed for 24V DC systems. Both provide an 800 GPH rated capacity and use a 3/4-inch outlet.

Q: What hose size is required for this boat bilge pump?
A: The pump has a 3/4-inch or 19 mm discharge connection. Use a suitable marine bilge hose and fittings that match this outlet size.

Q: Does the pump always deliver exactly 800 GPH after installation?
A: The stated 800 GPH is the rated capacity. Actual output can be lower depending on vertical discharge height, hose length, bends, fittings, and other flow restrictions.