TMC 450 GPH Bilge Pump (28 L/min) 12V – Compact Boat Bilge Pump

The TMC 450 GPH bilge pump is designed to keep your boat’s bilge dry, operating automatically (with an appropriate float switch/controller) or manually via a switch. With a capacity of ~28 liters per minute, this pump can handle incoming water from rain, waves, or minor leaks aboard your vessel. Its compact design allows it to be installed at the lowest point of the bilge – where water collects. The base of the pump doubles as a strainer, preventing debris from entering the impeller, and it detaches with a snap for cleaning any accumulated gunk (such as leaves, small bits of foam, etc.). The discharge outlet measures about 20 mm (3/4 inch), making it compatible with standard bilge hoses; simply secure the hose with a clamp and run the other end to a thru-hull fitting or overboard. The pump runs on 12 volts and draws only about 1.5 amps, meaning it can stay on standby (in auto mode) for extended periods without significantly draining the battery. The maximum discharge head (~2 m) is sufficient for most small boats – the pump can push water from the bilge up to the deck or out the transom with ease. The housing is made of impact-resistant plastic, and the internal motor is fully sealed for submerged operation. The shaft and hardware are stainless steel to prevent rust and ensure smooth performance. This pump is suitable as a primary bilge pump for small and mid-sized boats (fishing boats, runabouts, RIBs, etc.) or as an auxiliary pump in larger vessels (for separate compartments or as a backup). For optimal use, pair it with an automatic float switch or control panel so it activates when needed. With the TMC 450 GPH, you get proven quality from a reputable Taiwanese manufacturer, giving you peace of mind on the water.

Use Cases & Recommendations:

• Main pump for small boats (up to ~5–6 m): Ideal to install as the main bilge pump on small and mid-sized craft – fishing boats, open runabouts, RIBs, and more. It will quickly evacuate rainwater or spray that accumulates during use.
• Additional pump for larger vessels: In bigger yachts and cruisers, this 450 GPH pump can serve as a maintenance (“keep dry”) pump to maintain a low water level, while higher-capacity pumps (e.g. 1000+ GPH) handle heavy ingress. The small pump can cycle more frequently with minimal power draw, keeping the primary units ready for serious situations.
• Automation: It’s recommended to connect the pump to a float switch for automatic activation. This way, your boat will drain itself during rainfall or wave action even when you’re not on board. Use a 2–3A fuse to protect the circuit.
• Maintenance: Inspect and clean the strainer regularly (especially before and after the boating season) – debris buildup can reduce performance. Periodically flush the system with fresh water to wash out salt deposits and extend the pump’s life.
• Installation tips: Mount the pump at the lowest possible point in the bilge, on a flat and secure surface, using the provided screws. Ensure electrical connections are above the waterline and well insulated (with heat-shrink tubing or sealed connectors) to prevent corrosion. The discharge hose should run upward above the waterline (with an anti-siphon loop) to avoid backflow siphoning.