Manual self-priming hand diaphragm pump built for marine use — delivers up to 45 L/min (720 GPH) for bilge water, saltwater, waste, or general transfer. Key benefits High flow performance: Moves up to 45 liters per minute (720 gallons per hour) so tasks finish faster without relying on power. Reliable priming and suction: Self-priming diaphragm design removes need for external priming and handles routine suction tasks consistently. Marine-grade durability: Aluminum alloy and ABS construction resists corrosion and stands up to the wear of saltwater and bilge environments. Easy to operate and stow: Removable 2-position aluminum handle provides comfortable pumping leverage and a compact option for storage or transport. Simple hose compatibility: Inlet and outlet accept 33 mm (1-1/4 in) diameter hose for straightforward hookup to standard marine plumbing. Features and specifications Type: Manual self-priming hand diaphragm pump Maximum flow: 45 L/min (720 GPH) Suitable fluids: Bilge water, saltwater, waste, transfer liquids Body materials: Aluminum alloy and ABS Handle: Removable 2-position aluminum handle for better grip and maneuverability Ports: Inlet and outlet sized for 33 mm (1-1/4 in) diameter hose Mounting: Easy to mount; mounting screws are not included Practical applications Bilge pumping on small boats and tenders — efficient removal of accumulated water when power is unavailable. Livewell or bait tank transfers and saltwater handling — durable materials resist corrosion from repeated saltwater exposure. Portable waste or tank transfer — manual control for emptying or transferring portable toilet waste and other non-hazardous fluids. Installation and use notes Use 33 mm (1-1/4 in) diameter hose for inlet and outlet connections. Handle can be positioned for pumping efficiency or removed for compact storage. Mount securely to a stable surface; mounting screws are not included. What makes it stand out Combines manual reliability with a high flow rate and marine-grade materials for dependable, non-powered pumping where electrical systems are impractical or unavailable.