SEAFLO MARINE 56A Series 5.0 GPM Variable Speed Smart On Demand Marine/RV 5-Chamber Diaphragm Pump, 12V SEAFLO, SKU SFDP1-050-070-56A, delivers a high-capacity 5.0 GPM variable-speed freshwater pump designed for smooth, consistent pressure across multiple fixtures. Its advanced frequency-conversion control adjusts motor speed automatically based on demand, eliminating the need for a separate pressure switch or accumulator tank. The 5-chamber diaphragm design provides quiet operation, reduced cycling, and reliable flow for showers, faucets, and washdown applications. Built with a Santoprene diaphragm, EPDM valves, and a thermally protected, corrosion-resistant motor, this pump self-primes up to 6 feet and is engineered for long-term use in marine, RV, and off-grid water systems. Includes quick-connect fittings and an inline strainer for easy installation and maintenance.