SEAFLO 33 Series ‎SFDP1-030-045-33 12V DC RV/Camper/Boat/Off-Grid On Demand Self-Priming Fresh Water Pressure Pump

The SEAFLO 33 Series (Model SFDP1-030-045-33) is a high-performance 12V diaphragm water pump engineered for dependable, on-demand freshwater delivery in RV, marine, cabin, and off-grid systems. With a 3.0 GPM open flow rate and a 45 PSI shutoff, this pump’s advanced 3-chamber diaphragm design ensures smooth, steady pressure with minimal cycling. It can supply up to four fixtures simultaneously, making it ideal for multi-outlet setups such as sinks, showers, and toilets.

Designed for durability, the pump uses Santoprene diaphragms and EPDM valves for long-term resilience in demanding environments. It self-primes up to 6 ft and can safely run dry, offering flexibility in installation. The built-in automatic pressure switch activates the pump when a fixture opens and shuts it off when closed. Pressure is adjustable between 17–60 PSI, allowing fine-tuning for different plumbing systems.

Certified to NSF/ANSI/CAN 61 & 372 for potable water, NSF 24 for RV plumbing, UL 778, and CSA C22.2 No. 108, the SEAFLO 33 Series is fully compliant for safe drinking water use across North America. It is the #1 trusted OEM pump used by leading RV manufacturers including Forest River, Thor, Winnebago, Grand Design, Brinkley, and more.

Backed by SEAFLO’s 4-year limited warranty, this pump delivers long-lasting reliability, strong performance, and industry-leading certification—making it one of the most dependable freshwater solutions for RVers, boaters, and off-grid users.

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