Water Diaphragm Pump 12V, 3.5 GPM, 55 PSI, Self Priming

12V RV water diaphragm pump delivers steady, on-demand pressure for faucets, sprayers, and washdowns—ideal when you need reliable flow in a camper, marine boat, or lawn setup. With 3.5 GPM open flow and a 55 PSI rated output (adjustable 40–80 PSI), it helps reduce weak water pressure and frequent cycling. Self-priming up to 6 ft supports flexible installs, while the automatic pressure switch starts/stops with tap use for hands-off operation.

Built for daily utility and quick-scan reliability, this self-priming diaphragm pump supports RV campers, yachts, boats, irrigation lines, courtyard long-distance pumping, and vehicle washing. The 4-chamber design with Santoprene diaphragm and EPDM valves helps maintain smooth operation, and the PA6 + 30% glass fiber housing adds durability. Rated for liquids up to 140°F/60°C and backed by FCC certification, it’s a practical upgrade for consistent water pressure without constant manual switching. Grab yours today and get your water system running the way it should.