Description Fresh water diaphragm pump from Shurflo, with redesigned 4 chamber head, fully adjustable sealed pressure switch and heavy duty sealed motor. Built in check-valve, self primes (up to 6 feet), will run dry without damage. Ignition and thermal protection. Heavy duty design provides smoother flow due to 4 chamber head. Product Specifications: 11.4lpm, 30psi 4 chamber head Built in check-valve Self priming Heavy duty sealed motor