Maximum flow rate is 660 gallons per hour. (11gpm) Which is enough flow to supply up to four plumbing fixtures simultaneously. * Continuous duty high power 1/2 hp totally enclosed fan cooled pump motor (TEFC) (120V/60hz/370 operating watts/550 watts max). * Maximum pressure is 60 psi. * Maximum water lift height overall is 130 feet. Maximum vertical suction height prior to pump is 29.5 feet. * Centifugal pump housing is made of precision cast, heavy duty cast iron for a long and corrosion resistant life.