shurflo enjoy high flow & quiet operation members save shurmo flow reaction technology" reduces cycling for quiet operation best off installation seller! • 55 psi • 4 gpm 10 amps max • 2.8 amps at full flow flow reaction by-pass technology produces low cycling and high powered flow members save runs dry without damage automatic overheat protection no rapid cycling • 55 psi • 3 gpm • 54 db • 7.5 amps • 2.2 amps at full flow revolution enjoy smoother water flow and extend the life of your fresh water pump unique one-piece diaphragm and internal by-pass assure long life and top sound absorbing baseplate exclusive diaphragm design prevents high-pressure damage caused by city water systems • 50 psi • 2.3 gpm • 50 db • 5 amps • 1.5 amps at full flow