The AR Annovi Reverberi pressure washer pump rtx30 features a forged nickel plated brass strength manifold with no porosity for long life.  The plungers of the AR Annovi Reverberi pressure washer pump rtx30 as a special aluminum oxide blend, with solid ceramic for long life and strength durability.  The bearings are over sized for load disbursement.  The oil seals are constructed of Buna-N rubber.  The o-rings have stainless steel grader springs to assure tension on the sealing surface.  The plunger rods on the  AR Annovi Reverberi pressure washer pump rtx30 are made of stainless steel and the connecting rods are a heavy two piece aluminum, over sized for maximum strength , load disbursement and life.  The crankshafts on the  AR Annovi Reverberi pressure washer pump rtx30 are forged and heat treated to add strength, durability and long life of these pumps from Annovi Reverberi.