Annovi Reverberi Reinstallations that require greater protection against corrosion and oxidation. Pump body, bottom and side covers made of die-cast aluminum and subjected to a protective coating cataphoresis treatment. Head machined directly from solid and made of AISI 316L stainless steel able to withstand acidic and saline atmospheres. Movement of the pistons realized through the system of crank-connecting rod. Connecting rods bronze. dual gasket sealing system able to minimize any leakage of water. In printed steel shaft and thermally treated to ensure high mechanical strength. oversized Main bearings. All ceramic Pistons.