Specifications include, but are not limited to: Impellers to be high-strength bronze alloy, accurately balanced for precision fit and durability. Impellers to feature a double seal ring design to minimize end thrust. Renewable bronze, double-labyrinth, wrap-around seal rings are to be furnished in the pump. Pump shaft to be precision-ground stainless steel Pump shaft is to be splined to receive broached impeller hub.- NO EXCEPTIONS PUMP TO HAVE SILICON CARBIDE MECHANICAL SEAL – NO EXCEPTIONS Pump casing shall be of ductile iron vertically split, with a minimum tensile strength of 65,000 PSI - bronze-fitted. The module shall be constructed using aluminum square tubing The pump operator's upper gauge panel shall be constructed from brushed stainless steel Panel shall include color coded labels, pump panel light – 4 gauge panel Panel to include electronic pressure governor with Idle Mode - Preset - Increase - Decrease - Silence.