Thus, cleaning-up becomes an easier operation. In this way we reduce, and almost eliminate, internal friction of moving parts and enable the pump to work dry.Ī similar coating, this time to avoid oil-sticking, has been made externally on the pump body. In addition, for the first time we incorporate in this prototype PTFE seals and a sealing disc in VITÓN®, in addition to coating the worm screw and laterally disc contact surfaces with a fluor-based copolymer, family of PTFE. Since our goal is to provide the pump with the best materials to ensure a long life in any circumstance, we decided to use AISI 316 for casting, as well as for the screw and other pieces previously developed. After three years of hard work of research and development we finally reached the first of the objectives set at the beginning of our journey, the Archimedes’ Screw Pump with Sealing Disc.Īs a culmination of the previous prototypes, we have manufactured the definitive prototype with a stainless steel cast-iron body that will serve as a prelude to the imminent mass production of the pump.

Archimedes screw pump design manual