Mouvex SLS eccentric disc pumps create a vacuum effect on the pump’s suction side and a compressor effect of the discharge side, pushing a complete product “plug” out of the piping. QuattroTec Series quaternary diaphragm pumps transfer liquids in a hermetically sealed environment; they incorporate a 4-piston diaphragm technology, with no mechanical seals, driven by an eccentric shaft and electric motor. Wilden Saniflo Hygienic Series air-operated double-diaphragm pumps handle a range of viscosities, solids and shear-sensitive products with a free-draining flow path; they do not contain any mechanical seals or rotating parts.