Browse categories of Hydraulic separators Standard hydraulic separator Multifunction hydraulic separator The hydraulic separator is a device that makes the circuits (primary and secondary) connected to it independent, and can be used in hot or chilled water systems, also combining the deaeration and impurity separation functions. Standard hydraulic separator Hydraulic separator. Hydraulic separator. Hydraulic separator. Multifunction hydraulic separator SEP4, Multifunction hydraulic separator.