Dirt separators are used in heating and air conditioning control systems where the circulation of water containing impurities may result in rapid wear and damage to components such as pumps, seals and valves. Entrained dirt also causes blockages in the heat exchangers, heating elements and pipes, resulting in a lower thermal efficiency within the system. Caleffi DIRTCAL Dirt Separators, with specially designed internal media, provide surfaces that assist in separating the dirt particles, guiding them downward into a low-velocity chamber where they settle on the bottom and out of the flow path. Conveniently, the particles can then be flushed out through a drain valve even while the system is in operation. Caleffi’s high-performance DIRTCAL Dirt Separators can remove the smallest particles - as tiny as 5 microns - with extremely limited head loss and requiring less pumping energy than filters and strainers.