Engineered Systems Magazine

Dirt separators

August 13, 2009

Caleffi introduces a new addition to its proven DIRTCAL family of dirt separators for increasing performance in hydronic piping systems. The new 5465 series models, specially designed for commercial hydronic systems, are made from fabricated high strength steel with stainless steel internal element and coated with epoxy resin paint with a stainless steel internal element. They are rated for 150 psi working pressure and 250°F maximum operating temperature. Available with ANSI raised-face flanges in 2” to 6” sizes, they are designed for flow rates ranging from 37 to 376 GPM at 4’ per second maximum fluid velocity. Models built in accordance with ASME Section VIII, Division 1 standards are also available.

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.