www.pmmag.com/articles/98650-dirt-separators-for-boiler-systems
Dirt Separators for Boiler Systems
December 16, 2008

Caleffi Dirtcal low-velocity zone dirt separators continuously remove dirt in boiler systems, using compact heat exchangers with very small passageways, such as those found in modern mod-con boilers. It creates less pressure drop than that of comparably-sized basket or Y-strainers. Remains in-service for longer periods between cleaning because it secures the collected sediment away from the flow stream.
For more information, visit www.caleffi.us.