Browse categories of Deaerators-dirt separators for medium-large systems Steel deaerators-dirt separators Steel deaerators-dirt separators with magnet The deaerator-dirt separator separates both the air and the impurities circulating within the closed circuits of medium-large heating and cooling systems. Steel deaerators-dirt separators DISCALDIRT®, Deaerator-dirt separator. Flanged connections. Steel deaerators-dirt separators with magnet DISCALDIRTMAG, Deaerator-dirt separator with magnet.