Cast iron prefilters complying with DIN 2501, with connection from DN 65 to DN 200.
They are provided with 3 or 4 closing knobs depending on the model, to ensure perfect sealing of the cap. Vessel and prefilter cap in cast iron, basket in stainless steel AISI 316.
The range of prefilters allows the use of monobloc normalised centrifugal pumps series NKM-G/NKP-G, from DN 40 to DN 150, for water circulation in large filtration systems.
The same filters can be used with normalised base pumps with joint (KDN) or with inverter MCE.