Patent ID: 8658032
Filing Date: 2014-02-25
Classification: B01D

Abstract:
1. A filter cartridge ( 60 , 160 ) comprising a filter wall ( 63 , 163 ) having a tubular shape and at least a support plate ( 61 , 161 ) fixed to an end of the filter wall ( 63 , 163 ), wherein a by-pass conduit ( 66 , 166 ) is fashioned in the support plate ( 61 , 161 ), which by-pass conduit ( 66 , 166 ) is designed to place an internal volume ( 64 , 164 ) delimited by the filter wall ( 63 , 163 ) in communication with outside, which by-pass conduit ( 66 , 166 ) is intercepted by a valve ( 70 , 170 ) which is associated to the support plate ( 61 , 161 ) in an out-of-centre position with respect to a longitudinal axis (A, A 2 ) of the filter wall ( 63 , 163 ), wherein the valve ( 70 , 170 ) comprises an internally-hollow valve body ( 71 , 171 ), which is provided with a hole ( 72 , 172 ) suitable for setting the bypass conduit ( 66 , 166 ) in communication with the internal cavity of the valve body ( 71 , 171 ), an obturator ( 73 , 174 ) housed in the internal cavity of the valve body ( 71 , 171 ), and an elastically-acting element ( 75 , 180 ) suitable for pressing the obturator ( 73 , 174 ) against a valve seating ( 74 , 179 ) such as to close the hole ( 72 , 172 ), the valve ( 70 , 170 ) being housed internally of a blind seating ( 67 , 167 ) afforded in the support plate ( 61 , 161 ), wherein said blind seating ( 67 , 167 ) opens on an external surface of the support plate ( 61 , 161 ) opposite to the filter wall.