Abstract: The present invention related to a filter consisting of a stack 4 of elements 5 comprising one cylindrical side and each element consisting of several isolated sections 23-24 and provided with orifices 35 for communication of its sections with the circumferences of the element and with a rotary distribution valve 37 mounted to rotate coaxially with the cylindrical side and comprising a chamber 22a for the isolation of a first section 23 from any element of the other sections, communicating with this first section through a port of the distribution valve.The form of the port 22a and the layout of the orifices 35 are such that the first sections 23 of only one part of the elements are in communication with the chamber 22a.One application is the manufacture of a filter of small size and high efficiency.

Abstract: The invention relates to a filter comprising main and secondary filtering stacks and a distribution valve provided with main and secondary enclosures adapted to isolate the filtering elements of the two stacks section by section with a view to deblinding them. According to the invention, a port, with which the distribution valve is provided, connects the main and secondary enclosures. One application of the invention is the production of a filter with high yield of filtration.

Abstract: The invention relates to a filter comprising main and secondary filtering stacks and a distribution valve provided with main and secondary enclosures adapted to isolate the filtering elements of the two stacks section by section with a view to deblinding them, the fluid issuing from deblinding being directed towards a discharge chamber. This chamber communicates with an enclosure without pressure via a duct and a complementary duct provided with a valve. One application of the invention is the production of a filter with high yield of filtration.

Abstract: The invention relates to a filter comprising a housing at inside which are provided two separate filtering zones, isolated one from the other, each zone containing a stack of filtering elements; at least one admission orifice for the fluid to be filtered; one rotary fluid distributor arranged so as to be co-axial to said filtering elements; and a motor driving the distributor coupled to a first end thereof, whereas the second end of the distributor is free with respect to the actual body of the filter, and is guided in rotation by said bore alone.