through ball means 30 other than parallel to or collinear with the axis of rotation of ball means 30 through shaft 36 thus causing outlet 39 thereof to nutate about the axis of rotation of ball means 30 chamber 38 may be extended not shown to cooperate with other cleaning means 7 in a similar manner thereby eliminating the need for additional conduit 13 from valve 11 shaft 36 is coupled to a drive means such as a motor not shown alternatively ball means 30 may be truncated to provide a flat surface at the outlet 39 of bore 31 alternatively a plurality of cleaning means not shown such as stationary gas jets may be disposed along storage portion 8 and positioned such that gas emanating from each of the jets will intercept the distributor at a different angle thereby causing cleaning medium to be spread over the distributor surface the gas jets would be connected to a pneumatic control means not shown for actuating the jets in a predetermined pattern to effect high cleaning efficiency the operation of the cleaning process wherein cleaning means 7 comprises a gas jet 10 is as follows for ease of explanation and not by way of limitation two cleaning means 7 are shown in fig1 with cleaning medium 6 shown.