Machinery for use in handling materials used in the food, pharmaceutical, chemical and cosmetics industries; comminution and reduction machinery; machines for reducing the size of particulate matter; vacuum pumps for machines; conveyors and conveying apparatus for handling particulate matter; filters being parts of machines; filters for use with machines for reducing the size of particulate matter; processing machines for mixing, dispersing, sieving, emulsifying, homogenising, deagglomerating, suspending and gasification of liquids and powders; dry milling apparatus; grinding apparatus; machines for use in granulation; conical screen mills; and parts and fittings for use with the aforesaid goods