Centrifuges, including centrifugal dryers; filtering or purifying machinery and apparatus for liquids or gases

842111 Centrifuges; cream separators 842112 Centrifuges; clothes-dryers 842119 Centrifuges; n.e.c. in heading no. 8421, including centrifugal dryers (but not clothes-dryers) 842121 Machinery; for filtering or purifying water 842122 Machinery; for filtering or purifying beverages other than water 842123 Machinery; filtering or purifying machinery, oil or petrol filters for internal combustion engines 842129 Machinery; for filtering or purifying liquids, n.e.c. in item no. 8421.2 842131 Machinery; intake air filters for internal combustion engines 842132 Machinery; catalytic converters or particulate filters, whether or not combined, for purifying or filtering exhaust gases from internal combustion engines 842139 Machinery; for filtering or purifying gases, other than intake air filters, catalytic converters or particulate filters for internal combustion engines 842191 Centrifuges; parts thereof, including parts for centrifugal dryers 842199 Machinery; parts for filtering or purifying liquids or gases