Manufacture Of Other Pumps, Compressors, Taps, And Valves ISIC Code 2813. This class includes the manufacture of air or vacuum pumps, air or other gas compressors, manufacture of pumps for liquids whether or not fitted with a measuring device, the manufacture of pumps designed for fitting to internal combustion engines: oil, water, and fuel pumps for motor vehicles, etc. Manufacture of industrial taps and valves, including regulating valves and intake taps, manufacture of sanitary taps and valves, manufacture of heating taps and valves, and manufacture of hand pumps.