Parts of machines for technical purposes made of rubber, asbestos, metal, textile fibres, glass, artificial resin and other plastics, namely, ball cranes, stop valves, ball taps, steam taps, butterfly valves, reducing apparatus in the nature of pressure reducers, diaphragm valves, valves, ball valves, coupling discs and braking linings; cylinders for machines and for components of engines

MANUALLY OPERATED METAL VALVES, NAMELY, GATE VALVES, GLOBE VALVES, CHECK VALVES AND FREE FLOW STOP VALVES