Air-conditioning apparatus and installations; Heat exchangers not being parts of machines; Heat exchangers, other than parts of machines; Refrigerating appliances and installations

Gas diverters consisting of a pump, storage and refilling tank, pre-heater, vaporizer, recuperator, condenser and valves; Heat exchangers being parts of machines; Mineworking machines; Parts of oilfield wellhead machines, namely, gate valves, ball valves, check valves, plug valves, globe valves, choke and manifold industrial pumps, pump and valve parts, pipe fittings and flanges