9 Measuring, signalling and checking (supervision) apparatus and instruments, pressure measuring apparatus and pressure display apparatus, flow meters for gases, gas pressure regulators, valve control apparatus; Equipment and construction units for the checking (supervision) and regulating of gas and liquid quantities and of gas mixtures, namely control panels, switchboards or switch cabinets, mainly combined with measuring sensors, flow and pressure regulators, switching and control valves and similar goods, in particular for industrial purposes; Measuring and control apparatus for liquid flows.
11 Regulating and safety accessories for gas devices and apparatus, in particular for gas supplies for heat treatment furnaces and heat treatment stations; Regulating apparatus for liquid flows; Apparatus and devices for the heating, heat retention and heat treatment of materials and goods, in particular iron and steel, and components therefor, in particular gas supplying, gas regulating and gas distribution modules, and burners and gas generators, gas purifiers and liquid gas vaporisers, apparatus for gas processing and preparation for existing or delivered frozen liquefied gases, in particular heat exchangers and vaporisers, switching, conveying and regulating systems for cryogenic liquefied gases, and for the resulting gaseous gases, all the aforesaid goods included in class 11.
