7 Electrical power generators for burners and flares; hydraulic pumps for burners or flares; hydraulic, linear, pneumatic actuators and valves for igniters; control regulators being parts of machines for heating or steam generating or steam handling installations or hot gas generating and hot gas handling installations or oxidisers or incinerators; control regulators being parts of machines for use in igniters, burners and flares; electric, hydraulic and pneumatic pumps for heating and heating installations; ignition wires and spark plugs for gas turbine ignition systems; machines for generating steam or hot gas, namely, steam operated power generators; fuel pumps for burners and flares; fuel skids for gaseous or liquid fuels, namely, transport or lifting work platforms for gaseous or liquid fuels; control regulators being parts of machines; burner and flare fuel filters being parts of machines for generating steam; fans, igniting devices and fuel injectors being parts of machines for generating steam; gas pokers, namely, pokers for use in igniting gas-powered machines; oil lances, namely, tubes for supplying oil for flame formation being structural parts of machines; devices which are fitted to burners or flares or installed upstream or downstream thereof whose primary function is to reduce emissions being structural parts of machines, namely, flue gas recirculation systems, namely, systems which mix part of the flue gas emitted from the burners or flares with clean air and supply the newly mixed flue gas/air combination back to the burners or flares and comprised primarily of fans, ducting and mixing devices, and also including control systems for controlling this recirculation and consisting of gas analyzers, control valves, dampers, pressure transmitters, flow transmitters and temperature transmitters therefor; staged combustion systems being systems that introduce air and fuel in stages to burners and flames and comprised primarily of fans, ducting and mixing devices, and also including control systems for controlling this staged introduction and consisting of gas analyzers, control valves, dampers, pressure transmitters, flow transmitters and temperature transmitters therefor; combustion air feeding apparatus for boilers or furnaces, namely, over fire air ports, namely, one or more air ports in a boiler or furnace which introduce secondary air above the burner flame to complete combustion and to produce turbulence, thereby increasing the efficiency of the combustion process; catalytic convertors; ammonia or urea injection systems being chemical injectors comprised primarily of chemical injectors, and also containing reagent storage tanks, mixers, dosing pumps, dosing meters, flow controllers, gas analyzers, PH analyzers, control valves, injection nozzles and flow meters therefor; Steam injection systems comprised primarily of steam injection machines and also containing flow meters, steam injection nozzles, diffusers, mixers, flow control valves and pressure transmitters therefor; water injection systems, comprised primarily of water injection machines and also containing storage tanks, pumps, flow controllers, gas analyzers, control valves, injection nozzles and flow meters therefor; pumps, pipes, valves and instrumentation for incinerators, oxidisers, burners and flares; all the aforesaid goods being for use in burners or flares, or in machinery which is ancillary to burners and flares or is installed with burners or flares or upstream or downstream thereof