power operated apparatus for cleaning the heat exchanging surfaces of boilers and other heat exchangers; boiler cleaning equipment namely, soot blowers and nozzles and parts for same; power operated soot blowers and parts therefor; air port cleaning machines for boilers; valves being parts of machines; valves for regulating ash flow through conveying lines used in dry ash collecting systems; segregating valves being part of vacuum pneumatic material transport machines; valves being parts of the transport piping of hydraulic conveying machines used in the conveyance of abrasive slurries; boiler cleaning equipment namely, water cannons, water lances and nozzles and parts for same; power operated water cannons, water lances and parts therefor for cleaning surfaces of heat exchangers

liquid level gauges and telegauges; liquid level gauges and replacement parts therefor; liquid level gauges and telegauges comprising both gauges per se, and means for transmitting to a remote location the information as to liquid level as determined by the gauges per se, such means for transmitting said intelligence comprising optical systems and electronic systems, said electronic systems including cable connected television apparatus for transmitting the liquid level indication to a remote location; system for monitoring ongoing combustion processes, namely, optical thermal, particle, and gas analyzing sensors, computer processor hardware, and applications software for generating live video images of ongoing combustion processes in boilers; computer based data imaging and processing equipment, namely, computers and computer programs for directly measuring heat transfer surface reflectivity in monitoring large industrial boilers commonly employed for steam generation such as in electrical utility power plants and presenting both actual images thereof and graphic representations thereof; apparatus for viewing a combustion flame, analyzing and monitoring characteristics thereof, optical devices for determining furnace exit gas temperatures in coal fired boilers without direct contact with the exit gas; temperature indicators

feed tubes for sootblowers for use in cleaning boilers; apparatus for use in conjunction with boiler furnaces and the like, namely, hoppers, furnace bottoms, furnace walls, ash gates, sluiceways, quenchers, and bunkers [ ; control rod drives ]