Description: DIAGNOSTIC ANNUNCIATORS, COMPUTERIZED AND NON-COMPUTERIZED BURNER CONTROLS, COMPUTERIZED AND NON-COMPUTERIZED BOILER CONTROLS AND TEMPERATURE CONTROLS; OXYGEN TRIM SYSTEMS CONSISTING OF OXYGEN TRIM SENSORS, CONTROLS AND ANNUNCIATORS FOR USE WITH COMBUSTION EQUIPMENT, AND PARTS THEREFOR; BURNER CONTROL SYSTEMS CONSISTING ESSENTIALLY OF OXYGEN TRIM SYSTEMS, BURNER CONTROLS AND/OR BOILER CONTROLS AND PARTS FOR ALL OF THE FOREGOING; BOILER FEEDWATER SYSTEMS CONSISTING ESSENTIALLY OF RECEIVERS, PUMPS, CONTROLS, VALVES, PIPING, MOTORS, GAUGE GLASS, THERMOMETERS, GAUGES, SIPHONS, SHUT-OFF COCKS, STARTERS AND SWITCHES, ALL SOLD AS A UNIT, AND PARTS FOR ALL THE FOREGOING; CHEMICAL FEED SYSTEMS CONSISTING ESSENTIALLY OF PUMP MOTORS, AGITATORS, TANKS, FAMES, SUPPORTS, GAUGE GLASS, VALVE FITTINGS, STRAINERS, VALVES, PIPES AND LIDS, AND PARTS FOR ALL OF THE FOREGOING; BOILERS INCLUDING THOSE USED TO GENERATE STEAM AND/OR HOT WATER; [ FLUID PURIFICATION, SEPARATION AND/OR CONCENTRATION UNIT UTILIZING MEMBRANE PROCESSES AND PARTS THEREFOR; ] ION EXCHANGE EQUIPMENT CONSISTING ESSENTIALLY OF WATER SOFTENING AND CONDITIONING UNITS, DEALKALIZERS, DEMINERALIZERS, WATER FILTERING UNITS AND PARTS FOR ALL OF THE FOREGOING; INDUSTRIAL BURNERS; DEAERATORS; BLOWDOWN HEAT RECOVERY UNITS CONSISTING ESSENTIALLY OF HEAT EXCHANGERS, SURGE TANKS, TEMPERATURE CONTROLS, FLASH TANKS, BOILERS, WATER COOLERS, AND PARTS FOR ALL OF THE FOREGOING; INDUSTRIAL STEAM AND WATER SEPARATORS, HEAT TRANSFER LIQUID HEATERS; FUEL ECONOMIZERS FOR USE WITH BOILER SYSTEMS COMPRISING ESSENTIALLY A PRESSURE VESSEL, COMBUSTION STACK, HOT STRUCTURE, HEAT EXCHANGER, SOOTBLOWER, VALVES, AND THERMOMETER, AND PARTS THEREFOR
