11 Boiler parts, namely, safety devices, combustion controllers; Boilers, namely, electric boilers, industrial boilers, containerized boilers ; Feed water heater systems for industrial boilers comprised of atmospheric and pressurized tanks, feedwater pumps, control instruments and valving; Boiler feed water deaerators being water conditioning units and water filtration apparatus; Boiler room peripheral and auxiliary systems comprising blow down separators, surge tanks, pressurized feed water systems comprised of pressurized tanks, pumps, control instruments and valves, indicators, and heating systems; open vented feed water systems comprised of atmospheric tanks, pumps, control instruments and valves, indicators, and heating systems; steam accumulators, boiler fire-tubes, and water-tube boilers and feedwater equipment in the nature of feed water heaters, heat recovery systems, and controls for all heating and process applications; Single collection control point systems comprised of boiler control instruments, safety devices, valves, tanks, pumps, sensors, filters, softeners, and control devices to monitor and manage steam and hot water operations for industrial boilers