[ Apparatus for heating, steam generating, refrigerating, ventilating, water supply and sanitary purposes, namely, steam generators, electric space heaters, and refrigerators; non-automatic separators for steam heating systems, namely, separators for the purification of gases in gas heating systems; heating elements for central heating, namely, expansion vessels for central heating, namely, expansion vessels that serve as a reservoir to collect heated water in closed water heating systems; venting valves being integral component parts of water heaters for heating domestic hot water and hot water systems; mixer taps in the nature of faucets for water pipes; control and safety accessories for water heaters, namely, safety valves sold as integral component parts of water heaters; apparatuses for heating, steam generating, refrigerating, ventilating, water supply and sanitary purposes, namely, intermediate hot water tanks, dirt collectors for furnaces for the cleaning and purification of air, air separators for the separation of gas bubbles in water mixtures for the purpose of purifying the water for heating and cooling systems, safety valves for flow shutoff sold as integral component parts of heating and cooling systems comprised primarily of electric heaters and air conditioners, and wall brackets for expansion vessels sold as integral component parts of electric, gas, and water heaters; apparatuses for heating, steam generating, refrigerating, ventilating, water supply and sanitary purposes, namely, shut off and discharge valves for expansion vessels sold as integral component parts of water heaters, digital pressure gauges to measure gas admission pressure sold as an integral component part of gas water heaters, water shock arrestors used to absorb water shocks in water feeding pipes sold as integral component parts of water supply purification units; apparatuses for heating refrigerating, and ventilating, namely, diaphragm rupture detectors used to detect diaphragm ruptures inside expansion vessels in heating and cooling systems sold as integral component parts of heating and cooling systems primarily comprised of electric, gas, and water heaters and air conditioners; control equipment for water or gas appliances as well as for water or gas pipes, namely, safety valves for flow shutoff in electric and gas heater-based heating systems and air conditioner-based cooling systems; apparatus for heating, namely, shut off and discharge valves for expansion vessels sold as integral component parts of water heaters; apparatus for heating, namely, digital pressure gauge to measure gas admission pressure sold as integral component parts of gas heaters; boiler pipes for heating installations; taps being faucets for pipes ]

Packing and insulating materials; stopping materials, namely, packing material for forming seals; non-metal reinforcing materials for pipes, namely, pipe insulation; insulating materials, namely, insulating compositions to prevent the radiation of heat; [ pipe couplings, not of metal; ] [ pipe fittings, not of metal; ] [ sound proofing materials, namely, sound barrier panels for use along highways; ] non-conducting insulating materials for retaining heat