11 Water treatment equipment, namely, water filtration units, reverse osmosis units; water purification equipment, namely, water purification units, water purification tanks, water purification machines, water filtration and purification units and replacement cartridge and filters thereof; water distribution equipment in the nature of regulating accessories for water supply, namely, water control metered valves; fluid valves, namely, manually-operated plumbing valves, and plumbing fittings, namely valves; water drinking valves for animals in the nature of metered valves; vivarium equipment, namely, water filtering units for commercial use, water purification units, and water proportioner units in the nature of chlorinating and acidifying units primarily used for water treatment to maintain water quality, also used as a drug delivery device for animal drinking water treatment, all of the foregoing sold as a unit for water treatment; animal watering systems in the nature of mechanized waterers for use in vivariums