11 Flexible plastic pipes for plumbing purposes; flexible PVC pipes; Plumbing and irrigation fittings, namely, bibbs, cocks, traps, valves, tees, wyes, adapters, unions, saddles, crosses, swing assemblies, strainers, sleeves and risers; fitted covers for irrigation sprinkler heads; dripper irrigation systems comprised of valves, backflows, pipes, tubing and emitters; water treatment equipment, namely, water filtration units; water fountains; manually-operated plumbing valves; plumbing fittings, namely, backflow prevention valves; water purification tanks; water purification and filtration apparatus