11 Water supply and distribution installations, namely, plumbing fittings, namely, water taps with or without aeration, valves, and flow straighteners in the nature of water faucets and water taps with or without aeration; water supply installations, namely, water flow regulators, flow straighteners with or without aeration in the nature of faucets, shower heads and flexible sanitary pipes being part of shower, bath, and sink plumbing installations with and without aeration, plumbing fittings in the nature of non-return valves, plumbing fittings in the nature of flow control valves, water flow regulators, vacuum release safety valve breakers used to interrupt water backsiphonage, water filters; components and spare parts therefor included in this class, namely, faucets, flexible pipes being parts of bath, shower, and bath plumbing installations, and plumbing fittings in the nature of faucet stream straighteners with and without aeration; sanitary apparatus and installations, namely, plumbing fittings, namely, flow straighteners in the nature of water faucets and water taps with or without aeration, as well as components and spare parts thereof included in this class, namely, plumbing drains and flexible pipes being parts of bath, shower, and bath plumbing installations; sanitary fittings, fittings for sanitary installations, components, and spare parts for all the aforesaid goods included in this class, namely, faucet aerators with or without aeration, faucets, shower heads, hand showers, wall-mounted showers, kitchen sink sprayers, water filters, plumbing fittings in the nature of spouts and valves, plumbing fittings in the nature of faucet stream straighteners with or without aeration, and plumbing fittings in the nature of swivel and extractable spouts for sanitary tapware as well as components and spare parts for the aforesaid spouts included in this class, namely, plumbing valves and check valve cartridges; plumbing fittings in the nature of diverters to select water flow between tub or shower head; plumbing fittings in the nature of diverters to select water flow between kitchen side spray or faucet; plumbing fittings in the nature of non-metal valve connectors