Faucets; Air valves for steam heating installations; Cocks for pipes and pipelines being parts of sanitary installations; Disinfectant apparatus for dispensing solutions into water-pipes for sanitary installations; Heating installations; Heating systems for residential and commercial buildings comprised of boilers, valves, pipes, manifolds, control panel switches, and electrical wire, all sold as a unit; Mixer faucets for water pipes; Mixer taps for water pipes; Pipes being parts of sanitary facilities; Plumbing fittings, namely, cocks; Plumbing fittings, namely, couplers; Plumbing fittings, namely, drains; Plumbing fittings, namely, faucet filters; Plumbing fittings, namely, spouts; Plumbing fixtures, namely, shower mixers; Regulating accessories for water supply, namely, metered valves; Safety accessories for gas pipes, namely, flashback arrestors and reverse flow check valves; Separators for the cleaning and purification of liquids; Shower heads; Taps for pipes and pipelines being parts of sanitary installations; Washers for water taps; Water control valves for faucets; Water fountains