11 components for steam heating installations,namely drain cocks and purge valves; air conditioners; plumbing fittings, namely, mixer taps; hot water heaters; hot water systems comprising of manifolds, steam traps, piston valves, strainers, separators, check valves, air vents, liquid drainers, flow indicators; filters for domestic and industrial use not being parts of machines; ice making machines; control valves for gas and hot water heating systems control and safety devices for gas appliance, namely, control valves, pressure reducing valves; control devices for water or gas appliances, namely, control valves, pressure reducing valves