11 Lighting apparatus, namely, lighting installations for use in fire protection and security lighting; environmental control apparatus and machines, namely, water filtration and purification units for domestic, commercial and industrial use; water supply installations, namely, namely, pipes being part of sanitary installations and pumping systems for potable and non-potable water collection, treatment and distribution; pipes being part of sanitary installations for sewage and other waste collection, storage, treatment, disposal, fuel storage, distribution and issue; pipes being part of sanitary installations for process water/chemical systems; pipes being part of sanitary installations for heating and cooling systems; and pipes being part of sanitary installations for hot water and steam generation and distribution sold in combination for use in lawn sprinkler systems; pipes being part of sanitary installations for spas and/or swimming pools; water softening apparatus and installations; self-regulating heating systems primarily for temperature maintenance comprising boilers, condensers, manifolds, pumps, instrumentation, valves tanks, piping, coils, cooling towers, compressors, heat pumps, and filtration systems; electric heating apparatus, namely, electrical heating tape, heating strips, and heating cable; agricultural irrigation units and components thereof, namely, valves, pipes systems comprising tanks, piping, pumps, instrumentation, manifolds, and valves , measurement and control equipment, pumps and tanks sold as components thereof; hot water pressure water tanks and parts therefor; air purification and filtration units for domestic, commercial and industrial use