Tanks of metal; storage tanks of metal; tanks of metal for the storage of water, compressed gases, liquefied gas, water, wastewater, effluent, and/or fuel; tanks of metal for the storage of sewage; tanks of metal incorporating pumps for use in dispensing fuel, oil, sewage, urea solutions, wastewater, effluent or water; parts and fittings for the aforesaid goods included in the class

Apparatus and installations for water and sewage treatment; water supply apparatus and instruments; water, wastewater, effluent and sewage conduits and installations; apparatus for the treatment of wastewater, rainwater, storm water, sewage and effluent; rotating biological contactor apparatus; sewage, wastewater and effluent treatment plants; liquid separators; filter apparatus; grease separators and digesters; parts and fittings for all the aforesaid goods