11 Apparatus and equipment for water supply and sanitary purposes, namely, vacuum toilets, vacuum urinals, vacuum operated or vacuum enhanced sewage purification apparatus, water or liquid collection machines in the nature of thickening and dewatering machines for use in the treatment of liquids, transportation and treatment systems and installations and plants, namely, sewage treatment plants and inseparable components thereof including in the nature of toilets, discharge valves for toilets, grey water valves for toilets, faucets, grease traps, floor drains, blowers, air and liquid ejectors, vacuum pumps, water filters, additive injectors for disbursing solids and liquids for purification and sterilization purposes, sluices, waste water treatment storage tanks, separators for the cleaning and purification of liquids, and controllers and monitoring units incorporated therein; incinerators; waste water purification apparatus, installations and tanks; heating apparatus for use in the treatment of waste; wastewater treatment installations; wastewater purification units; waste water treatment tanks; apparatus for dehydrating food waste