Desalination units; Feed water heaters ; Filtering units for commercial, industrial and/or agricultural uses and/or, producing potable water for domestic use; Flow restrictors for reverse osmosis water purification units; Industrial-water purifying apparatus; Regulating accessories for water supply, namely metered valves; Water desalination plants; Water distillation units; Water distilling units; Water filtering units for domestic, commercial, industrial and/or agricultural use;; Water filte...