Apparatus for water filtering; domestic water filtering apparatus; domestic water filtering units; drinking water filters; installations for water filtering; machines for water filtering (purifying); water filtering apparatus; water filtering apparatus for domestic use; water filtering apparatus for industrial use; reverse osmosis devices for use in water conditioning apparatus; reverse osmosis devices for use in water conditioning installations; reverse osmosis elements for domestic use in reducing the salt content of water; reverse osmosis elements for reducing the brackishness of water; reverse osmosis elements for reducing the brackishness of water for domestic use; reverse osmosis elements for reducing the salt content of water; apparatus for filtering water; apparatus for water filtering; drinking water filters; filter housings (parts of household or industrial installations); filter membranes (parts of household or industrial installations); filters for ice making machines; machines for water filtering (purifying); overpressure filters for water supply installations; water filtering installations; apparatus for water filtering; apparatus for water purification; installations for purifying water; machines for water filtering (purifying); pressurised water tanks; regulating apparatus for water apparatus; safety valves for water apparatus; safety valves for water pipes; taps for regulating water flow; water filtering apparatus; water filtering apparatus for domestic use; water filtering installations; water fountains; water mixing appliances; water outlets (faucets); water pressure reducers (regulating accessories); filters for water purifiers; installations for water filtration; membranes for the filtration of water; portable filtration apparatus for filtering water (other than machines); portable filtration units (other than machines)