Faucets; Faucet sprayers; Flexible pipes being parts of shower plumbing installations; Hand-held showers; Hand held shower heads; Hand showers; Jet nozzles for bathtubs; Kitchen sink sprayers; Shower head sprayers; Shower heads; Shower stands; Showerheads and components thereof; Water faucet spout; Water filters; Water filtration and purification units and replacement cartridges and filters therefor