DZR Brass Easy to clean the filter Magnet Neodym, 12 gs FilterBall Magnet is a filter ball valve with an integrated magnet for collecting magnetite, suitable for heating, cooling and tap water systems. The filter and the magnet is easy to clean, just close the ball valve, unscrew the lid and remove the filter and the magnet. The valve requires no maintenance, but the installation should still be checked regularly.