Direct flow reverse osmosis system works by applying pressure to a water source, pushing the water through a semi-permeable membrane to remove impurities such as minerals, bacteria and even viruses. The system is ideal for use in areas where clean and safe drinking water is scarce. Water Purifier Machine, Freestanding Water Purifier , Smart Water Purifier , Home Water Filtration ,Water Softener For Home . Available in a variety of water capacity models from 50GPD to 800GPD, Angel undersink RO water purifier is ideal for any size home. Undersink RO water purifiers are easy to install and maintain, giving homeowners peace of mind. The product will supply to all over the world, such as Europe, America, Australia,Cyprus, St. Petersburg,Uruguay, Albania.Reverse osmosis water filtration systems come in different sizes and configurations to suit individual needs. Some reverse osmosis water filters can be installed under the sink, while others can be connected to the mains water inlet. The installation process is simple and requires minimal maintenance. Filters should be replaced regularly to ensure optimum filtration.