Tanks work on the same principle as well pressure tanks but on a smaller scale. They are also hydropneumatic water storage tanks designed to provide pressurized water without the aid of a booster pump. They protect the reverse osmosis unit overall by ceasing water production when the tank capacity is full. Once the pressure tank’s psi reaches 2/3 of the water line pressure, the ASO valve will shut the system. This protects the RO membrane from being in constant use and prevents the system from perpetually sending wastewater to the drain. Reverse osmosis tanks are made of rolled steel but internally lined with an inert material called butyl. This protects the purified water from making contact with any metallic surface.
RO tanks come in a variety of sizes, but in general, they are designed to fit snugly beneath your kitchen counter alongside your reverse osmosis system. Reverse osmosis takes a long time to purify water, so RO storage tanks also act as a simple collection chamber for the water so you can access it at your convenience. If you want to increase your reverse osmosis system’s tank capacity, the addition of a second tank will expand your water storage. You can also add a pump to the water’s feed pressure. The reverse osmosis system will stop producing water when the tank’s internal pressure reaches 2/3 of the line pressure. So, if you have low water pressure running through your reverse osmosis system to begin with, your tank will shut off much sooner. Increasing the feed pressure will actually increase how much water your storage tank can hold. Use a Pressure to monitor the air pressure within your RO tank.
