The direct meaning of reverse osmosis (RO) is the movement of water through a membrane when pressure is applied on one side of the membrane. Reverse osmosis is one of the most effective, economical technologies available for removing a range of impurities from water.

Water is stored in a diaphragm, made of a material called butyl. When there is a demand for water, the water is pushed out of the tank's diaphragm by air pressure.

In the picture, the stem at the top of the tank is where water both enters and leaves the tank. The blue cap on the front near the bottom covers a standard air valve, like the valve on a bicycle or automobile tire. This is where the air is pumped into the tank. The air valve on some tanks is in a different place, so you may have to look for it.

When the RO tank is empty of water, it should have a pressure of 5 to 10 psi air. As water is forced into the tank by operation of the RO unit, pressure inside the tank increases. Standard RO units have a hydraulic shutoff valve that stops production of water when the pressure in the tank reaches approximately 2/3 of the pressure of the tap water that supplies the RO unit. Thus, if your city water pressure is 60 psi, the RO unit will fill the storage tank to around 40 psi before shutoff. If, however, your city pressure is only 50 psi, the RO unit will stop filling the tank when the pressure in the tank reaches a bit over 30 psi. This may make it difficult to supply water with your RO unit. The reverse osmosis tank is required because RO is an inefficient process. Even with adequate water pressure feeding the system, the flow rate of filtering water is much slower than that of tap water directly from the plumbing.

Reverse Osmosis: Proven Method for Clean Water

AQUASKY has invented the leak-safe technology and applied on the stainless connector for the pre-pressurized water storage tank 18 years ago, and we are the standard of the industry for drinking water tank. We've found that reverse osmosis consistently proves to be one of the most effective ways to filter drinking water. Reverse Osmosis can remove pollutants from water including lead, pesticides, fluoride, pharmaceuticals, arsenic and much more. They can also remove chlorine to improve the taste, odor and appearance of your water. The process is fully automated, effective and simple to maintain. All RO-PLUS tanks are manufactured at our ISO 9001:2008 registered facilities. NSF listed as the highest standard for RO tank. IAPMO and CE certified for the safest pressure vessel in the market.

We also provide customized services to meet your requirements. If you require any further information, feel free to contact us.