In an RO (Reverse Osmosis) water purifier system, the pressure tank plays a crucial role in ensuring a steady and efficient supply of filtered water. It is typically a cylindrical or bladder-shaped container that stores purified water under pressure, allowing for a constant flow when needed. Inside the tank, there is a rubber bladder or diaphragm that separates the water from the air. As the RO system filters water, it fills the tank, and the air pressure compresses the bladder. When a faucet is turned on, the stored pressurized water is pushed out of the tank, providing a consistent flow without the need for the system to run continuously. The pressure tank not only helps maintain a steady water supply but also reduces the strain on the RO system by preventing constant filtration, which extends the system’s lifespan and efficiency.