The valve allows you to control the rate of water flow from the tank. By adjusting the valve, you can increase or decrease the water supply to meet specific requirements or prevent wastage.
It also enables you to isolate the water tank from the connected plumbing system. This isolation is useful during maintenance or repair work, as it allows you to stop the water flow and work on the tank or associated pipes without affecting the entire water supply. In the event of a leak or emergency, the valve can be closed to stop the water flow from the tank, preventing further damage or flooding.