Peace be upon you A water tank, maybe 5 thousand liters or more. The tank has been in use for 17 years with me, and it is the house's tank. I just installed a new one. Note: You can fill the tank up to the middle of the tank Because after the middle, it leaks from the holes of one of the screws, as shown in the pictures (the screws are slightly above the middle). It is worth noting that the tank is large, and if you fill it or adjust the float, filling it to the middle will not cause leakage.