The regulator tank is like a capacitor, which uses the air bag to compress the air to ensure a certain pressure. Water tank should have automatic water supply device, water from the bottom or basement pump room with a special water pipe to the roof tank, mounted on the float ball valve can automatically water.
The pressure regulator has a relatively thick by-pass pipe (DN80~DN150) directly connected to the water tank and the spray and fire hydrant pipes, and the two thick pipes supply water to the spray and fire hydrant pipes respectively in the early stage of the fire. Note that the hydrant pipe is directly connected to the nearby ring pipe, and the spray is from the roof special pipe to the water inlet end of the wet alarm valve in the basement.
When the pressure of the fire pipe network (spray, fire hydrant) is higher than the set (design value), the booster pump automatically stops running.
When the pressure of the fire pipe network (spray, fire hydrant) is lower than the set (design value), the booster pump will automatically start.