The present invention is a flow control device for controlling the actuator speed in the existing volume booster, a filter for removing impurities from the fluid entering the volume booster, a pilot regulator that can control the pressure of the fluid going out to the discharge part, and a volume booster pilot signal ON- It relates to an all-in-one volume booster equipped with a solenoid valve that can be turned off. The all-in-one volume booster of the present invention has an input port (AA1) for receiving a fluid, an output port (AA2) for introducing a fluid into the actuator, an exhaust port (AA3) for discharging the fluid to the outside, and the input port (AA1) A housing (A) including a lower chamber (AA4) receiving the fluid introduced through the first flow path, and an upper chamber (AA5) receiving the fluid introduced through the input port (AA1) through a second flow path (A) ); a filter unit (B) provided in the housing (A) and removing impurities from the fluid introduced into the input port (AA1); an operation unit (C) provided in the housing (A) and operated by the fluid pressure difference between the lower chamber (AA4) and the upper chamber (AA5); and a first control unit (D1) for adjusting the flow rate of the fluid introduced into the input port (AA1), and a second control unit (D2) for adjusting the flow rate of the fluid discharged to the outside through the exhaust port (AA3). It may be configured to include a flow rate control unit (D).
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