Abstract: Quantity of fluid can be more precisely controlled without disassembling the valve by an automatic flow control valve, which can be quietly operated and repaired and maintained in simple and easy manner. In the control valve, a valve body has a fluid channel and a chamber, which are formed in the valve body and communicate with each other. A diaphragm is disposed in the chamber and has a fluid channel switching shaft connected to one surface thereof. A flow control member is assembled with the valve body and extends toward the fluid channel. A fluid transfer hole communicating with an entrance port is formed at an upper portion of a side surface of the chamber, so that an opening degree of the fluid channel can be automatically controlled by the fluid channel switching shaft connected with the diaphragm when the diaphragm is operated by pressure of the fluid transferred through the fluid transfer hole.

Abstract: Quantity of fluid can be more precisely controlled without disassembling the valve by an automatic flow control valve, which can be quietly operated and repaired and maintained in simple and easy manner. In the control valve, a valve body has a fluid channel and a chamber, which are formed in the valve body and communicate with each other. A diaphragm is disposed in the chamber and has a fluid channel switching shaft connected to one surface thereof. A flow control member is assembled with the valve body and extends toward the fluid channel. A fluid transfer hole communicating with an entrance port is formed at an upper portion of a side surface of the chamber, so that an opening degree of the fluid channel can be automatically controlled by the fluid channel switching shaft connected with the diaphragm when the diaphragm is operated by pressure of the fluid transferred through the fluid transfer hole.