Abstract: A light and economical device for dispensing a liquid easily adaptable to bottles of standard format, called fountain or dispenser. The device is in the form of a valve cartridge whereof the opening can be controlled by simple pressure, including elements for being adapted, interchangeable, sealed and for being fixed to one or several types of bottle necks of standardized format, self-contained elements for controlling air intake when the liquid is drawn, self-contained elements for regulating the liquid flow rate, and a receiving and controlling element, securely maintaining the cartridge, and elements for easily controlling the dispensing of liquid either directly, or indirectly when the control device is delayed or when the device is integrated in another complementary system such as a cooling or heating system.