This device allows you to automatically adjust, control and keep constant the nitrogen pressure of the gas springs connected each other in the mold. The device, connected to the nitrogen tank and to the gas springs, checks (by means of an electric pulse) the pressure of the gas springs when the mold is open, in the rest phase of each cycle, regulating the pressure in order to keep it constant. The device is supplied with a digital control panel, which allows the constant display of the real pressure, the setting and management of the pressure and the display of any malfunction alarms.
