Hi, I have a question. I have worked with a ventilator many times before but I have never filled it myself. The procedure is clear to me. I feel the device with brake fluid and compressed air. Then I connect it to the car, set the working pressure and open the valve on the hose. Then I escape. Now I have a question how to get the air into the device. I have a compressor that is set to 8 bar. At the compressor is then the hose with clutch. But do I need anything else between clutch and vent? When does the device know it’s full? does it have an overpressure valve or something? Didn’t find a precise description of this venting device I want to get.