Release Pressure Safely

pressure in here 7.5 PSI pressure I don't want to just release this and let the pressure come out through there I'm going to turn this little valve it's going to release the pressure out through the valve and then I can open up the gun right there now there are multiple options you can use this is what we call a siphon feed Cup right here this is what I predominantly use or you can use a gravity feed Cup right here Gravity meaning grabby is what's