There is a psi release valve on this gun. Instead of the push button that never works there’s a screw type that you loosen. But you don’t need it to bleed it. After pushing the rod in, pull it back out, torn it a tad until it won’t go in and with the entire tube case loosened just a tad push like hell. Then give the rod a slight turn until it goes back in and pull the trigger a sec until grease comes out. Now tighten the entire grease case and you’re primed and ready to go. After doing this a few times it becomes second nature and not as complicated sounding.

Thanks bro

It does have a pressure relief, you unscrew that relief valve and screw it back in. Lets the air out.