I am trying to connect my ryobi electrical pump to the valve that you put air into to pump up your tank for the piston. I can’t get my pump to pump into it though, and I don’t know what to do. Other people need the pump, and our team need it to, so we thought that we can buy a pump for us, but it doesn’t work. It pumps air into the valve, but nothing into the tank.
The image I’ve added is the one we have.