Hello
I had a question about pneumatic system. If I use a pump like the one in this example
https://www.amazon.com/Franklin-Sport…+with+hose&qid=1591742100&s=sporting-goods&sr=1-7
to inflate a balloon (the balloon will move a part of my robot like a joint) by pushing the pump down. Then I pull the pump up will the balloon stay inflated or will it deflate.
Thank you
Kingofjong