The Giant Spinning Fan of Death Is Not Even Moving at Alls

So your adventurer, a is in a tunnel. And behind you is a giant spinning fan of death. Ok, so if air's being pulled, that door slam shut,. and nothing, not even your mighty kick, will open it. So since there's no differentials in air pressure, your kick opens the door. You continue down the hall. I'm going to skip the cobolt encounter. It is ers ugbear. As you continue down the tunnel, you see a door on your left. Now this door is the other valve. This is the valve that is the bipass valve. If you were to kick down door, whit, you can do. Oha