That's fine, the only issue is potentially locking the impeller with the gas, but that's why it's mounted vertically and should pose no issue.

The burp hole allows for volume specific volume before leaking out, say if you added too much gas for the venturi can handle.

This prevents the entire tube from filling up and knocking off the suction cup and having the entire reactor come loose.

You can add several such burp holes in the side of any such reactor, then use those air line plugs to add or remove the holes to get the desired level or effect.


Regards,
Tom Barr