Researching for the lid/poof designs I found this:
In there Koen says:
You want 2 functions, filling lid and puffing lid…
Solution:
1: make one lid that can be closed tight, the easy way, no springs…
2: on that lid, or another place, make an overpressure valve that never will be opened unless you have a “puff”
On stationary designs they use aluminium foil rupture disks, but i am sure a larger tennis ball will work to
A larger , heavy rubber ball, 4" size, on top of a 4" pipe as a blow off valve maybe ?
That might be an option if I can’t get the lid to seal good enough while still being loose enough to POOF.