Why don't you use this instead of the PVC
to keep the FILTER assembly in place?
The Big Bang Theory Season 2, Episode 22
through the cryocooler
or through the vacuum FILTER.
The Big Bang Theory Season 10, Episode 20
Uh, I need a new dust FILTER
Breaking Bad Season 5, Episode 11
Fine, it has
a charcoal FILTER in it.
The Big Bang Theory Season 11, Episode 12
I bought a FILTER.
Breaking Bad Season 2, Episode 10