a damn shame that no one seems to give a shit about masking up amidst an airborne pandemic. guess it's gonna be up to me to try and make proper PPE fashionable by serving cute looks with my new mask (selfie ec)
it looks like a 3M 604 exhalation valve filter will fit on it with a little modification, so the PD-100 can be given proper source control! also, it looks real good with the anorak vest that i waterproofed with beeswax. very post-apoc chic. (selfie ec)
I was right, adding an exhalation valve filter was pretty easy. A 3M 604 with one of the mounting hooks broken off and a bit of fishing line, and it's good to go. Now all I need is an o-ring to put around the base of the port cover and this will be fully sealed for source control (selfie ec)
O-ring acquired. It seems to hold up with minimal leakage under an impromptu positive pressure test, so I think I'm all set.