Posted 8/1/2020 21:17 (#8409733 - in reply to #8409695) Subject: RE: question on supplied air system
It is a Bullard. And I am going to say it is a Gast pump.
I doubt if there is enough to air to run an air cooler and that is prob another reason filters.
3M was never popular helmet and we have one of those in the shelf also. Last I knew parts were available but not checked in awhile. Out of sight, Out of mind, I guess.
Also the filter on the Bullard free air pump is nothing special I would guess. It is screwed on to a 1/2 in pipe that sticks up a couple feet. I should have a part #
for it. Looks like a oil filter.