Yeah, mine's mechanical too. I'll be adding a filter to make sure I don't gum up that flowmeter!
I'll be using a simple copper mesh screen for my PC, and I'll probably do the same with my testbench.
Linky!
http://www.twpinc.com/twp/jsp/produc...pe=3&page=data
These are 2" by 2", but you can fold/bend them into a cone, trim the edge, JBWeld a flange to it, and slip it inside of a 1/2" NPT fitting.
Follow the manufacturer specs to size the filter mesh.
(Thank you
Weblinks!)