lolzz...if i had an air compressor I'd use it!
I was only comparing because when i tested the previous 'kaabli' fuel filter, one could easily blow air into it through the 'in' side. Easily. And one could also hear a metallic ball in it (valve probably) when shaken.
The new filter has neither of these characteristics. So i have to make sure it really is something normal before I install the new piece.