[img:2qp5thv9]http://i727.photobucket.com/albums/ww275/jhmeg/IMG_20120426_173314.jpg[/img:2qp5thv9]
Got me beer engine hooked up, working like a charm. CAMRA approved Real Ale too, as we're sucking in air into the corny through the blow-off valve. No cask breathers here!
Funny and slightly irritating thing about this is any positive pressure in the corny at all (even from co2 escaping from the beer) with the blow-off valve closed and the tap starts dripping.