This looks just the same as the one on my old Marea. Not sure about the pipe fittings but there is a flange showing half way down one and you may have to push down first and squeeze?before pulling?
The white screw at the bottom is a drain for water , it has to be slackened off till the water drains out and tightened back up when fuel runs out. The filter should be self priming so i dont think air will be a problem.
Hope this helps