Ours was a brand new camper and the filter failed. I cut it out, bypassed it and use an outside filter that I replace every year. Simple and no worries of greasing the o ring or tightening anything. In line water filter OUTSIDE the camper.
Chuck and Joanne
2014 Flagstaff Super Lite Classic 27RLWS Emerald
2013 Dodge 2500 4x4 Laramie Crew
Equal-i-zer 1200/12,000 4-point WDH