A portion of the cap defines a large cylindrical cavity having a channel formed therein which is positioned so that an O ring provides a substantially water tight seal when the filter cartridge is in {HEAD ~ an operative position} in {TAIL ~ a manifold} 
in
A portion of the cap defines a large cylindrical cavity having a channel formed therein which is positioned so that an O ring provides a substantially water tight seal when the filter cartridge is in { HEAD ~ an operative position } in { TAIL ~ a manifold }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL