Under normal water pressure the water filtration system will immediately visually exhibit {TAIL ~ a substantial leak} if the filter cartridge is coupled to the manifold of {HEAD ~ the water filtration system} in the operative position without the O ring being positioned in the large cylindrical cavity 
Under normal water pressure the water filtration system will immediately visually exhibit { TAIL ~ a substantial leak } if the filter cartridge is coupled to the manifold of { HEAD ~ the water filtration system } in the operative position without the O ring being positioned in the large cylindrical cavity
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH