Furthermore, {TAIL ~ the skirt valve} can have a thicker first portion that is coupled to a stem or post of the cartridge, and a thinner second portion that allows for {HEAD ~ greater flexibility} of the valve 
Furthermore , { TAIL ~ the skirt valve } can have a thicker first portion that is coupled to a stem or post of the cartridge , and a thinner second portion that allows for { HEAD ~ greater flexibility } of the valve
OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL 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 OTH OTH OTH