The valve 1, wherein {HEAD ~ said latching means} define {TAIL ~ a held position} of said counterholder in said housing 
define
The valve 1 , wherein { HEAD ~ said latching means } define { TAIL ~ a held position } of said counterholder in said housing
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH