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