The control valve includes a valve mechanism within a housing, and {HEAD ~ the valve mechanism} comprises {TAIL ~ a piston} which is associated with a solenoid 
comprises
The control valve includes a valve mechanism within a housing , and { HEAD ~ the valve mechanism } comprises { TAIL ~ a piston } which is associated with a solenoid
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 OTH OTH OTH OTH OTH OTH