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