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