A service valve for {HEAD ~ a refrigerant system} comprising {TAIL ~ a valve body} and a system port 
A service valve for { HEAD ~ a refrigerant system } comprising { TAIL ~ a valve body } and a system port
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH