The present invention relates to valve system ports, and particularly to those ports used in refrigeration systems for charging and evacuating {HEAD ~ the refrigerant system} with {TAIL ~ refrigerant} 
with
The present invention relates to valve system ports , and particularly to those ports used in refrigeration systems for charging and evacuating { HEAD ~ the refrigerant system } with { TAIL ~ refrigerant }
OTH OTH OTH 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 HEAD REL TAIL TAIL TAIL TAIL TAIL