a first orifice positioned on said housing cap engaging said first step for preventing movement of said housing cap relative to the housing during {HEAD ~ removal} of said plug cap from {TAIL ~ the plug}; and 
from
a first orifice positioned on said housing cap engaging said first step for preventing movement of said housing cap relative to the housing during { HEAD ~ removal } of said plug cap from { TAIL ~ the plug } ; and
OTH OTH 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 OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH