Lubricating apparatus 1 including a manually operated valve in {TAIL ~ the pressure conduit} for closing the pressure conduit to {HEAD ~ the passage} of fluid and gas therethrough 
Lubricating apparatus 1 including a manually operated valve in { TAIL ~ the pressure conduit } for closing the pressure conduit to { HEAD ~ the passage } of fluid and gas therethrough
OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH