A slide valve 3 including {HEAD ~ a groove} in {TAIL ~ said guide member} for receiving an end of said support column 
in
A slide valve 3 including { HEAD ~ a groove } in { TAIL ~ said guide member } for receiving an end of said support column
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH