{HEAD ~ The slide valve} includes {TAIL ~ a pre loaded spring}, capable in the absence of other force of moving the slide valve to its closed position to lock the member against movement 
includes
{ HEAD ~ The slide valve } includes { TAIL ~ a pre loaded spring } , capable in the absence of other force of moving the slide valve to its closed position to lock the member against movement
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH