This is a new slide valve arrangement, it includes {HEAD ~ a housing} having a longitudinal axis and {TAIL ~ a disc valve} or gate movable by external hydraulic or mechanical actuator 
having
This is a new slide valve arrangement , it includes { HEAD ~ a housing } having a longitudinal axis and { TAIL ~ a disc valve } or gate movable by external hydraulic or mechanical actuator
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH