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