Solid one piece cast body in corrosion resistant stainless steel.  Compact wafer configuration to Tappi standard face to face.  Designed to handle dense mixtures of stock and slurries. The shearing action of the knife gate cuts through solids and cleans the seat as it closes.  Smooth flow--non-clogging FULL PORT design.  Gate and seat are machined and fitted to provide shut off in one direction.  Bonnetless, outside screw and yoke, non-rising handwheel, rising stem