Valve controlled fluid conducting well tool

摘要: A rotary operable shutoff valve means for use in connection and combination with fluid-conducting well tools comprising a cylindrical body large upstream bore small downstream bore, piston end engaged the keyed axial movement, an axial-extending port radially offset from axis of piston, stem rotatably having axially extending shiftable into out register upon rotation relative to body, said flat, opposing surfaces, sealing surface about therein engageable on stem, cross-sectional area being greater than thereof whereby fluid pressure urges tight pressure-sealing engagement when ports are register.