Gate Valve,Bolt Bonnet,OS&Y Gate Valve, ASME B16.5 Flanged or Butt-Welding Ends, Bolted Bonnet, One-Piece Flexible or Solid Wedge Gate, Full Port, Outside Screw and Yoke, Integral Body Seats or Separate Seat Rings (Threaded or Welded In Place), Non-Rising Handwheel, Gearbox, or Power Actuator Operated, Non-Rotating Rising Stem, Complete with Conical Stem Backseat ...