Description

Mud Gate Valve- 2in

1) A mud saver valve connected to the lower end of a kelly allows down flow of mud or other drilling fluid when pumps are actuated to circulate drilling fluid, but closes when the pumps are off, thereby retaining drilling fluid thereabove in the kelly to prevent loss of fluid when the kelly and valve are disconnected from the drill pipe.

2) The valve includes a tubular body and a top sub screwed therein.

3) A replaceable seat is carried by the lower end of the top sub.

4) A poppet type valve closure is urged upwardly against the seat by a helical spring strong  enough to close the valve against the weight of drilling mud in the kelly.