Adapter means for a valve reseating tool

Claim 1

An adapter means for a gate valve reseating tool of the type utilized in refinishing the opposing seating surfaces of a high pressure gate valve after the operating components of the valve have been removed from the body thereof, said valve body having a top portion of generally circular configuration, said adapter means comprising: an adapter member for mounting on the top portion of said valve body, said adapter member being configured to closely engage at least one surface of said top portion to positively locate said adapter member relative to said valve body and prevent translational movement between said adapter member and said top portion of said valve body in a predetermined plane during operation of said tool; said adapter member having a generally planar top surface with a recess therein, and an opening extending from the bottom of said recess to the bottom extent of said adapter member through which the reseating tool extends, said predetermined plane being parallel to said top surface; said recess being generally circular in shape and having a peripheral wall concentrically located with respect to said generally circular top portion of said valve body; a base plate having an opening therein, said base plate being generally circular in shape so as to be snugly received in said recess, while permitting manual rotational movement of said base plate relative to said adapter member; means mounted on said base plate for pivotally supporting said tool about an axis extending parallel to said base plate with said tool extending through said opening into said valve body; and, means for clamping said base plate to said adapter member in said recess to prevent relative rotational movement after said manual rotational positioning has been completed, to hold said base plate fixed during operation of said tool.