Gate Valve

Abstract

In embodiments, a gate valve includes a valve body including a flow passage from a first opening to a second opening, and a gate channel having a first end intersecting the flow passage and a second end delineated by a third opening. A valve cover fits over the third opening. A cap fits over a valve cover opening. In embodiments, a valve cover includes a body with a second sealing surface protruding from a first sealing surface, both around an opening of the body. A cap has a third sealing surface to mate with the first sealing surface, and a fourth sealing surface congruent to the second sealing surface. In embodiments, a valve cover cap includes a body with a first sealing surface on an end of a wall. Pin flanges each have a pin hole having a pin hole axis oriented perpendicular to a center axis of the wall.

1 - 16 . (canceled) 
     
     
         17 . A valve cover cap comprising:
 a body including a wall around an internal hollow and a center axis;   a first sealing surface on an end of the wall;   a first pin flange extending from a first side of the body;   a second pin flange extending from a second side of the body; and   a first pin hole through the first pin flange;   a second pin hole through the second pin flange,   the first pin hole having a first pin hole axis,   the second pin hole having a second pin hole axis,   the first pin hole axis and the second pin hole axis oriented perpendicular to the center axis.   
     
     
         18 . The valve cover cap of  claim 17 , wherein the wall is annular. 
     
     
         19 . The valve cover cap of  claim 17 , wherein the first sealing surface is flat and faces in a direction parallel to the center axis.