Gate Valve

Abstract

In embodiments, a gate valve includes a body including a flow passage from a first opening to a second opening, and a gate channel from the flow passage to a third opening, the gate channel having a central longitudinal axis and a ridge defining a perimeter of the opening. A valve cover can fit over the third opening and exert a clamping force on the ridge, the clamping force having a first force component perpendicular to the central longitudinal axis and a second force component parallel with the central longitudinal axis. In embodiments, a valve cover includes a first mating surface configured to extend over an opening of the gate valve, a first clamping section extending at a first non-parallel angle from a first side of the first mating surface, and a second clamping section extending at a second non-parallel angle from a second side of the first mating surface.

1 .- 13 . (canceled) 
     
     
         14 . A valve cover for a gate valve, the valve cover comprising:
 a first mating surface configured to extend over a gate channel opening of the gate valve, the first mating surface having a first side and a second side, the first side opposite the second side;   a first clamping section extending at a first non-parallel angle from the first side of the first mating surface; and   a second clamping section extending at a second non-parallel angle from the second side of the first mating surface.   
     
     
         15 . The valve cover of  claim 14 , further comprising a first pin flange, a second pin flange, a third pin flange, and a fourth pin flange, the first pin flange having a first pin hole, the second pin flange having a second pin hole, the third pin flange having a third pin hole, the fourth pin flange having a fourth pin hole, the first pin hole in axial alignment with the second pin hole, the third pin hole in axial alignment with the fourth pin hole. 
     
     
         16 . The valve cover of  claim 15 , further comprising a cap, the valve cover further comprising an opening, the cap having a fifth pin flange and a sixth pin flange, the fifth pin flange having a fifth pin hole, the sixth pin flange having a sixth pin hole, the cap configured to be moved into a sealing position over the opening, in the sealing position, the fifth pin flange configured to fit between the first pin flange and the second pin flange, the sixth pin flange configured to fit between the third pin flange and the fourth pin flange, the fifth pin hole configured to align with the first pin hole and the second pin hole, and the sixth pin hole configured to align with the third pin hole and the fourth pin hole. 
     
     
         17 . The valve cover of  claim 14 , wherein the valve cover has a first sealing surface and a second sealing surface, the second sealing surface protruding from the first sealing surface. 
     
     
         18 . The valve cover of  claim 17 , further comprising a gasket sized and shaped to mate with the first sealing surface of the valve cover and to extend around the second sealing surface. 
     
     
         19 . The valve cover of  claim 18 , further comprising a cap, the valve cover further comprising an opening, the cap configured to fit over the opening, around the second sealing surface of the valve cover, and onto the first sealing surface of the valve cover or the gasket. 
     
     
         20 . The valve cover of  claim 14 , further comprising a first bolt flange and a second bolt flange, the first bolt flange extending from a first side of the valve cover, the second bolt flange extending from a second side of the valve cover, the first side of the valve cover being separate and distinct from the second side of the valve cover.