Wedge gate valves differ from parallel gate valves in that the closure member is wedge-shaped instead of parallel, as shown in Figure 3-34 through Figure 3-45. The purpose of the wedge shape is to ...

They are available in large sizes to better handle thick flow ... Types of gate valves. Image Credit: thepipefittings.com Wedge-shaped gate valves use two inclined seats and a slightly mismatched ...