Anix Gate Valves

Gate valves

A gate valve is designed for a fully open and or a fully closed service. They act as an isolating valve since its only function is either to stop or to let the flow go through. It allows minimal dirt from entering the pipe.  Gate valves have 2 main parts which are parallel and wedge-shaped. For the parallel shape, it’s a flat gate valve with 2 parallel seats that has a sharp edge at the bottom. The wedge shape valve has 2 inclined seats but the gate tends to mismatched. 

There are 3 types of gate valves: the solid taper wedge, the flexible wedge, and the split wedge or parallel disk valve.  A solid tape wedge is the most common.  Due to its simplicity and strength, it can be installed in any position. It’s good for all types of fluid, but this type of design does have some leakage. A flexible wedge is a one piece solid disk with a cut around the perimeter, which is good for thermal binding. It has better seat alignment which helps prevent leaks and are mostly used in steam systems. A split wedge has 2 discs and holds together with a special mechanism which allows a disc that’s out of alignment to adjust back into place while the other disc holds up everything. The parallel disk have 2 discs that are spring loaded.They are mostly used in non-condensing gasses and liquids at normal and high temperatures without the valve being affected.