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A gate valve is a valve designed with the use for getting straight-line flow of fluid with minimum restriction. The goal can be realized by raising a gate or a wedge out of the fluid path. It is necessary to remember that the gate valve can not be used to regulate the flow of fluid. A GB wedge gate valve is the gate valve equipped with a wedge based on the requirements of GB standard. The GB wedge gate valve can be used for the pipelines to connect or cut off the flow of the media under various working conditions including chemical engineering and thermal power station.
The design of GB wedge gate valve conforms to the GB standard. When the valve is operated, the pressure and the working temperature should be adjusted to a moderate level. The norminal pressure can be adjusted between 1.6 to 16.0MPa. The GB wedge gate valve can be made of various materials. The body and the bonnet of the valve can be made of carbon steel, Cr-Mo steel and so on. The disc and the seat of the valve can be made of carbon steel with hard alloy or stainless steel. The hand wheel of the valve can be made of forged cast iron. Therefore, it can be seen that various parts of GB wedge gate valve can be made of various materials for different applications. When the body and the bonnet are made of Cr-Ni-Ti Steel, the medium of the valve can be nitric acid, and when the body and the bonnet are made of Cr-Ni-Mo-Ti Steel, the valve is suitable for acetic acid.
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