Does a plug valve belong to the category of pneumatic diaphragm control valves?
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Does a plug valve belong to the category of pneumatic diaphragm control valves?
This post was last edited by ylb913 on 2017-2-7 at 13:31. A plug valve is a type of valve; the valve body itself constitutes its structure, while a pneumatic diaphragm serves as the actuator used to control the opening and closing of the valve. Plug valves have a 90-degree angular travel, and for automatic operation, cylinders (pistons) are typically used.
A pneumatic diaphragm control valve is one whose actuator is a pneumatic diaphragm actuator, while a plug valve refers to the throttling mechanism in its valve body.
A plug valve is a type of valve that uses a plug with through-holes as the closing element; this plug rotates along with the valve stem to carry out the opening and closing actions. The plug valve opens and closes quickly with low fluid resistance. Since the movement between the sealing surfaces of the plug valve has a wiping effect, and full opening completely prevents contact with the flowing medium, it can generally also be used with media containing suspended particles. In recent years, as one of the earliest types of valves to be used in history, it has not been replaced by valves such as ball valves; instead, its popularity in the market has continued to grow. Plug valves are commonly used to stop the flow of a medium, and can also be used for distributing the medium (three-way plug valves).
Please note the title: it’s a regulating valve, not a control valve. Secondly, the valve body and the actuator are two distinct components; the plug valve belongs to the valve body category, which indicates the general classification of the valve body, while the pneumatic diaphragm falls under the actuator category. The same valve body category can be equipped with actuators of different categories.
“A \"pneumatic diaphragm control valve\" refers to a control valve whose actuator is of the pneumatic diaphragm type. “A “ball valve” is a type of control mechanism for control valves.
A plug valve is just a type of valve; pneumatic diaphragm control refers to the power system of the valve. Gate valves, ball valves, plug valves, and so on can all be controlled using pneumatic or electric means
“A “plug valve” is a type of control mechanism for control valves
One is the valve body, and the other is the entire control valve; they are related to each other