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china soft seated gate valve price introduces the movement mode of the gate valve

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china soft seated gate valve price introduces the movement mode of the gate valve

Author:
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Time
2021/10/25
The gate valve of the gate valve moves linearly with the valve stem, which is also called the rising stem gate valve. Usually there is a trapezoidal thread on the lifting rod, through the nut on the top of the valve and the guide groove on the valve body, the rotary motion is changed into linear motion, that is, the operating torque is changed into operating thrust.

Do you know how the gate valve moves? Follow the editor of china soft seated gate valve price for a simple understanding!


The gate valve of the gate valve moves linearly with the valve stem, which is also called the rising stem gate valve. Usually there is a trapezoidal thread on the lifting rod, through the nut on the top of the valve and the guide groove on the valve body, the rotary motion is changed into linear motion, that is, the operating torque is changed into operating thrust. When the valve is opened, when the lift height of the gate is equal to 1:1 times the valve diameter, the fluid passage is completely unblocked, but this position cannot be monitored during operation. In actual use, the apex of the valve stem is used as the mark, that is, the unmovable position, as its fully open position. In order to consider the lock-up phenomenon due to temperature changes, it is usually opened to the apex position, and then back 1/2 to 1 turn, as the position of the fully open valve. Therefore, the fully open position of the valve is determined by the position of the gate. Some gate valve stem nuts are set on the gate, and the rotation of the handwheel drives the rotation of the valve stem to lift the gate. This kind of valve is called a rotating stem gate valve or a dark-stem gate valve.
The above is the editor of china soft seated gate valve price: a brief introduction to the relevant knowledge about the movement of the gate valve.