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What is the function of the flow guide hole in a wafer gate valve?
Release Date:
2025-07-31
The flow guide hole of the wafer gate valve is a key design element, mainly used to optimize fluid control, protect valve sealing, and adapt to harsh working conditions.
The flow guide hole of the flat gate valve is its key design element, mainly used to optimize fluid control, protect valve sealing, and adapt to harsh working conditions. Its functions can be summarized in the following core aspects:
Balance pressure to prevent water hammer phenomenon: During valve opening and closing, the flow guide hole provides a channel for the medium to slowly balance pressure, avoiding sudden upstream pressure rises or drops that cause water hammer impact, thereby protecting pipelines and equipment from damage.
Reduce axial force and lower operating resistance: By balancing the pressure difference before and after the gate plate, the flow guide hole significantly reduces the axial force required for valve operation, making it easier and less labor-intensive to operate.
Improve fluid flow characteristics: The flow guide hole directs fluid smoothly through the valve, reducing turbulence and vortices, lowering flow resistance, and enhancing transport efficiency.
Prevent impurity deposition and assist sealing: In media containing solid particles (such as crude oil or natural gas), the flow guide hole maintains flow to avoid impurity accumulation; simultaneously, the medium flow automatically flushes the sealing surface, removing impurities and maintaining sealing reliability.
Support valve cavity pressure relief and pipeline cleaning: The flow guide hole promotes pressure release inside the valve cavity, preventing damage to the sealing surface, and is suitable for pigging operations in long-distance pipelines, ensuring internal pipeline cleanliness.
Extend valve service life: By protecting the sealing surface from direct erosion and reducing friction, the flow guide hole design enhances the valve's durability under high pressure and impurity-containing environments.
In summary, through pressure control, flow optimization, and maintenance functions, the flow guide hole enables the flat gate valve to perform efficiently and reliably in oil and gas transportation and harsh working conditions.
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