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The working principle of the soft-sealed gate valve
Soft-sealed gate valves are a type of valve that uses soft materials such as rubber for sealing, in order to cut off the flow of media in pipelines or to regulate the flow rate. The core principle of this type of valve is to utilize the deformation of the gate plate to compensate for any errors in the sealing surface, while also providing features such as corrosion resistance and leak prevention.
**Sealing Principle:** The gate plate is manufactured using an integral rubber-laminated process, which utilizes the elastic deformation of the rubber to compensate for any angular deviations in the sealing surface, ensuring a tight seal. Some models (such as the encrypted soft-sealed gate valve) also feature a flat-bottomed valve seat, which helps to reduce the accumulation of impurities and enhances the sealing performance.
**Structural Features of Soft-Sealed Gate Valves:**
- **Gate Plate Types:** There are rigid gate plates (with an integral structure) and elastic gate plates (capable of slight deformation); the latter type can help to mitigate sealing issues caused by manufacturing errors.
- **Corrosion Resistance:** Both the inside and outside of the valve body are coated with non-toxic epoxy resin to prevent corrosion and rusting of the media.
- **Leak Prevention Technology:** Some models are equipped with three O-rings or a leak-free transmission system, ensuring no external leaks during the opening and closing of the valve.
**Application Scenarios for Soft-Sealed Gate Valves:** These valves are suitable for use in various industries, including water supply, sewage treatment, petrochemicals, and power generation. They are particularly ideal for applications that require anti-theft and leak prevention measures, such as in terminal control systems using encrypted soft-sealed gate valves.
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