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Now ‘parallel-slide gate valve’ is a global trend.
The sliding action of the parallel slide gate valve sets it apart from traditional compression valves as it eliminates the formation of notches or indents on the sealing surfaces. This unique mechanism leads to improved tightness of the disc against the seat-ring, resulting in enhanced durability of both the discs and the seat sealing surfaces.
The parallel-slide gate valve offers a unique feature that allows for the thorough cleaning of the seats during the closing action. This cleaning function ensures that any impurities or tendencies on the seats and discs are promptly eliminated, resulting in a sealing contact that is completely free from undesirable particles. Additionally, this cleaning action serves to reduce seat bearing stress, guaranteeing a long lifespan for the valve.
Moreover, the wide flat seating design of the valve plays a crucial role in minimizing the impact of minor damages on the surface. As the sealing takes place over the entire surface, any minor damages or imperfections become inconsequential. This feature ensures that the valve maintains its optimal functionality and performance even in the presence of minimal surface flaws.
In summary, the parallel-slide gate valve's cleaning function and wide flat seating design offer significant advantages. These features not only eliminate impurities and ensure a clean sealing contact but also reduce seat bearing stress and enhance the valve's overall durability.
The seating of the valve is designed to be leak-tight without the need for any additional power or a sudden surge of torque. The ingenious valve design achieves this sealing effect through sliding, rather than compression. Consequently, the valve operates with low energy requirements and doesn't need high amounts of energy to operate when opening. This innovative valve technology helps to increase efficiency while also reducing energy consumption.
Compared to the wedge type, the parallel slide gate valve requires a smaller actuator size and typically does not require hammering or impacting hand-wheels.
Operating at low torque levels not only reduces stress and fatigue on the trim, but also offers several additional advantages. One key benefit is the extended lifespan of the trim, ensuring it remains in optimal condition for a longer period of time. Moreover, this low torque operation significantly enhances the reliability of the trim by minimizing the risk of leaks. Overall, opting for low torque operation is a strategic choice that promotes durability and leak-tight performance.
The thermal expansion coefficient differences in materials are not a concern when the valve is closed, and the exact position of the stem is not critical. This means that there are no issues with the actuators being stopped by general position switches.
The occurrence of a potential jam caused by body contraction in wedge gate valves is something that can never happen in parallel slide gate valves. This means that parallel slide gate valves offer greater reliability and efficiency because they are not susceptible to this type of issue. So, if you are looking for a valve option that is dependable and long-lasting, a parallel slide gate valve is definitely worth considering.
The successful closing of wedge gate valves requires that the wedge is supported by positioning guides to keep it aligned during operation under high-flow pressure conditions. However, the guides are typically not made of hard materials and are subject to wear and tear, often leading to obstruction or jamming which can result in valve failure over time.
The problems of solid wedge gate valves:
Thermal binding can cause a malfunction in the opening of a disc. To generate similar content, we can rephrase it as: When discs are subjected to thermal binding, there is a possibility that the disc opening may experience a malfunction.
Thermal binding occurs in wedge type valves when there is a dimensional interference between the wedge and seat caused by temperature variations and thermal expansion. These valves are typically employed for applications in high-temperature environments.
2. Leakage problems due to thermal deformation
A sufficient amount of surface pressure between the discs and seats is necessary to achieve the sealing of the valve through compression. In order to withstand this pressure, the bodies need to be designed to be thick and strong. This is essential to ensure the valve functions properly.
If you are in need of high-quality Single Gate Disc Gate Valves, look no further than our professional manufacturing team in China. We have a track record of excellence and offer the best products at competitive prices. As a leading supplier of Single Gate Disc Gate Valves, we are confident that we can meet your needs. Don't hesitate to reach out to us to purchase your Single Gate Disc Gate Valve today!
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