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What is a Wafer Ball Valve?
What is a Wafer Ball Valve?
2024-07-11

The wafer ball valve is a common industrial valve, widely used in various piping systems due to its unique structural design and superior performance. Definition A wafer ball valve is a valve that controls fluid flow by rotating the valve core. Its body is designed in a wafer style, meaning the valve is clamped between two pipeline segments with bolts, eliminating the need for additional space required by traditional flange connections. Wafer ball valves are typically used for applications involving shutoff, distribution, and changing the flow direction. Structural characteristics 1. Compact Design: The wafer ball valve features a wafer-style design, making its structure compact and requiring minimal installation space, ideal for pipeline systems with limited space. 2. Lightweight: Due to the elimination of flanges and bolt connections, the wafer ball valve is relatively lightweight, helping to reduce the load on the pipeline system. 3. Easy Installation and Maintenance: The installation and removal of wafer ball valves are very convenient; simply sandwich the valve between the pipelines and secure it with bolts. This design greatly simplifies the installation and maintenance process of the valve. 4. Good Sealing Performance: Wafer ball valves typically use soft or hard sealing structures, ensuring excellent sealing performance and effectively preventing fluid leakage. Working principle The working principle of the wafer ball valve is relatively simple, primarily involving the rotation of the valve core (ball) to control fluid flow. The specific process is as follows: 1. Opening the valve: When the handle or actuator is rotated, the valve core (ball) rotates 90 degrees, aligning the valve passage with the pipeline passage, allowing fluid to pass through freely. 2. Closing the valve: By rotating the handle or actuator in the opposite direction, the valve core (ball) rotates another 90 degrees, making the valve passage perpendicular to the pipeline passage, blocking the fluid flow and achieving the shut-off function. Advantage 1. Space-saving: The compact design of wafer ball valves takes up less space, making them particularly suitable for installations with limited space. 2. Lightweight: Compared to traditional flanged ball valves, wafer ball valves are lighter, making them easier to transport and install. 3. Easy installation: The installation process of wafer ball valves is simple and quick. They only need to be clamped between the pipes and fixed with bolts, eliminating the cumbersome steps of flange connections. 4. Excellent sealing performance: Wafer ball valves use high-quality sealing materials, providing superior sealing performance suitable for applications requiring high sealing standards. 5. Versatile applications: Wafer ball valves are suitable for various industrial piping systems, such as water treatment, chemical, oil and gas, pharmaceutical, and food industries. Application 1. Water treatment systems: Used to control water flow an...

Golden Years, Timeless Classics - A Wonderful Review of the DERVOS 16th Anniversary
Golden Years, Timeless Classics - A Wonderful Review of the DERVOS 16th Anniversary
2024-07-05

On the evening of June 27, 2024, DERVOS joyously celebrated its 16th anniversary. We not only invited esteemed partners to join us in the celebration, but also meticulously planned a unique journey through time. With the theme "Golden Years, Timeless Classics," we took a nostalgic trip back to the 1990s in Hong Kong. The celebration was filled with a sense of nostalgia and joy, with every detail seemingly transporting us through time to experience the unique charm of that golden era. To match the theme, all partners and colleagues carefully prepared Hong Kong-style outfits, with many colleagues even mimicking classic looks. We specially arranged a fashion show for the occasion. Everyone confidently walked the catwalk, showcasing their Hong Kong-style elegance. Under the flash, everyone exuded a unique charm, as if time had turned back, and the glamour and charm of the 1990s were once again brought to life. In order to let our partners to experience the essence of traditional Chinese culture, we meticulously prepared a "lacquer fan" making activity. By dripping different pigments into the water, the fans spun in the water, creating unique and beautiful patterns that left everyone in awe. Each lacquer fan became a one-of-a-kind piece of art, embodying the creativity and ingenuity of our clients. Our dear partners wrote blessings for Dervos on folding fans and stamped their own exclusive seal, leaving behind cherished memories. The versatile Dervoser added endless joy to the celebration. Sheila and Noisy's jazz dance performance brought the atmosphere to a climax. As the dynamic music played, their passionate performance energized everyone. With the explosive background music, everyone took to the dance floor together, dancing and celebrating this unforgettable moment. That night, we not only reminisced about the glorious past but also looked forward to future prospects. Dervos will continue to uphold the spirit of "Timeless Classics, Everlasting Brilliance," and together with every customer and colleague, write even more magnificent chapters. We thank everyone who has supported and accompanied Dervos, and we look forward to continuing our journey together, creating a better tomorrow.

Introduction to Y-Type Globe Valve
Introduction to Y-Type Globe Valve
2024-07-05

The Y-type globe valve is a common type of valve widely used in various industrial fields such as petroleum, chemical, power, and water treatment. Its unique design makes it excellent for regulating and shutting off fluid flow, offering high reliability and durability. Structure and Principle The Y-type globe valve consists of main components such as the valve body, bonnet, stem, disc, and handwheel. Its name is derived from the Y-shaped structure of its valve body chamber. This design not only reduces the resistance of fluid passing through but also facilitates the movement of the disc. The stem is driven by a handwheel or an electric actuator. When the stem rises, the disc moves away from the seat, allowing fluid to pass through. When the stem lowers, the disc contacts the seat, cutting off the fluid flow. Features and advantages 1. Low Fluid Resistance: Due to the Y-type structural design, the resistance encountered by the fluid passing through is lower than that of a standard globe valve, resulting in minimal flow loss. 2. Excellent Sealing Performance: The sealing surfaces of the disc and seat are made of hard alloys or other wear-resistant materials, ensuring reliable sealing and long service life. 3. Easy Operation: The handwheel operation is simple, and the valve can be equipped with electric or pneumatic actuators for remote control and automation. 4. Easy Maintenance: The valve body has a simple structure, making it easy to disassemble and maintain, thus reducing maintenance costs. Application area 1. Petroleum and Natural Gas Industry: Used in oil pipelines and natural gas transmission systems, featuring high-pressure resistance and corrosion resistance. 2. Chemical Industry: Suitable for pipeline systems with various corrosive media, possessing excellent anti-corrosion performance. 3. Power Industry: Used in steam and cooling water systems, resistant to high temperature and high pressure. 4. Water Treatment: Utilized in wastewater treatment plants and waterworks for cutting off and regulating water flow. Installation and maintenance 1. Location Selection: Choose the appropriate location based on the pipeline direction to ensure convenient valve operation. 2. Installation Direction: Install according to the medium flow direction markings to avoid improper sealing caused by reverse installation. 3. Regular Inspection: Regularly check the valve's sealing performance and operational flexibility, and replace damaged seals promptly. 4. Lubrication Maintenance: Regularly lubricate the threaded parts of the valve stem to maintain smooth operation.

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