As a valve that opens when the pipeline system flows forward and closes when it flows backward, the check valve is primarily used to prevent medium backflow, pump and motor reverse rotation, and medium discharge from containers. Currently, the most common types are the swing check valve, where the valve disc rotates around the valve body pin, and the lift check valve, where the valve disc moves along the vertical centerline of the valve body. However, both of these valve structures suffer from the...
The Structural Characteristics of The Slow-closing Check Valve Read
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Pneumatic fluorine-lined butterfly valves utilize polytetrafluoroethylene (PTFE) lined butterfly discs with spherical sealing surfaces, offering easy operation, tight sealing performance, and extended lifespan. They can be used for quick shutoff or flow regulation and are suitable for applications requiring reliable sealing and good regulating characteristics. These valves consist of pneumatic actuators and butterfly valves. Pneumatic butterfly valves use a circular disc that rotates with the valve...
How to Select Pneumatic Fluorine-lined Butterfly Valves Read
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Gate valves and butterfly valves serve the purpose of opening, closing, and regulating flow in pipelines. However, there are considerations to be made during the selection process. In water supply networks, larger diameter pipelines often opt for butterfly valves to minimize soil cover depth. For situations where soil depth isn't a significant concern, gate valves are preferred to minimize costs, although gate valves of the same specifications tend to be more expensive than butterfly valves....
How to Make Appropriate Choices Between Gate Valves and Butterfly Valves? Read
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Ball valves are prominent mechanical components in the valve market, consisting of the valve body, seat, ball, stem, and transmission device. Their functionality, whether switching or regulating flow, is achieved by actuating the rotation of the ball core. Widely utilized across various industries like chemicals, environmental protection, water treatment, urban construction, machinery, and food, ball valves are highly versatile and popular. There's a diverse range of ball valves available, categorized...
The Difference Between Full Bore and Reduced Bore Ball Valves Read
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The single-acting pneumatic ball valves are available in normally open type, typically open for ventilation and closed for air spring return. For double-acting pneumatic ball valves, ventilation opens, and in case of ventilation closure or air source fault, the pneumatic actuator resets the valve. These actuators boast rapid execution speeds, with the fastest switching occurring in 0.05 seconds per cycle, earning them the moniker of "pneumatic fast cut-off ball valves." Equipped with various...
The difference Between Single-acting and Double-acting Pneumatic Ball Valves Read
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The pneumatic butterfly valve operates by rotating a circular butterfly plate to open and close the valve. Primarily used for on-off control, it can also be adapted for throttling applications as a segment valve. Increasingly, the disc valve finds utility in low-pressure, large-diameter pipelines. The butterfly valve offers several notable advantages, including its simple structure, compact size, lightweight construction, and cost-effectiveness. Particularly noteworthy are the characteristics of...
Introduction of Pneumatic Butterfly Valves Read
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Understanding the operation of a rising stem gate valve is pivotal in grasping the intricate dynamics of fluid control systems. To comprehend this further, let's embark on an exploration into the intricate mechanisms and diverse applications of both rising stem and non-rising stem gate valves. Working Principles and Mechanisms: Gate valves, essential components in fluid control systems, operate using distinct mechanisms depending on the design. The rising stem gate valve employs a straightforward...
Rising Stem vs. Non-rising Stem Gate Valves Read
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3. Design of equal width of sealing surfaces of valve bodies and plugs The main sealing surface of the pressure-balanced plug valve is a cone surface. The angle of the cone surface affects the consistency of the sealing surface width, thereby affecting the sealing of the entire valve. The sealing cone surface and other vertex design scheme is that the cone angle of the sealing surface of the plug and the valve body is the same as the plug flow channel window angle vertex (shared vertex O1). At this...
High-pressure and Large-diameter Pressure-balanced Plug Valves (Part Two) Read
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Forged steel globe valves, crafted from forged steel via forging, are standard valves used for fluid flow control. They facilitate opening, closing, or regulating fluid passages. Below is an in-depth overview of the characteristics, uses, and upkeep of these valves. Key Features of Forged Steel Globe Valves Forged steel globe valves boast the following attributes, rendering them ideal for specific uses: 1. High-Temperature and High-Pressure Capability: Constructed from forged steel, these valves...
Characteristics of Forged Steel Globe Valve Read
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High-temperature and high-pressure valves, also known as high-temperature and high-pressure control valves, play a vital role in industrial automation process control. They act as the final control elements by receiving control signals from the regulating control unit and using dynamic operation to adjust process parameters such as fluid flow, pressure, temperature, and liquid level. Generally, they consist of an actuator and a valve. Depending on the stroke characteristics, high-temperature and...
Measures for High-Temperature and High-Pressure Valve Failures Read
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Abstract: The research background of high-pressure and large-diameter plug valves is introduced. The valve is analyzed from the equal deformation design of the valve body sealing surface, equal width of sealing surfaces of valve bodies and plugs, low torque of valves, lasting balance of sealing and anti-deformation. The matters needing attention in the design and manufacturing process of high-pressure and large-diameter pressure-balanced plug valves are obtained. High-pressure and large-diameter...
High-pressure and Large-diameter Pressure-balanced Plug Valves (Part One) Read
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Laser surfacing of ball valves is a revolutionary technique that has transformed the manufacturing industry. This process involves using a laser beam to melt and fuse a layer of material onto the surface of ball valves, resulting in enhanced durability and performance. The laser surfacing technique offers numerous advantages over traditional methods, making it an ideal choice for valve manufacturers. One of the key benefits of laser surfacing is its ability to create a strong metallurgical bond...
Laser Surfacing of Ball Valves Read
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