Abstract: Cast valves are widely used in the main steam pipelines of power station boilers due to their low cost and flexible design. However, due to their special manufacturing process and operating environment, defects such as cracks, slag inclusions, and gas holes often occur during use. In conjunction with valve inspection cases, the detection process of valve cracks is introduced, the causes of cracks are analyzed, and reasonable suggestions are provided for the safe operation of main steam...
Failure Analysis of Valve Cracks in Main Steam Pipelines Read
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The diversity of gate valves stems from the design of their internal structures, which are optimized for specific industrial applications. Among the many gate valve types, parallel slide gate valves are highly regarded for their efficient performance in controlling fluid flow. The valves are opened or closed by a straight line movement of the internal disc. Compared to traditional wedge gate valves, they show superior sealing and ease of operation in high pressure and high temperature environments,...
Key Features of Parallel Slide Gate Valves Read
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Wastewater treatment plants play an important role in ensuring that water is effectively purified before it is returned to natural bodies of water such as oceans or rivers, which not only helps to maintain the health of the environment, but is also a key measure to protect Marine life from pollution. The main goal of these plants is to purify the water so that it is fit for drinking, thus ensuring that the discharged water does not negatively affect the ecosystem. To achieve this, the wastewater...
Application of Valves in Wastewater Treatment Plants Read
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Pneumatic control valves utilize compressed air as a power source, employing cylinders as actuators. They incorporate electrical valve positioners, converters, solenoid valves, and holding valves to drive valve actions. This facilitates switching or proportional adjustments, allowing them to regulate media flow, pressure, temperature, and other process parameters in industrial automation systems. Characterized by simplicity, sensitivity, rapid response, ease of maintenance, and cost-effectiveness,...
What is the Role of Feedback in Pneumatic Control Valves Read
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In modern industrial processes, steam pipeline systems are indispensable, serving critical roles in power generation, chemical production, and heating applications. Steam, known for its efficiency in energy transfer, requires precise control of temperature, pressure, and flow to ensure optimal performance and safety. Among the key components facilitating this control are self-operated regulating valves. These valves are prized for their simplicity, reliability, automatic regulation, and rapid response,...
The Role of Self-Operated Regulating Valves in Steam Pipeline Systems Read
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Gate valves and globe valves are two common types of valves in industrial pipeline systems. They are widely used in the petroleum, chemical, and electric power industries, among others. The upper sealing structure is an important part to ensure the operation of valves under harsh working conditions such as high pressure and high temperature. Upper sealing structure The upper sealing structure of gate valves and globe valves usually consists of valve bonnets, valve stems, packing boxes,...
The Upper Sealing of Gate Valves and Globe Valves Read
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Valves are crucial components in industrial processes, offering precise control over fluid flow, pressure, and temperature. Among the various types, plug and ball valves stand out, widely used in industries like oil and gas, chemical processing, and water treatment. Plug Valve Overview A plug valve features a cylindrical or conical plug with bored passages that control fluid flow. Rotation of the plug within the valve body directs flow by aligning or obstructing inlet and outlet ports. This...
Comparing Plug Valves and Ball Valves Read
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Automatic flow control valves are crucial in fluid management for maintaining precise flow rates without manual intervention. They achieve this through mechanisms that automatically adjust the control valve opening based on flow requirements. This capability is essential across various industries where consistent flow rates are critical for operational efficiency and safety. Types of Automatic Flow Control Valves Linear Valves These valves regulate flow using linear actuators such as pneumatic...
The Role of Automatic Flow Control Valves in Industry Read
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Check valves are crucial in piping systems, allowing one-way flow to prevent backflow and damage. They're common in pump and compressor discharge lines. Like any mechanical part, they wear out over time due to internal wear and corrosion. How long do they typically last before needing replacement? Let's delve into causes of failure and factors affecting lifespan to help you prolong their durability and prevent unexpected issues. Common Causes of Check Valve Failure Incorrect Installation...
How to Extend the Lifespan of Check Valves Read
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