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...

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.

A diaphragm valve is a type of valve widely used in industrial applications. It controls the fluid by isolating the fluid from the internal moving parts of the valve body through a flexible diaphragm. Due to its unique design, diaphragm valves offer distinct advantages in many application scenarios. Structural characteristics The main components of a diaphragm valve include the valve body, diaphragm, bonnet, stem, and handwheel. The interior of the valve body is designed with a smooth passage to allow fluid to flow through easily. The diaphragm is typically made of elastic materials such as rubber or fluoroplastic and is fixed between the valve body and the bonnet, serving as both a seal and a barrier. The stem is connected to the diaphragm via threads or other mechanical devices, and the handwheel is used to drive the stem up and down. Working principle The working principle of a diaphragm valve is relatively simple. By rotating the handwheel or operating the actuator, the stem moves the diaphragm up and down. When the diaphragm moves down and presses against the valve seat, the valve closes, blocking the fluid. When the diaphragm moves up and away from the valve seat, the valve opens, allowing the fluid to pass through. Types 1. Based on the driving method, diaphragm valves can be divided into manual diaphragm valves, pneumatic diaphragm valves, and electric diaphragm valves. 2. Based on the structural form, diaphragm valves can be divided into straight-through and angle type. 3. Based on diaphragm materials, diaphragm valves can be divided into rubber diaphragm valves and fluoroplastic diaphragm valves. Advantages 1. Leak-Free Design: Diaphragm valves offer excellent sealing performance, effectively preventing fluid leakage. 2. Corrosion Resistance: With the appropriate diaphragm material, diaphragm valves can be used with various corrosive media. 3. Easy Maintenance: Simple structure, easy to disassemble and replace the diaphragm, resulting in low maintenance costs. 4. Low Fluid Resistance: Smooth flow path design results in low fluid resistance, making them suitable for high-viscosity fluids and fluids containing particulates. Application Areas: Diaphragm valves are widely used in industries such as chemical, pharmaceutical, food and beverage, water treatment, and electronics.

A threaded bonnet gate valve is an essential fluid control device widely used in pipeline systems. It achieves fluid on-off control through a structure where the bonnet and valve body are connected by threads. 1. Structural characteristics (1) Threaded connection Connection between valve cover and valve body: The valve cover of a threaded valve cover gate valve is connected to the valve body through threads. Compared to other connection methods, such as flange connection, threaded connection has the characteristics of compactness and simplicity. Connection between valve stem and valve cover: The valve stem and valve cover are usually connected by threads, which simplifies the assembly and maintenance of the valve. (2) Gate Gate Material: Typically made from materials such as stainless steel and cast steel, providing good corrosion and wear resistance. Gate Types: Depending on the application requirements, the gate can be designed as either a parallel gate or a wedge gate to meet different sealing needs. (3) Sealing Structure Soft Seal or Hard Seal: Threaded bonnet gate valves can use either a soft seal or a hard seal structure, depending on the application conditions and the characteristics of the medium. Soft seals typically use rubber or PTFE, while hard seals use metal materials. 2. Working principle A threaded bonnet gate valve operates by rotating the handwheel, which moves the stem up and down, thereby driving the gate to rise and fall to achieve the opening and closing control of the valve. When the handwheel is rotated clockwise, the stem moves down, and the gate gradually closes; when the handwheel is rotated counterclockwise, the stem moves up, and the gate gradually opens. Open State: When the gate is fully raised, fluid can pass through the valve body unobstructed, achieving a fully open state. Closed State: When the gate is fully lowered, the gate tightly contacts the seat, preventing fluid from passing through, achieving a fully closed state. 3. Advantages (1) Simple Structure: The threaded bonnet gate valve has a relatively simple structure, making it easy to manufacture and maintain, and suitable for various industrial applications. (2) Easy Installation: The threaded connection makes the valve easy to install, especially suitable for small diameter piping systems. (3) Reliable Sealing: The threaded bonnet gate valve employs various sealing structures, providing reliable sealing performance under different operating conditions. (4) Lower Cost: Compared to other types of valves, the threaded bonnet gate valve has lower manufacturing and maintenance costs, offering good economic efficiency. 4. Application field Due to its compact structure, easy installation, and reliable sealing, the threaded bonnet gate valve is widely used in the following fields: (1) Industrial Pipeline Systems: Used to control the flow of various fluids in pipeline systems in industries such as chemical, petroleum, and natural gas. (2) Water Treatment Systems: ...

As a critical fluid control device, fully welded ball valves are widely used in fields such as petroleum, natural gas, chemical industry, heating, and water supply. Their structural characteristics and unique performance enable them to excel under various operating conditions. Function 1. Flow Control: Fully welded ball valves control fluid flow by rotating the valve core. The bore of the ball can be designed as full bore or reduced bore, meeting the flow requirements of different pipeline systems. 2. Medium Shutoff and Opening: Fully welded ball valves offer excellent sealing performance, enabling complete shutoff or opening of the medium, ensuring the safe operation of pipeline systems. They are especially suitable for applications requiring tight closure, such as natural gas transmission pipelines. 3. Directional Control: Some fully welded ball valves are designed in a multi-port configuration, allowing them to change the direction of fluid flow to meet the needs of complex pipeline systems. Characteristics 1. Fully Welded Structure: The body of the fully welded ball valve is welded to the pipeline, eliminating potential leak points and enhancing the valve's sealing and reliability. This structure makes it particularly suitable for high-pressure and high-temperature operating environments. 2. High Corrosion Resistance: Fully welded ball valves are typically made from high-quality stainless steel or alloy steel, offering excellent corrosion resistance. They can be used long-term in corrosive media such as acids, alkalis, and salts. 3. Long Service Life: Due to its compact structure, the fully welded ball valve uses special material sealing rings between the ball and the seat, reducing wear and corrosion, thus extending its service life. Under normal conditions, the service life of a fully welded ball valve can exceed 20 years. 4. Easy Maintenance: The compact design of fully welded ball valves requires minimal maintenance. Even when maintenance is necessary, only the stem part needs to be inspected and replaced, reducing downtime and maintenance costs. 5. Wide Range of Applications: Fully welded ball valves are suitable for various conditions ranging from low to high temperatures and from low to high pressures. Their excellent performance makes them widely used in industries such as urban gas, thermal power, chemical, and metallurgy. 6. Easy Operation: Fully welded ball valves can be operated manually, electrically, or pneumatically, offering flexible operation to meet different automation control needs. Summary Due to its unique structure and excellent performance, the fully welded ball valve has become an indispensable and important valve in modern industry. Its fully welded structure not only enhances sealing performance and reliability but also significantly prolongs service life and reduces maintenance costs. With continuous technological advancements, fully welded ball valves will play an increasingly important role in more fields, provid...

Buried soft-seated gate valves are critical valves widely employed in pipeline systems, featuring unique designs and functionalities that render them extensively utilized across various industrial and domestic applications. Working principle The working principle of buried soft-seated gate valves is based on the sealing performance between the gate and the sealing surface. When the valve is in the closed position, the gate is pushed against the sealing surface by the actuating mechanism, typically a handwheel or electric actuator, achieving complete closure of the pipeline. When it is necessary to open the valve, the actuating mechanism pulls the gate away from the sealing surface, allowing the medium to flow freely in the pipeline. Structural characteristics 1. Subterranean Design: Buried soft-seated gate valves are typically installed underground within pipeline systems to shield the valves from external environmental impacts. Simultaneously, this design maximizes space conservation and ensures unobstructed pipeline flow. 2. Soft-Sealing Structure: Soft-sealing materials typically utilize rubber or polymers, offering excellent sealing performance and corrosion resistance. They can maintain a stable sealing effect across various media and temperatures. 3. High Pressure Endurance: The design structure of buried soft-seated gate valves is robust, capable of withstanding high pressure and impact forces, ensuring stable and reliable operation under various operating conditions. 4. Anti-corrosion Coating: Valves are typically coated with anti-corrosion coatings on their surfaces to enhance durability and lifespan, thereby reducing maintenance costs. 5. Complete Accessory Configuration: Buried soft-seated gate valves are typically equipped with accessories such as handwheels, electric actuators, limit switches, etc., to meet operational requirements under different conditions. Application area 1. Petroleum and Chemical Industry: Used for control and regulation of crude oil, natural gas, and chemical media. 2. Municipal Water Treatment Systems: Used for flow control and prevention of backflow in municipal water distribution networks. 3. Wastewater Treatment Plants: Used for drainage and regulation in wastewater treatment systems. 4. Thermal Power Plants: Used for flow control in boiler feedwater pipelines and cooling water systems. 5. Urban Heating Systems: Used for regulation and control of heat transfer media in centralized heating networks. Buried soft-seated gate valves play a crucial role as integral components in pipeline systems across industrial and civilian domains. Their reliable sealing performance, stable structural design, and extensive application areas make them indispensable in pipeline systems. This article aims to help readers gain a comprehensive understanding and application of buried soft-seated gate valves, thereby enhancing the safety and operational efficiency of pipeline systems.