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Design and Application of O-Ring Sealing in Ball Valves

Design and Application of O-Ring Sealing in Ball Valves

Ball valves are critical control components in industrial pipeline systems, extensively used in pressure pipelines, pressure vessels, boilers, and other equipment to facilitate the flow, shutoff, and regulation of media. Their applications span a wide range of industries, including liquefied natural gas, power generation, light industry, construction, and metallurgy. As a key sealing element, the rubber O-ring (hereafter referred to as the O-ring) is an ideal choice for achieving efficient sealing...

Nov 18, 2024
Pros & Cons of Common Materials Used in Industrial Valves

Pros & Cons of Common Materials Used in Industrial Valves

Industrial valves are core components in fluid control systems, and their material directly affects performance, durability, and suitability for various applications. Different valve materials have their own strengths and weaknesses depending on the operating conditions, such as temperature, pressure, and the nature of the media. Below is a detailed analysis of common valve materials, highlighting their characteristics and suitability for different working conditions. Cast Iron Valves Cast...

Nov 17, 2024
Design Improvement of Steam Jacketed Ball Valves

Design Improvement of Steam Jacketed Ball Valves

A Steam jacketed ball valve, also known as a jacketed ball valve, is an industrial valve designed specifically for handling high-viscosity, easily solidifying fluids. This valve features an external metal jacket that forms an insulation channel around the valve body, allowing steam or other heating mediums to be injected into the channel. This design keeps the medium inside the valve flowing smoothly by maintaining the necessary temperature, which also minimizes heat loss between the valve and pipeline....

Nov 16, 2024
Ball Check Valve: Innovative Design & Application Advantages

Ball Check Valve: Innovative Design & Application Advantages

In many industrial applications, check valves are essential components for preventing reverse fluid flow and ensuring safe operation of equipment and systems. However, traditional swing and lift check valves often encounter issues such as valve disc sticking, poor sealing, and maintenance challenges, which can impair performance. Moreover, these valves can cause strong water hammer effects when closing, with hammer pressures often far exceeding the system's working pressure, posing serious risks...

Nov 15, 2024
Comparison of Underwater Flat Gate Valve Sealing Structures

Comparison of Underwater Flat Gate Valve Sealing Structures

Underwater flat gate valves play a vital role in oil and gas extraction and deep-sea operations, especially in terms of sealing technology. With the advancement of technology, the sealing structures of underwater gate valves have become increasingly diversified. Depending on the number of valve seats and the principle of sealing, underwater flat gate valve sealing structures can be classified into single-seat sealing and split-seat sealing. This article will explore the characteristics, working...

Nov 14, 2024
High-Pressure Slab Gate Valve Design for Extreme Conditions

High-Pressure Slab Gate Valve Design for Extreme Conditions

High-pressure slab gate valves are specialized valve systems designed for high-pressure, low-temperature, and high-sulfur environments. These valves are widely used in the transportation of natural gas, oil, water, and other corrosive media. Featuring innovative structural design, carefully selected materials, and excellent sealing, these gate valves offer exceptional corrosion and wear resistance, ensuring reliability and safety even under extreme conditions. This article provides an overview of...

Nov 13, 2024
Addressing Pressure Locking Issues in Parallel Gate Valves

Addressing Pressure Locking Issues in Parallel Gate Valves

Parallel gate valves are widely used in various fluid control systems. However, under certain operating conditions, they may experience a phenomenon known as pressure locking (sometimes referred to as partition pressurization). This issue is primarily caused by thermal expansion of the fluid, especially when the gate valve is closed and the fluid is trapped in the valve body's chamber. As the temperature rises, the fluid expands, which may increase the pressure inside the chamber, potentially...

Nov 12, 2024
Working Principle, Operation, and Maintenance of Globe Valves

Working Principle, Operation, and Maintenance of Globe Valves

Globe valves are widely used in fluid pipelines for regulating flow. Their primary function is to control the flow rate of fluids by adjusting the position of the valve plug. Typically, globe valves have a T-shaped body design, making them suitable for installation in straight pipelines. This design allows the fluid to enter through the center of the valve, make two 90-degree turns, and exit through the valve seat. The position of the valve plug determines the flow path, making the design and operation...

Nov 11, 2024
Electric Gate Valve Comparison: Ordinary vs. Fully Enclosed

Electric Gate Valve Comparison: Ordinary vs. Fully Enclosed

Electric gate valves are important equipment widely used in ships, naval vessels, and various industrial circuit systems. The design requirements for these valves include compact structure, small size, light weight, resistance to tilting and swinging, impact resistance, high reliability, long service life, and ease of maintenance. Based on differences in sealing structure and drive design, electric gate valves are mainly divided into ordinary electric gate valves and fully enclosed electric gate...

Nov 09, 2024
Improvements in Ball Valve Sealing Structures

Improvements in Ball Valve Sealing Structures

Ball valves are widely used in fluid control systems, and the sealing performance directly affects the quality, performance, and lifespan of the valve. In the past, ball valves typically used O-ring rubber seals. Although this design is simple and easy to assemble, it often struggles to provide effective sealing in complex working conditions, especially under high pressure, large diameters, or media containing suspended particles. In these situations, traditional sealing designs are prone to failure....

Nov 08, 2024
How to Improve Casting & Sealing of Oil Wellhead Gate Valves

How to Improve Casting & Sealing of Oil Wellhead Gate Valves

The gate valve used in oil wellhead equipment, commonly known as the "Christmas tree", is essential in oil field operations. These valves are widely used in the oil extraction process to control the flow of oil by opening and closing as needed. However, the current wellhead gate valves have a relatively low qualification rate in production, especially during hydrostatic strength and sealing performance tests, with rates ranging from just 30% to 70%. These issues not only impact the lifespan...

Nov 07, 2024
Valve Selection and Installation for Oxygen Pipelines

Valve Selection and Installation for Oxygen Pipelines

In oxygen pipeline systems, oxygen is a highly reactive gas, and its flow and handling must be approached with extreme caution. Due to oxygen's high reactivity, interactions with metals, non-metallic particles, static electricity, and other elements can lead to temperature increases, potentially triggering ignition mechanisms and causing serious accidents like fires or explosions. Therefore, the selection, installation, and maintenance of valves in oxygen pipelines require strict technical standards...

Nov 06, 2024