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...

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....

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...

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...

Spray Welding Process for Coating Valve Sealing Surfaces

Spray Welding Process for Coating Valve Sealing Surfaces

Spray welding is a critical surface treatment technology that involves spraying an alloy coating onto the sealing surface of valves. This process significantly improves the valve's wear resistance, corrosion resistance, and overall service life. It is widely used in the repair and enhancement of industrial valves, particularly in industries like oil, chemicals, and power generation. This article will outline the process flow of alloy coating on valve sealing surfaces, covering the preparations...

Design and Structural Features of Low-Temperature Valves

Design and Structural Features of Low-Temperature Valves

Low-temperature valves play a crucial role in industries such as fertilizers, liquefied natural gas (LNG), and petrochemicals. These valves are essential for controlling liquid nitrogen and other inert gases, and they are widely used in handling flammable, explosive, and easily vaporizing substances. Since these materials can rapidly vaporize and expand in volume when heated or during flashing, the design of low-temperature valves must prioritize safety, reliability, and durability to withstand...

Gear Operated Butterfly Valve: Gear Boxes Installation & Using

Gear Operated Butterfly Valve: Gear Boxes Installation & Using

In modern industrial fluid control systems, the gear boxes of a gear operated butterfly valve play a crucial role. As a key component, they not only regulate and control fluid flow but also directly affect the efficiency and safety of the entire system. Proper installation and maintenance of the gear boxes ensure smooth fluid flow in the pipes, prevent leaks, and enhance the reliability and stability of the system. This article will explore the closing methods, installation requirements, material...

Grooved Butterfly Valve: Unique Design and High Performance

Grooved Butterfly Valve: Unique Design and High Performance

Grooved butterfly valves are widely used in the valve industry due to their unique design and superior performance. As an efficient flow control device, they not only offer excellent operational convenience but also strong durability and adaptability. This article will detail the design structure, material characteristics, application scenarios, and installation advantages of grooved butterfly valves to fully showcase the superiority of this type of valve. Design Structure and Working Principle...

Groove vs. Wafer Butterfly Valves: Differences & Applications

Groove vs. Wafer Butterfly Valves: Differences & Applications

Butterfly valves are common flow control devices that are widely used across various industries due to their simple design and ease of operation. Among them, groove butterfly valves and wafer butterfly valves are two main types, each with unique structural characteristics and performance features that make them suitable for different applications. Understanding the differences between these two types of butterfly valves and their specific use cases can optimize system design and enhance the stability...

Key Features and Advantages of Carbon Steel Gate Valves

Key Features and Advantages of Carbon Steel Gate Valves

Carbon steel gate valves are crucial elements in fluid control systems, widely used across various industries. Made primarily from carbon steel, these valves offer good mechanical properties and corrosion resistance. The gate valve operates using a gate, which moves perpendicular to the fluid flow, allowing only full open and full close functions, making it unsuitable for flow regulation or throttling. The simple design and reliable structure of carbon steel gate valves enable them to adapt to diverse...