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DN400 PN160 A105 extended stem fully welded trunnion ball valve complies with ASME B16.34 pressure‑temperature rating & API 6D pipeline valve specification. Learn how two authoritative standards govern body material, wall thickness, testing & buried‑pipeline performance for gas transmission & high‑pressure heating projects.

For high-pressure fluid transmission systems including urban gas pipelines, long-distance oil & gas trunk lines and thermal heating networks, the sealing performance of industrial valves under fire conditions directly determines explosion prevention and hazardous medium leakage control. As core shut

Structure and Principle of Fully Welded Ball ValvesThe valve body is welded from steel pipes into an integral sealed structure. The ball is connected to the driving device through the valve stem, and the opening and closing can be realized by rotating the ball. When opened, the through hole of the b

Understanding ANSI B16.34What is ANSI B16.34?ANSI B16.34 is a widely recognized standard developed by the American Society of Mechanical Engineers (ASME) and the American National Standards Institute (ANSI). It specifies the requirements for the design, construction, testing, and marking of valves,

API 6D: Pipeline Valves StandardOverviewAPI 6D, titled "Specification for Pipeline and Pipeline-Related Valves," is specifically designed for valves used in petroleum and natural gas pipeline systems. It provides detailed requirements for the design, construction, testing, and marking of pipeline va

Overview of Common Materials for Full-Welded Ball ValvesThe material selection for full-welded ball valves is diverse, mainly including carbon steel, stainless steel, alloy steel, cast iron, and copper alloys. Each material has its unique physical and chemical properties, making it suitable for diff

Understanding Full-Welded Ball ValvesKey Features• Welded Construction: Full-welded ball valves feature a seamless construction, ensuring a robust and leak-tight design.• Durability: These valves are designed to withstand high pressures and harsh operating conditions, making them suitable for demand

Full-welded ball valves are essential components in fluid control systems, widely used across various industries for their durability, reliability, and ability to provide precise flow control. When it comes to selecting the right material for full-welded ball valves, understanding the performance di

API 6D Ball ValvesDesign and Performance• Structure: API 6D ball valves are designed for pipeline applications and typically feature a fixed ball structure. This design ensures robustness and reliability, especially in high-pressure environments.• Sealing: These valves offer bidirectional sealing, w

I. Key Points of Welding Process1) Welding Materials· Valve Body Material: Commonly used carbon steel or low - alloy steel, such as ASTM A105.· Welding Wire and Flux: The welding wire should match the valve body material, and the flux should have good slag - releasing property to ensure the weld qua

I. Working Principle of Gate ValveThe gate valve consists of a valve body, a gate, a valve stem, a valve seat, and a driving device. When opening, the driving device drives the gate to move upward through the valve stem, opening the medium passage. When fully open, the flow resistance is close to th

Sealing Comparison(I) Sealing Performance of fully welded Ball ValvesThe sealing performance of fully welded ball valves is one of their most significant advantages. The valve body adopts an integral welding structure, eliminating potential leakage points at traditional flange joints. This design en

Applications in the Upgrading and Reconstruction of Urban Pipe Networks(I) Urban Gas SystemIn the urban gas pipeline network, fully welded ball valves are used to control and cut off the flow of gas. Their zero-leakage performance and corrosion resistance ensure the safety of gas transportation and

Structural characteristics of fully welded ball valves. The fully welded ball valve adopts an integrally welded valve body structure, eliminating the possible leakage points of traditional flange-connected valves. Its ball and valve seat are closely fitted to form a two-way seal to ensure that the m

Full welded ball valves are widely used in buried pipeline systems due to their unique structure and performance advantages, especially in key fields such as urban gas and oil and natural gas transportation. Their reliability is directly related to the safe operation and service life of pipeline sys