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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

Recently, an exciting news came from our J-VALVES team. That is, the fully welded ball valve has been successfully exported to Russia and delivered smoothly! Behind this achievement, countless efforts and hard work of the team are condensed. From the careful research and development of products,

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