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Is the valve leaking again? Unveiling the six major causes of valve sealing surface damage! 1. Erosive damage: When the medium contains solid particles (such as catalyst powder, rust, sand grains) or when a high-speed gas-liquid two-phase flow passes through the valve, the sealing surface may develop grooves or pitting due to frequent impacts. Especially under throttling conditions, the flow velocity increases dramatically, and the sealing surface is very prone to developing radial flow marks as a result of being \"blown\". The typical manifestation is linear wear along the flow direction of the medium. 2. Plastic deformation and indentation caused by contact stress
【Ten Years of Rapid Development in Chemical Engineering Equipment】World’s first DN2800 ultra-large-diameter ductile iron pipe successfully installed 3091-2026 https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=5718291 (Source: Haichuan Chemical Industry Forum (Hua Haichuan Liu hcbbs))
[HaiChuan Safety Forum] Hidden hazards around us – In UPS rooms and battery rooms, the safety distances between battery packs are insufficient; moreover, metal supports lack grounding or neutral protection! https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=5718793 (Source: Haichuan Chemical Industry Forum (Hua Hai Chuan Liu hcbbs))
【HaiChuan Safety Discussion】Hidden Dangers Around Us – Insufficient pressure in positive-pressure air respirators among emergency supplies, and emergency supplies not being kept in good condition https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=5718852 (Source: HaiChuan Chemicals Forum (HuaHaiChuanLiu hcbbs))
【Essential】In metal materials, the α phase, β phase, γ phase, and so on can always be seen. Do you know why they are named this way? https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=5718856 (Source: Haichuan Chemical Industry Forum (Hua Haichuan Liu hcbbs))
【Ten Years of Rapid Development in Chemical Equipment】3082-2026 to Fill the Gaps. The first-phase project of Zhonghua Chemical West New Materials, with a capacity of 50,000 tons per year for the production of ultra-high molecular weight polyethylene, completed its trial operation with a successful start-up. https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=5717659 (Source: Haichuan Chemical Forum (Hua Haichuan Liu hcbbs))
【Haichuan Chemical History】Summary Post--Viewing Development through History! Continuously being updated! https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=5718076 (Source: Haichuan Chemical Industry Forum (Hua Hai Chuan Liu hcbbs))
The information is great; thanks to the original poster for sharing it so generously
【Safety Management and Standardization of Special Equipment】How should Dewar flasks be regulated – according to flask regulations or capacity regulations? https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=5718939 (Source: Haichuan Chemical Industry Forum (Hua Hai Chuan Liu hcbbs))