High-pressure hydrogenation gate valves are specialized valves used in critical pipelines of hydrocracking and hydrorefining units, designed specifically for harsh conditions such as high temperature, high pressure, and exposure to hydrogen. Their valve bodies are mostly forged to provide excellent resistance to hydrogen corrosion and embrittlement. The sealing structure often employs a self-tightening seal, ensuring increased sealing reliability at higher pressures, and the sealing surfaces are often overlaid with hard alloy to enhance wear resistance. The core objective of this valve is to achieve zero leakage and long-term safe and stable operation under such demanding conditions, making it one of the core pieces of equipment ensuring the safety of modern refining and chemical hydrogenation units.