1. The main body adopts casting and forging structure, with parallel double-sealing pair semi-mandatory two-way sealing, and the step-by-step action of the sealing surface movement and the wedge-shaped block wedge-tightening movement achieves zero leakage.
2. The movement friction force of the sealing surface is small, the opening and closing are light, and the wear of the sealing surface has an automatic compensation function.
3. Simple and compact structure, convenient maintenance and long service life.
4. The valve cover packing chamber is equipped with a vacuum sealing structure, which has the function of self-expansion and compression, and the seal is sealed with high-strength expansion materials, so that the system is completely isolated from the atmosphere and has good system air tightness.
5. The connection form of this series of valves is divided into two types: flange and welding. There are two types of driving methods: manual and electric.
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