Overview of low-temperature valves:

The opening and closing component of low-temperature valves is the gate, and the movement direction of the gate is perpendicular to the direction of the fluid. The valve can only be fully opened and fully closed, and cannot be adjusted or throttled. In the design of low-temperature valves, on the one hand, the structural design ensures that the packing operates at a temperature close to the ambient temperature. Gaskets for low-temperature valves must have reliable sealing and resilience under normal temperature, low temperature, and temperature changes. Spiral wound gaskets made of polytetrafluoroethylene and acid resistant steel tape are often used, with priority given to spiral wound gaskets made of flexible graphite and acid resistant steel tape (-200 ℃).