Usually there are three kinds of elastic solution to cut off the pneumatic control valve

Cutting of high temperature medium pneumatic regulator assembly at room temperature, working under high temperature, the temperature changes a few baidu. Thermal expansion will change when assembling sealing pressure ratio is established. Card, too tight, the sealing surface movement when they grazed and seriously, strain; Too loose, sealing pressure is not enough, two kinds of conditions can leak has increased dramatically. In terms of cutting effect, quarter-turn valves than straight trip valve ( Such as single seat valve, sleeve valve, gate valve, etc. ) More simple structure, reliable sealing effect more, have more advantages. More representative three partial hardness sealing butterfly valve, ball valve, etc. The best solution is to use resilient seated to absorb the difference caused by the change. Usually there are three kinds of elastic solution: (1) spring loaded; (2) wafer type flexible metal ring; (3) and flexibility of resilient seated. As well as the latter is best, flexible thermal expansion, overcome another stiffness and surfacing wear resistant alloy to improve the reliability.