... 20#alloy nonstandard Applicable working condition 1,The pressure of sealed chamber: 1.2Mpa 2,The temperature of sealed chamber: -40-220 ... , weak acid ,weak base and other general corrosive liquidDescription 1,The small spring with uniform spring force,it can be operated under ... . 2, Any impurities are not allowed in the medium.3,It is used for the condition of high temperature and high pressure ...