XPS screen changer is composed of screen changer main body, sliding plate, high temperature oil cylinder, heater, etc. The screen changer is specially designed for butane filled, chlorofluorocarbon, carbon dioxide and other gas products, which are prone to explosive, gas leakage, glue leakage, etc. The sealing parts are made of special alloy steel, which are specially processed through tempering, nitriding, fine grinding and other processes. The integrated structure avoids explosive, material le