... 2 Microcomputer intelligent control 3 Pressure safety interlock device 4 Auto-exhause when over pressure PRODUCT ... typeStructure of handwheel type quick-door-open safety interlock device (accord with the 49th requirement of Vessel ... acidproof, alkali resistance, anti-corrosiveMicrocomputer intelligent controlPressure safety interlock device, over temperature protection deviceAuto-raising type packing ...