Automatic valve refers to the valve that does not need an external force to drive, but depends on the energy of the medium itself to make the valve action. Such as PVC Safety Valve, PVC Pressure Reduce Valve, drain valve, Plastic Check Valve, automatic regulating valve, etc.
Use: Can be used to control the flow of water, steam, oil, gas, mud, various corrosive media, liquid metals and radioactive fluids.
Components: Composition of valve body, valve core and control device.
Function: Measure and control of pipeline fluid and prevent valve closing flow may cause safety and other accidents.
Application: The automatic valve in the compressor is a spring-connected valve sheet, whose opening and closing depends on the pressure difference between the inside and outside of the valve sheet (atmospheric pressure and cylinder pressure).
Installation method: Before the automatic valve is loaded into the automatic valve box, it should be disassembled and cleaned with clean alcohol. If the automatic valve is used, you must grind the sealing surface, and then test the pressure with special tools. Under the pressure of 6 kg / cm 2, the leakage amount is less than 0.1 l / min. In the actual work can fill kerosene leakage detection or use soap water inspection institute first put the automatic valve in the special tools, into 6 kg / cm 2 pressure, what pressure 3 points of air leakage of the standard family taboo within 3 minutes of the diameter of 40 mm soap should not be more than 6. Automatic valves that pass the pressure test should be open pin for backup. Pay special attention to the opening pin must be used low temperature resistant brass or stainless steel products, can not casually use the general opening pin substitute.
When the air separator is installed, and the impurities in the accumulator (or reversible heat exchanger) and the inner pipe in the tower are completely blown away to prepare the sulfur of the bottom fractionate to heat the automatic valve into the automatic valve box. The automatic valve box should be cleaned and drained with alcohol. Installation method; install the upper layer first and then the lower layer first. When installing, pay attention to the Rubber Gasket to put straight, especially the pure aluminum pad to be neat. Tighten the pressing nut symmetrically and evenly.