... security protection when media overpressure. When pressure in the air storage exceeds allowable value, the safety valve will ... The main devices are CNC machining centers, homemade digital control lathe,air test device, special painting line, ect. Nameoperating ... tempretureoperating pressure(Mpa)connection sizeMaterialbrass safety relief valve for air compressort<200C0.1-1.51/4", 3/8"brass ...