Pneumatic pneumatic control valve in the device performance test with naxi specification

Pneumatic pneumatic control valve in the device performance test has naxi specification pneumatic pneumatic - valve device performance test specification ( GB / T 12242 - 2005). Pneumatic pneumatic - valve to put device used to prevent boiler, pressure vessel and pipeline equipment overpressure, these tests used to determine the action of the pressure relief device performance and emissions. GB/T 12242 for the following types of heavy closed and closed pressure relief devices: a. Pneumatic pneumatic control valve; b。 Blasting device; c。 Broken/shear pin device; d。 Fusible plug device.