Two-seater pneumatic control valve flow coefficient test method

Two-seater pneumatic control valve flow coefficient of the test method of two-seater pneumatic - valve flow coefficient flow coefficient can be divided into the kinds of Av, Kv, Cv 3 kinds. Two-seater pneumatic - valve to test device and test area. Basic structure of test equipment and test area as shown in figure ( 1) Throttle valve: choose any form of throttle valve, the selection of imported throttle valve and the installation, should be in does not affect the premise of flow measurement accuracy. Rules, therefore, the export of the throttle valve nominal size should be bigger than test with the smell of nominal size. （ 2) The thermometer thermometer used to measure the temperature of the medium in the pipeline. The selection and installation of the thermometer, in does not affect the accuracy of temperature measurement under the premise of. （ 3) Flow meter used to measure the medium flow in the pipeline. Measured valve can be installed in the inlet or outlet, when installation, should choose suitable with the structure of throttle valve, and import or export pipe straight pipe section is equal.