To ensure the reliable operation of the control valve, here not only refers to the manufacturing quality of the control valve itself, but also involves the correct calculation of the control valve, valve selection, as well as including the operator training and quality improvement. 1, in order to prevent misuse, process personnel must pay attention to the nameplate of the subject matters needing attention, according to our new new pneumatic control valve (GB / T4213-92), the implementing agencies nameplate at least to indicate the manufacturer name, product type, rated Flow coefficient, design number, product number and year of manufacture, etc .; 2, the body will have to cast or out of the media flow direction of the arrows and "DN" value and "PN" words and values, you can The sign is on the nameplate that is firmly attached to the body. 3, important control valve should be equipped with enough accessories, such as valve positioner, limit switches. 4, have enough space for installation and operation, adequate lighting, strict operating procedures. 5, in order to ensure the quality of regulating valve, the selection of regulating valve to go through the correct calculation: (1), type, caliber, the performance must meet the requirements; (2), control valve of various important parts of the material to be strict Selection; (3), have sufficient strength and stiffness; in accordance with national standards through the pressure test, tightness and other tests; (4), manufacturers of manufacturing technology and test methods must meet the standards, to be identified by the competent authorities Recognized. Keyword Search: Control Valve