With the development of China's science and technology, automatic valves produced by China's chemical industry have been rapidly implemented, which can complete the accurate control of flow, pressure, liquid level and temperature. In the chemical automatic control system, the control valve is a main actuator, and its model and device quality have a major impact on the conditioning quality of the c···

Valve is the accessory of equipment and pipeline, its maintenance should be combined with the maintenance of equipment and pipeline.   According to the regulations for maintenance and repair of refinery equipment stipulated by the Ministry of chemical industry of raw materials and fuels, the repair contents of high, medium and low pressure valves for oil products, steam, water and ···

Pressure maintenance valve is a complex, dangerous and technical work. Besides being bold and prudent, pressure maintaining valve should also have strict scientific attitude. Especially, it is necessary to conduct leakage blocking work of explosive, highly toxic, high temperature, high pressure and radioactive media, and strictly follow the pre determined scheme and relevant safety regulati···

The connection parts such as nut, spring washer, stop washer, cotter pin are commonly used to prevent the nut from loosening. The connection structure of stem and closure part is usually used the method of stopping washer and flange washer to prevent looseness, and the effect is better.   In addition, the methods used to prevent the valve from loosening include the fixing method of···

In the professional maintenance work of valve technology before and after the completion and operation of electric welding and welding, service items for valves play a particularly important role in the production, manufacturing and operation. Proper and orderly and reasonable maintenance will maintain the valves, make the valves work normally, give full play to their functions, and increase th···

1、 Key types and structural features of safety valves:   The safety valve is a kind of fully automatic valve, which can be fully opened under the condition of overpressure of mechanical equipment, and discharge unnecessary substances, so as to ensure the safety of mechanical equipment. When the working pressure drops to the standard value, it can be fully closed and repaired, and ···

Whether the valve needs repair and maintenance can be known from many ways. Your valve manufacturer or customer manager will inform you, and of course, the valve user manual will also indicate it. However, valves also have common maintenance nodes:   install   In order to ensure the normal operation of the valve, it is very important to test the valve after···

On site maintenance service for key application valves   When a key valve breaks down in operation, especially when the fault cannot be easily eliminated, professional on-site service personnel come to the scene like a savior. TA can do many things on site, such as wellhead on-site maintenance, pipeline maintenance, wellhead integrity test, general commissioning and on-site···

The key application valve is the same as the automobile, if it is not maintained in time, it may have frequent faults and need more large-scale maintenance. A few conventional maintenance methods are carried out on site or in the manufacturer's service center   diagnosis   Use a computer to test which component of the valve or system fails for the valve user.  ···

Whether the valve needs repair and maintenance can be known from many ways. Your valve manufacturer or customer manager will inform you, and of course, the valve user manual will also indicate it. However, valves also have common maintenance nodes:   install   In order to ensure the normal operation of the valve, it is very important to test the valve after···