ontrol valve maintenance variety series, too many specifications, early always feel hard to tell, especially in the face of special difficult products tend to impossible to start. Nine major categories summarized straightened out, to understand its structure and application characteristics to sort out the special relationship between the special products with nine categories based products for understanding the regulating valve to improve the quality of the pneumatic control valve selection will great help.
To regulating valve repair classification
First divided into nine categories based products, clarify its structure, application characteristics, this section summarize their main parameters and working conditions. Conditions of use beyond the conditions of Table II, it is necessary for the special requirements of the corresponding base products to be improved, they become special products, such as the strong corrosive medium material needs to be improved in order to corrosion; consider the strength and service life of high-pressure valve; cutting the valve seal; consider cutting pieces to consider attempts to prevent the medium is not clean.
Regulating valve maintenance organizations
In terms of structure selected, such as high-pressure valve, usually angle-type high-pressure valve, when the the pipeline installation required level selected through single-seat high-pressure valve;, high pressure butterfly valve can also be selected When the Caliber large leak strict requirements. The use of a particular or specified occasions, that is, the so-called dedicated valve. Caustic soda dedicated valve; valve designed for caustic soda evaporation system for the water treatment system (desalinated water) dedicated valve special valve for water treatment, as well as ammonium phosphate special valve for wet chlorine valve.
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