The proper maintenance of control valve

      Control valve maintenance

      The control valve has the advantages of simple structure andreliable action, but because it is in direct contact with the process medium, its performance directly affects the quality and environmental pollution, so the control valve must be regular maintenance and periodic maintenance, especially for the use of harsh conditions and important occasions, more attention should be paid to repair work. Inspection of key parts:

     1.The inner wall of the valve body

For the use of control valve in the high differential pressure andcorrosive media occasions, diaphragm valve body wall,diaphragm valve often media impact and corrosion, we must focus on examination of pressure, corrosion of the situation.

      2.The valve seat

Control valve work, due to media penetration, fixed seat screw used in the inner surface susceptible to corrosion Ershi seat loose, inspection should be noted. Working under high pressure differential valve, check valve seat sealing surface is alsowashed.

      3.The valve core

     The valve to regulate the work of moving parts, by the media,erosion, corrosion is the most serious, when the repair parts to carefully check whether the valve is corrosion, wear and wear,especially in the case of valve pressure differential is moreserious (due to cavitation phenomena), should be noted. Valve replacement should be badly damaged, the stem should also pay attention to whether a similar phenomenon, or connected with the spool loosening.

       4.The diaphragm

     "O" - rings and other seals. Diaphragm control valve should be seized, "O" - shaped sealing gaskets are aging, cracking.

      5.Packing

     It should be noted PTFE packing, sealing grease is aging, with the surface is damaged, should be replaced when necessary.

Spring Chain Tensioner

     Regulating valve and control valve, the main types of actuators,by accepting the control unit regulating the output control signal,using power operated to change the fluid flow. Control valveactuator and valve are generally composed. If you press it with the implementing agencies use the power, control valve can be divided into pneumatic, electric, hydraulic and three, that is the source of compressed air powered pneumatic valve, using electricity as the power source of electric control valve, the liquid medium (such as oil) pressure powered electric hydraulic controlvalve and, in addition, according to their functions andcharacteristics, and electromagnetic valves, electronic, intelligent,fieldbus regulating valve.
      Chinabase is able to offer custom, cost-optimized solutions in accordance with customer drawings - such as ready-to-install machine parts and profiles - in addition to our standard products. Our internal Application Technology department and field staff are happy to provide free advice on custom solutions.

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