ȤӮ羺APP

ȤӮ羺APP ȤӮ羺APP
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Maintenance of control ȤӮ羺APP
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Maintenance of control ȤӮ羺APP

Since the control ȤӮ羺APP is a field instrument and directly contacts with various process media, regular maintenance and regular inspection must be carried out for the control ȤӮ羺APP, especially for special process medium and improper operation conditions. The following key maintenance and daily inspection are included in the maintenance.
1)
Inner wall of ȤӮ羺APP body
For the control ȤӮ羺APP used in high pressure difference and corrosive medium, the inner wall of the ȤӮ羺APP body is often impacted and corroded by the medium, so the pressure resistance and corrosion resistance must be mainly checked.
two
Valve seat
When the regulating ȤӮ羺APP is working, the inner surface of the thread used to fix the ȤӮ羺APP seat is easy to be corroded due to the medium penetration, which makes the ȤӮ羺APP seat loose. For the ȤӮ羺APP working under high pressure difference, check whether the sealing surface of the ȤӮ羺APP seat is damaged.
three
Spool
The ȤӮ羺APP core is the movable part of the regulating ȤӮ羺APP when it works. It is most seriously eroded and corroded by the medium, especially in the case of high pressure difference. The ȤӮ羺APP core should be replaced when it is seriously damaged. In addition, attention should be paid to whether the ȤӮ羺APP stem has similar phenomenon or the connection with the ȤӮ羺APP core is loose.
four
Diaphragm O Ring and other gaskets
Inspection of actuator in diaphragm O Check whether the sealing ring and other gaskets are aged and cracked.
five
Packing packing
If polytetrafluoroethylene is used, attention should be paid to the aging and damage of the mating surface, and it should be replaced if necessary. If asbestos rope is used as filler, lubricating oil should be added frequently.

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