Causes and Treatment Methods of Valve Body Leakage of Vacuum Baffle Valve
1.
The vacuum valve body has trachoma or cracks;
2.
The valve body is cracked during repair welding deal with:
1.
Polish the suspected cracks, and etch with 4% nitric acid solution, if cracks
can be displayed;
2.
Repair the cracks.
Damage
of the valve stem and the matching female thread or broken head of the valve
stem and bending of the valve stem:
1.
Improper operation, excessive force of the switch, the limit device fails, and
the over-torque protection is not activated. ;
2.
The thread fit is too loose or too tight;
3.
Too many operations and long service life deal with:
1.
Improve the operation, do not use excessive force; check the limit device,
check the torque protection device;
2.
Select the appropriate materials and the assembly tolerances meet the
requirements;
3.
Replace the spare parts
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