Causes and Treatment Methods of Valve Body Leakage of Vacuum Baffle Valve
1. The 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
