Flange valve failure troubleshooting method
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Release Time：2018-01-12
Flange valve failure causes and solutions there are four of the most common fault phenomenon, generally for the valve middle flange leakage, stuffing box leakage, sealing surface leakage, stem rotation is not flexible. The reasons and solutions for the leakage of the middle flange of the 1.: 1. The flange connecting bolts are not tightened or the tightness is uneven. Solution: loosen the bolts and tighten them evenly and symmetrically again. 2. Gasket damage or failure. Solution: replace the gasket. 3. There is dirt between flange sealing surfaces. Solution: Remove the cleaning flange. 2. stuffing box leakage: 1, packing loose or packing gland bias. Solution: the packing gland should be uniform pressure
Flange valve failure causes and solutions there are four of the most common fault phenomenon, generally for the valve middle flange leakage, stuffing box leakage, sealing surface leakage, stem rotation is not flexible.
Leakage causes and solutions of the middle flange of the 1:
1. The flange connection bolts are not tightened or unevenly tightened. Solution: loosen the bolts and tighten them evenly and symmetrically again.
2. Gasket damage or failure. Solution: replace the gasket.
3. There is dirt between flange sealing surfaces. Solution: Remove the cleaning flange.
2. stuffing box leakage:
1. The packing is loose or the packing gland is pressed. Solution: the packing gland should be evenly pressed.
2. Filler failure. Solution: replace the new packing.
3. sealing surface leakage:
1. There is dirt between the sealing surfaces. Solution: Clean the sealing surface.
2. The sealing surface is damaged. Solution: grinding repair sealing surface or replace the sealing surface.
4. stem rotation is not flexible:
1. The valve core cover connection angle is too tight or the bearing is worn. Solution: adjust the tightness of the packing or replace the bearing.
2. There is debris or dust between the stem or stem nut, and the stem or stem nut is damaged. Solution: Disassemble and clean the stem, if damaged, update the stem or stem nut.
3. The opening and closing device fails. Solution: according to the device instructions to check the fault after maintenance.
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