disintegration of quick coupling · 2017. 9. 6. · quick coupling the result: significant water...
Post on 31-Mar-2021
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DISINTEGRATION OF QUICK COUPLINGDISINTEGRATION OF QUICK COUPLING
THE RESULT: SIGNIFICANT WATER DAMAGE
THE RESULT: SIGNIFICANT WATER DAMAGE
COMMON CAUSESCOMMON CAUSES
1. Imperceptible Leakage attacking one of the QC Bolt
2. Shallow Groove causing QC to remain partly open.
3. QC that was not fully closed.
4. Groove Too Deep.
5. Pressure Surge.
6. Combination of the above
Case No. 1- Surface Imperfection causing Leakage below the Seal and resulting 4” QC Failure
Case No. 1- Surface Imperfection causing Leakage below the Seal and resulting 4” QC Failure
Failure of 4” QC due to corrosion
Which was caused by water seeping from the Pipe. .
Water Damage to stored Books.
The Quick-Coup.
The Quick-Coup.
The bolt was consumed by the Corrosion
The 4” Pipe: Extensive Corrosion
Imperfection enabled water seeping below the Seal.
Example No. 2- Surface Imperfection causing Leakage below the Seal
Example No. 2- Surface Imperfection causing Leakage below the Seal
Imperfection in the Pipe Seam.
Imperfection in the Pipe Seam.
Imperfection in the Pipe Seam.
Water Seeping Direction
The Result: Multiple Dripping
Case No. 3- Internal Leakage causing disintegration Case No. 3- Internal Leakage causing disintegration
The Bolt Was Destroyed by Corrosion
The Bolt Was Destroyed by Corrosion
The QC was just Replaced. The Cause remained.
Case No. 4- Disengaging 4” Pipe from 4” Quick Coup Causes Significant Water Damage
Case No. 4- Disengaging 4” Pipe from 4” Quick Coup Causes Significant Water Damage
Too Deep Groove helped the failure.
Bolt Was Left Open
The Contractor did not close the QC properly leaving a significant Gap between the two parts of the QC
Case No. 5- Disengaging 2” Pipe from 2” Quick Coup Causes Significant Water Damage in Apartment in High Rise Building
2” Pipe within the Gypsum wall in an apartment. Following a repair of a failed QC
The 2” Pipe section and the QC were replaced
Too deep Grooves.
Too Deep Groove caused the Dis-engagement
Pressure exceeded 225PSI
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