How pipeline valves fail
One published study measured how valves fail across upstream and midstream sites. Tap each bar segment to see what the failure means and how it is fixed.
Failure mode chart
Passing: 61% of failures
The valve is closed but product still crosses the seat. It cannot isolate the line.
Main causes: debris at the seat, scored sealing faces, dried sealant, hardened seals.
The fix: most passing valves can be sealed in service. Read the passing valve guide.
The same data as a table
| Failure mode | Share | What it means |
|---|---|---|
| Passing (seat leakage) | 61% | Closed valve still lets product through the seat |
| Seized (fail to operate) | 28% | Valve cannot be moved when needed |
| External leakage | 6% | Product escapes past the stem or body to atmosphere |
| Other | 5% | Corrosion, blockage or actuator faults |
Source: risk-based valve integrity study of upstream and midstream facilities, published by Valve World. Shares are from that study and are a strong guide for pipeline valve populations.
Two numbers matter most. Passing and seized valves together are 89% of all failures. Both are prevented by the same thing: planned cleaning, lubrication and sealant top-up while the valve stays in service. That is what our field programmes do.
Pipeline valve failure modes: passing 61%, seized 28%, external leakage 6%, other 5%. BTR VSI (India) Pvt Ltd, btrvsi.com/knowledge/valve-failure-modes/
Not sure which failure you have? Send the symptoms.
An engineer replies within 24 hours with the likely cause and next step.