Hello, this is VALVEPARK.
Today we will share an after-sales service case
we handled at Company H's R&D Center in Daejeon.
We will walk you through what we found and how it was resolved, step by step.
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This service case took place at Company H, located inside the Daejeon R&D Center.
The installed product was as follows.
[DOWVALVE] High-Performance Butterfly Valve (SUS304, automated, 10K)
Industrial valve solutions, easy and fast! Get every industrial valve and expert technical solution in one stop, without an on-site visit!
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Product: HP B/F (10K, SUS304)
Size: 100A
Quantity delivered: 99 units total
The valves were installed in 9 sections, with 11 units in each section.
During post-installation commissioning, leakage occurred on 11 of the 99 units.
All of the failures were concentrated in the 11 valves located in SECTION 9.
Given this pattern, it was hard to attribute the issue to product quality alone,
and we judged it most likely to stem from an installation environment or work process specific to SECTION 9.
Our VALVEPARK technical team visited the site, ran tests, and analyzed the cause as follows.
1. The same issue was concentrated only in a specific area, including SECTION 9.
2. The required post-installation internal flushing had been skipped, leaving residue inside the line.
3. Welding debris and metal chips were found inside the piping, where they had caused damage.
4. As a result, the internal seat and seal were damaged, leading to leakage.
※ In other words, the core issue lay in the installation process, not in the product itself.
We took the following actions on the 11 affected units.
✔ Full seat replacement on all 11 units
✔ Full inspection performed after replacement ➡ no leakage confirmed on any unit
✔ Reinstalled on site and re-commissioned ➡ no further abnormalities
With that, the customer's quality standards were met and the facility was able to return to normal operation.
The core cause of this case was confirmed to be the omission of internal flushing during installation.
Accordingly, the issue was concluded to have stemmed from inadequate installation process management.
We restored the system to normal through technical support,
and provided a technical guide to prevent recurrence.
This case was a clear reminder
that essential post-installation steps such as flushing and foreign-object removal must be carried out thoroughly.
Going forward, VALVEPARK will continue to keep customer equipment running in peak condition,
responding quickly and accurately whenever issues arise.
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Did you know?
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If you want to save on shipping, drop by the VALVEPARK site and find the products that fit your job site 🚚💨
VALVEPARK - Everything for industrial valves
Industrial valve solutions, easy and fast! Get every industrial valve and expert technical solution in one stop, without an on-site visit!
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