Challenging Working Condition Breakthrough Case — Resin Industry

2025-12-13

In 2019, a new materials company in Anhui Province encountered persistent issues with the bottom isolation valve of its reactor, including frequent blockage, internal leakage, and even ceramic ball fracture. As a critical component in the process line, any internal leakage directly resulted in off-spec products; blockages required frequent cleaning, significantly increasing maintenance costs; and in extreme cases, ball fracture could contaminate an entire batch of raw materials, leading to substantial losses.

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Process Conditions & Root Cause Analysis

Field investigation revealed that the reactor slurry contained a certain concentration of Hydrochloric Acid, imposing extremely stringent requirements on valve sealing performance—zero leakage was mandatory.

The plant had originally selected a bi-directional sealing Ceramic Ball Valve from another brand. However, due to the self-polymerizing nature of the slurry, material gradually accumulated in the valve dead zones during long-term operation. This accumulation proved to be the fundamental cause of blockage, internal leakage, and ceramic ball damage.

After receiving customer feedback, our engineering team conducted a comprehensive analysis based on both material properties and failure modes. We concluded that under this specific operating condition, the bi-directional sealing Ball Valve structure could not effectively avoid material retention. Consequently, we recommendeda single-seat, single-sealing bottom valve design, which ensured zero leakage while fundamentally eliminating dead-zone material buildup.

Implementation & Continuous Optimization

After a six-month trial period, the customer fully adopted Jintai Meilin (KOWOV) bottom isolation valves in a new project in June 2020, and they have remained in continuous service ever since.

Throughout the cooperation, we maintained close technical communication with the customer and continuously optimized the valve design—evolving from an initial ball-type structure to an advanced C-type ceramic core design, achieving iterative product upgrades tailored to real operating conditions.

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Performance Comparison

Item	KOWOV CeramiC Valve	Other Brand CeramiC Valve
Structure	C-type	Ball-type
Materials	Structural ceramic + Duplex 2205	Structural ceramic
Sealing Class	Zero leakage	Zero leakage
Cleaning Interval	12 months	3 months
Cleaning Time	Not required	12–18 hours

Replication in Other Projects

2023 | Zhejiang Province
A new materials company experienced identical process conditions and media characteristics. Self-polymerizing slurry again caused ceramic ball fracture and internal leakage. Recall: After implementing our improved bottom isolation valve, the reactor system achieved stable and reliable operation.

04 Challenging Working Condition Breakthrough Case — Resin Industry

2024 | Inner Mongolia
Another new materials producer reported similar failures within just six months of operation. We promptly supplied a new-generation valve for on-site testing. Although minor adaptation issues occurred initially due to subtle differences in operating conditions, targeted design optimization and close technical support quickly resolved them. As a result, in the 2025 new project tender, our company successfully won the entire bottom valve package.

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Key Takeaways

These cases clearly demonstrate that not all Ceramic Valves perform equally under harsh operating conditions. Significant differences exist between brands in terms of product quality, structural adaptability, and long-term reliability.

While our solutions have gradually earned customer recognition, this does not imply that other brands are incapable of delivering quality products. The critical factor lies in accurate understanding of process conditions andscientifiC Valve selection, based on a comprehensive evaluation of product design, material performance, and the supplier’s technical and service capabilities.

Final Recommendation

When selecting ceramiC Valves for demanding applications, users should look beyond performance parameters and price alone. Equal importance should be placed on:

Technical expertise and engineering depth
Proven industry track record and market reputation
Integrity and responsiveness
Long-term after-sales and technical support capability

Only through such a holistic evaluation can ceramic valves deliver safe, stable, and long-term operation under harsh conditions—providing a solid foundation for sustainable production and high-quality development.