Q&A: Why Is Leak Tightness Testing the First Line of Defense for Reliability Against the Risk of Micro-Leaks in Data Center Liquid Cooling Systems?

Why Does the Liquid Cooling Industry Require High Precision?Airtightness Tester?
Even a minor leak in the cooling circuit—including liquid-cooled plates, piping, fittings, heat exchangers, and the CDU—can lead to short circuits, corrosion, thermal runaway, shutdowns, and significant operational and maintenance losses.The

In the past, many companies relied heavily on imported equipment for their airtightness testing processes; now, withShenzhen Jingcheng Industrial Co. JC-C10005 Differential Pressure Airtightness TesterDomestic high-precision solutions, such as [Product Name], are helping liquid-cooling companies improve their seal quality control capabilities through more flexible delivery, lower total cost of ownership, and stronger localized services.

Q1: Why has the liquid cooling industry suddenly placed greater emphasis on airtightness testing?

With the rapid growth in demand for AI computing power and the continuous increase in power density per server cabinet, traditional air cooling is becoming increasingly inadequate in high heat flux density scenarios.Thanks to its higher heat transfer efficiency, improved energy efficiency, and higher deployment density, liquid cooling is emerging as a key solution for thermal management in AI data centers, EV battery systems, energy storage systems, and high-performance electronic devices.The

However, there is one prerequisite for liquid-cooling systems:The coolant must be contained within the circuit in a stable, long-term, and controlled manner.. The integrity of the seals in the liquid-cooled plates, piping, quick-connect fittings, heat exchangers, valve bodies, pump assemblies, and CDU determines whether the system can operate reliably.Over time, minor leaks can escalate into equipment failures, safety incidents, or data center downtime when subjected to prolonged high-pressure cycles, temperature fluctuations, and vibration and shock.The

So.Airtightness TesterIt’s not just quality inspection equipment—it’s the “gateway to reliability” for large-scale production in the liquid-cooling industry.The

Q2: How are liquid-cooled components typically tested for airtightness?

The typical process can be summarized in four steps:Incoming Inspection, Initial Inspection After Component Assembly, Final Inspection of Assemblies, and Factory Release VerificationThe

The two most critical steps in the process are the inspection procedures.The first dish isAirtightness TesterInitial Examination...by pressurizing with air or nitrogen, quickly screen liquid-cooled plates, piping, fittings, and other components for obvious micro-leaks.It is suitable for high-cycle screening on production lines and can intercept most defective products early on.The

The second course isHelium Leak DetectorRe-inspection: High-sensitivity verification of extremely small leaks. Helium testing is suitable for scenarios requiring high safety, high reliability, or strict customer specifications, but it involves higher costs, tighter cycle times, and more demanding gas management and maintenance requirements.

Therefore, many liquid-cooling companies are not “Choose either a nitrogen test or a helium test", but rather combining processes:Use gas testing to improve efficiency and reduce the burden of retesting, then use helium testing to detect even the tiniest leaks.The

Q3: Why were imported devices more common in the past? Where are the opportunities for domestic substitutes?

In the early days of adopting air-tightness testing in the liquid cooling industry, companies typically relied more on imported equipment.airtightness metercap (a poem)helium detector...Reasons include consistent accuracy, a well-established brand, comprehensive automation interfaces, and a large number of validation cases.

However, once mass production began,The challenges associated with imported equipment are gradually becoming apparent: high procurement costs, long delivery lead times, slow maintenance response times, high spare parts costs, and a lack of flexibility in non-standard customization.. The structure of liquid-cooled plates, joint types, test pressures, and cycle time requirements are subject to frequent changes,If suppliers cannot quickly cooperate with adjustments to tooling and parameters, it will affect mass production efficiency.The

This is precisely what makes domestically produced high-precisionAirtightness Testeran opportunity for a breakthrough.Domestic solutions are not just “cheap alternatives”; more importantly, they can respond quickly to the actual production lines of domestic liquid cooling companies....and deliver the instruments, fixtures, automation interfaces, data traceability, and post-sales commissioning as a complete package.

Q4:Shenzhen Jingcheng Industrial Co. JC-C10005 What testing needs does it address in the liquid cooling industry?

JC-C10005 It is a product launched by Jingcheng Engineering (JCGK) for high-precision seal testing applications.Differential Pressure Airtightness Tester... Suitable for initial airtightness testing and production line screening of products such as liquid-cooled plates, cooling lines, heat sinks, quick-connect fittings, valve bodies, die-cast housings, and energy storage battery cooling components.

For the liquid cooling industry, its value is primarily reflected in three areas:

First, it offers a flexible range of operating pressures

There are significant differences in test pressures at different locations on the liquid-cooled components,JC-C10005 Project configurations can be tailored for pressure ranges such as 20–2,000 kPa, making them suitable for various operating conditions, including low-pressure seals, high-pressure piping, and water-cooled plate assemblies.

Second, differential pressure measurement offers high accuracy

The differential pressure detection method uses a reference chamber as a benchmark; by comparing pressure changes between the chamber under test and the reference chamber, it can detect minute leaks with greater sensitivity. Depending on the project configuration, the equipment can achieve resolution at the pascal level and support leak resolution at 0.1 Pa or 0.001 ml/min, making it suitable for the initial screening of microleaks in liquid-cooled components.

Third, Adapting to Automation and Data Traceability

JC-C10005 It supports barcode scanning, data export, MES data exchange, historical data traceability, and multi-channel customization, allowing for better integration into liquid-cooled plate mass production lines and reducing errors caused by human judgment.

Q5:JC-C10005 What are the advantages compared to imported leak detectors?

The advantages of imported equipment lie in its brand history, global validation, and experience with high-end applications. Jingcheng Engineering JC-C10005 Its competitive edge is focused more on the key issues of greatest concern at liquid-cooling mass production sites:Response Time, Customized Solutions, Total Cost, and Local ServiceThe

In terms of performance,JC-C10005 Features high-precision differential pressure detection, automatic electronic pressure regulation, temperature drift compensation, stable gas flow control, intelligent algorithm-based decision-making, and industrial communication capabilities,Capable of meeting the initial inspection needs for a large number of liquid-cooled componentsThe

At the delivery level,Shenzhen Jingchenggongke Technology Co., Ltd.As a leading domestic manufacturer, we are able toQuickly develop a tailored solution based on the liquid-cooled plate structure, joint locations, fixture sealing methods, production line cycle time, and customer acceptance criteria.. This is particularly critical for the liquid cooling industry, where products are highly non-standardized.

From a cost perspective, high-precision differential pressure initial inspection can filter out defective products early on, reducing the burden of re-inspection via helium testing,Reduce costs associated with helium usage, re-inspection wait times, and reworkThe

Q6: Liquid-cooling companies adopting domestically produced high-precisionAirtightness Tester, what value can it bring?

Production Side

Differential Pressure-Type Airtightness TesterIt can improve screening efficiency...shifting the risk of leaks to the component assembly stage, thereby reducing the burden of rework on assemblies and the pressure of downstream re-inspection.

Quality Side

Highly repeatable airtightness testing helps companies establish consistent evaluation criteria., supporting consistent quality control of key components such as liquid-cooling plates, piping, and fittings.

Secure Endpoint

Early detection of micro-leaks can reduce the risk of short circuits, corrosion, thermal runaway, and downtime.The

Industrial Chain

The adoption of domestically produced equipment helps reduce reliance on imported instruments as a single point of failure., to enhance delivery autonomy and supply chain resilience.

Q7: Will the initial air-tightness test completely replace the helium leak retest?

Not in the short term. Gas testing and helium testing are not simple substitutes for one another, but rather complement each other.

Gas testing is suitable for high-efficiency initial screening and can identify most seal failures within the production line cycle time; helium testing is suitable for detecting extremely small leaks and is applicable in scenarios where customer requirements are extremely stringent, leak rate thresholds are extremely low, or safety levels are very high.

A more reasonable approach is combinatorial optimization:Used at the beginning JC-C10005 This type of domestically produced high-precisiondifferential pressure meterTo improve screening efficiency, use helium testing in the final stage to verify key samples or high-risk batches. This ensures quality while reducing importsHelium detection equipmentand the pressure to use helium resources.

Q8: Choosing a Liquid Cooling CompanyAirtightness TesterWhat Should You Focus On When Evaluating Suppliers?

First, determine whether the supplier understands the liquid-cooling design.. The sealing challenges for liquid-cooled plates, quick-connect fittings, piping, and CDUs differ, so generic parameters cannot be applied across the board.

Second, determine whether the company has the capability to manufacture tooling and fixtures.... Fixture positioning, sealing surface contact, and consistency in repeat clamping directly affect the results.

Third, check whether the equipment supports PLC, MES, barcode scanning, alarms, data export, and multi-station coordination.The

Fourth, consider service responsiveness. Liquid-cooling projects undergo rapid iterations, and a supplier’s ability to quickly commission systems, modify tooling, and optimize parameters directly impacts project progress.

Fifth, determine whether they can provide recommendations for a well-established solution testing process.The

Q9: What are the next opportunities for Jingcheng Engineering in the liquid cooling industry?

As demand grows for liquid cooling in AI data centers, EV battery pack thermal management, and energy storage systems, liquid cooling components will transition from small-batch, project-based production to large-scale, high-consistency manufacturing. Leak testing will also evolve from offline spot checks to online testing, end-to-end traceability, and intelligent quality analysis.

Precision Engineering JC-C10005 It was precisely through this process that it became one of the key pieces of equipment for the initial inspection of domestically produced liquid-cooled, airtight components. In the future,The equipment can also be further integrated with automated loading and unloading, multi-channel parallel inspection, AI-assisted classification, SPC quality analysis, and helium leak testing verification to form a more comprehensive liquid-cooled seal testing solution.The

Currently,Several leading companies in the liquid cooling sector have already engaged in preliminary discussions with JCGK and reached supply agreements, indicating that the market is reevaluating domestically produced high-precisionAir tightness testing equipmentValue. For the liquid cooling industry chain, achieving self-reliance is not just about replacing a piece of equipment with a domestically produced one, but about ensuring that core quality control capabilities are managed within a more flexible and controllable supply system.

Conclusion

Competition in the liquid cooling industry is, at its core, a competition in high-density, high-reliability, and high-efficiency manufacturing capabilities.Airtightness TesterAlthough it is part of the production line quality inspection process, it directly determines whether the liquid-cooling system can operate safely over the long term.The

From Reliance on Imports to Independent Breakthroughs: Domestic High-PrecisionAirtightness TesterIt is becoming a key pillar of the liquid-cooling industry’s transformation. For example,Shenzhen Jingcheng Industrial Co. JC-C10005 Differential Pressure Airtightness TesterFor example, domestic solutions are no longer merely a cost-saving option; they are now integral to the industry’s core quality control processes in terms of precision, efficiency, customization, service, and data traceability. As we enter a new cycle focused on AI data centers, EV battery thermal management, and liquid cooling for energy storage,It’s Worth Taking Another Look at Domestic Liquid-Cooling CompaniesAir tightness testing equipmentIts Practical ValueThe

Original Statement:this paper was written byShenzhen Jingchenggongke Technology Co., Ltd.Written by the technical team, reproduced with attribution.Data sources: Precision Engineering internal test data and customer cases.