As AI workloads push rack densities higher, cooling has become mission critical, and so has the ability to isolate parts of it without disrupting live IT loads. In a recent Revolutionizing Energy webinar, Emerson’s Karan Eyunni, Marketing Manager, Asia-Pacific Region for Isolation Valves, and Jay Lee, Global Product Manager, Isolation Valves, discussed how isolation valves support uptime, maintainability, and efficiency in Asia Pacific’s fast-growing data center market.
Why It Matters
Cooling is the backbone of any data center, and Tier 3 and Tier 4 facilities run it through parallel loops. Isolation valves let operators take a pump, chiller, or air handler offline while cooling continues through an alternate path. Valve pressure drop also adds to pump load and Power Usage Effectiveness (PUE), so these choices compound across a facility.
Key Takeaways
- Isolation valves enable concurrent maintainability by segmenting parallel chilled water, condenser water, and refrigeration loops.
- In liquid and immersion cooling, fast isolation limits the scope of leaks near IT equipment.
- Keystone stub shaft butterfly valves deliver 30 to 50% higher flow coefficients than conventional through-shaft designs in smaller diameters.
- Lug body designs allow safe dead-end isolation without extra blinds or spool pieces.
- Asia Pacific is building larger, denser facilities, with Tier 3 becoming the minimum standard.
Where Isolation Valves Fit in the Cooling Chain
Jay explained that Keystone valves are used throughout the cooling and utility value chain, particularly in water-based and hybrid architectures. In chilled water loops, Keystone butterfly valves sit on headers, branch lines, and at air handlers or distribution units serving IT halls, where reliability and low pressure loss are expected.
Condenser water and refrigeration loops run hotter, are open-loop, and have tougher water quality. Lug-style butterfly valves are common here because they support end-of-line service in parallel cooling paths. On pump discharge lines, spring-assisted Keystone check valves help prevent reverse flow, water hammer, and mechanical damage during rapid pump trips. The same valves also serve utility applications in onsite power plants.
Design Features Aligned to Data Center Priorities
Jay said the portfolio is aligned with data center design priorities, not industrial specifications alone. Higher flow coefficients (Cv and Kv values) reduce pressure drop so pumps use less energy, and small gains at each valve add up to measurable PUE improvements over a facility’s life.
Vulcanized seats support fully rated end-of-line service and vacuum conditions, while reinforced, metal-backed options address maintainability preferences. Emerson also publishes dynamic performance data showing how its swing check valves close quickly to reduce pressure surges. The valves support in-line maintenance, silicone-free assembly, and automation readiness.
Asia Pacific Growth Raises the Stakes
Jay cited projections that the Asia Pacific data center market will grow from roughly US$65 to 100 billion in 2024 to more than US$150 to 175 billion by 2030, a compound annual growth rate of 8 to 14% depending on segment. AI-optimized facilities may grow above 20%, and regional liquid cooling is growing at 25 to 26% annually as rack densities reach 50 to 100 kilowatts.
For valves, that means more units per megawatt and rising demand for automation, remote operation, leak containment, and fast isolation, with Tier 4 expanding in financial services, cloud, and government.
Learn More
Watch the full webinar, then read Powering the Next Generation of Data Centers for Emerson’s broader data center automation portfolio, spanning IT spaces, cooling, utility systems, and backup and primary power. For more on power generation, read the eBook Optimizing Efficiency of Power Production with Valves, Actuators, and Regulators and visit Valve Solutions for Combined Cycle Power Plants.
