
The Challenge of High Thermal Load in High Density Environments

As data centers grow denser and workloads scale faster, managing thermal load has become one of the most critical—and costly—challenges in infrastructure design. In these high-density environments, even small inefficiencies in cooling can lead to cascading issues: overheated equipment, reduced performance, and increased energy costs. Traditional CRAC and CRAH units often struggle to respond dynamically to fluctuating demand, especially when server utilization varies from rack to rack. Without proper flow regulation, cooling is distributed unevenly—causing server rack cooling to be inconsistent, with hot spots at the top and under-cooled zones below. The result? More energy, more risk, and more reactive maintenance. But it doesn’t have to be that way.

Stainless Steel Valves
Explore our full line of automatic balancing valves and stainless steel valves, designed to deliver consistent, efficient temperature control in data centers. Whether you’re managing a high-density server environment or optimizing CRAC/CRAH loop performance, Hays products provide the reliability and precision your system demands.

Essential for Hyperscale
Automatic balancing is essential in CRAC/CRAH loops to maintain consistent flow and prevent hot spots across the data center. As cooling demand shifts, automatic balancing valves adjust in real time—ensuring stable cooling, improving energy efficiency, and reducing strain on critical infrastructure. This self-regulating approach keeps systems running smoothly without the need for manual intervention.

Trusted in the Nation's Most Demanding Facilities
DATA CENTER COOLING VALVES
Insights on Cooling and Control

How to Optimize Cooling in High-Density Server Racks
In dense server environments, uneven cooling leads to hotspots, energy waste, and equipment strain. This article outlines best practices for rack cooling—like airflow containment, rack spacing, and the use of automatic balancing valves—to ensure even distribution in both new builds and retrofits in today’s data centre cooling systems.

Why Automatic Balancing Is Essential in CRAC/CRAH Loops
Without automatic balancing, CRAC and CRAH systems often face uneven flow and poor cooling. This article covers how self-regulating valves respond to pressure changes in real time, ensuring consistent performance. In large-scale data centre cooling, automatic balancing is key to stable rack temps, long-term efficiency, and reduced energy use.

The Role of Coolant Distribution Units (CDUs) in Data Center Liquid Cooling Systems
As data centers grow in density, air cooling alone is no longer enough. This article explores how Coolant Distribution Units (CDUs) enable efficient, scalable liquid cooling by separating IT and facility water loops. It covers CDU vs. non-CDU setups, key design factors, and why CDUs are essential for AI, HPC, and high-density environments.
WARRANTY
Built to last, backed for life. Our lifetime warranty ensures unwavering reliability, giving you confidence in every product. If an issue arises, we stand behind our craftsmanship—because quality isn’t just a promise, it’s our standard.
TECHNICAL DETAILS
Parameter | Specification |
|---|---|
Type | Automatic Balancing Valve |
Available Sizes | 1/2" to 36" |
Available Flow Rates | 0.5 to 35,000 GPM |
Available Materials | Brass, DZR Brass, Lead-Free Brass, Bronze,
Ductile-Iron, Carbon Steel, & Stainless Steel |
Operating Pressure Diff. Range | 2-80 PSID
(for most common flow rates) |
Operating Temperature | 32º F to 225º F |
Glycol Tolerance | Up to 70% |
Accuracy | ± 10 % |












