Data Center Cooling Valve Selection Guide for HVAC Systems

(Chilled Water, Condenser Water & Glycol Loop Applications)

WODE Valve Engineering Guide for EPC & MEP Contractors

Modern data centers are evolving rapidly due to AI computing, high-density servers, and liquid cooling technologies. As a result, HVAC cooling systems have become more complex and require highly reliable valve solutions.

This guide explains how butterfly valves are selected in data center cooling systems, focusing on chilled water loops, condenser water systems, and glycol-based secondary cooling systems.

---

1. Data Center Cooling System Overview

Modern hyperscale and AI-driven data centers typically use a multi-loop cooling architecture:

• Chilled Water System (Primary Cooling Loop)

• Condenser Water System (Heat Rejection Loop)

• Glycol / Secondary Cooling System (High-density AI cooling)

Each system requires different valve performance characteristics.

---

2. Chilled Water System (Primary Cooling Loop)

Operating Conditions

Function

The chilled water system removes heat from IT equipment through CRAH or AHU units.

Recommended Valve Type

WODE Data Center LT Butterfly Valve

Key Requirements

• Extended neck (LT design)

• Anti-condensation structure

• ISO 5211 actuator mounting

• Low torque operation

Material Options

• 304 Stainless Steel (standard data centers)

• 316 Stainless Steel (premium environments)

Typical Size Range

DN50 – DN600

---

3. Condenser Water System (Heat Rejection Loop)

Operating Conditions

Function

Transfers heat from chillers to cooling towers or dry coolers.

Recommended Valve Type

Corrosion-Resistant Butterfly Valve (Wafer / Lug Type)

Key Requirements

• High corrosion resistance

• Long-term outdoor operation

• Cooling tower compatibility

Material Options

• 304 / 316 Stainless Steel (preferred)

Typical Size Range

DN80 – DN1200

---

4. Glycol / Secondary Cooling System (AI Cooling)

Fluid Composition

Function

Used in CDU systems and direct-to-chip liquid cooling applications.

Recommended Valve Type

High-Sealing Butterfly Valve for Glycol Systems

Key Requirements

• Tight sealing performance

• Chemical resistance

• Low leakage design

Typical Size Range

DN25 – DN300

---

5. Why LT (Long Neck) Design is Critical

The LT extended neck structure is essential in data center HVAC systems because it:

• Provides insulation clearance

• Prevents condensation at actuator interface

• Improves maintenance access

• Supports thermal separation between pipeline and actuator

This design is especially important in chilled water systems operating at low temperatures.

---

6. Material Selection Strategy

---

7. Valve Size Strategy in Data Centers

Core Market Demand

DN100 – DN600 → Main distribution systems

Secondary Demand

DN50 – DN100 → Branch systems
DN600 – DN1200 → Main headers

AI data centers are increasing demand for large diameter flow systems.

---

8. EPC Selection Criteria

MEP contractors and EPC companies evaluate valves based on:

1. Pressure drop optimization (Cv performance)

2. Thermal insulation compatibility

3. Leakage class reliability

4. ISO 5211 actuator standard compliance

5. Long-term maintenance efficiency

6. Supply chain stability

---

9. WODE Data Center Valve Product Series

• DC-CHW Series → Chilled Water LT Butterfly Valve

• DC-CW Series → Condenser Water Butterfly Valve

• DC-GLY Series → Glycol System Valve

• DC-ISO Series → Isolation Valve Solutions

---

10. Target Markets (Southeast Asia Focus)

Primary Markets

• Malaysia (Johor Data Center Cluster)

• Vietnam (HCMC / Hanoi)

Secondary Markets

• Singapore

• Thailand

• Indonesia

---

11. Engineering Conclusion

Data center HVAC systems are specification-driven projects. Success depends on early design-stage inclusion within EPC and MEP engineering packages rather than price-based bidding.

The LT butterfly valve design plays a critical role in chilled water system reliability and insulation compatibility in modern data center infrastructure.