Liquid Cooling Valves for Data Centers (2026)

What Is CDU Liquid Cooling?

As AI servers become more powerful, traditional air cooling can no longer handle the heat density of modern data centers. Liquid cooling has become the standard for high-density computing clusters in 2026.

The CDU (Coolant Distribution Unit) is the heart of a liquid cooling system. It distributes chilled coolant from the central plant to individual server racks and heat exchangers. Inside every CDU, there are dozens of valves, fittings, and piping components that control flow direction, pressure, and temperature.

We manufacture stainless steel ball valves, butterfly valves, check valves, Y-strainers, and pipe fittings specifically for liquid cooling CDU applications.

Why Stainless Steel Valves for Liquid Cooling?

Liquid cooling systems use water, glycol mixtures, or dielectric fluids. These fluids are clean but require valves that meet strict requirements:

Bubble-tight shutoff: A single coolant leak can shut down an entire data center rack. Our valves are shell and seat tested to 10 bar working pressure with 100% leak inspection.
Corrosion resistance: Stainless steel 304/316L construction prevents rust and contamination of the coolant loop.
Precise flow control: Smooth operation and tight shutoff ensure consistent coolant flow to each server.
Cleanliness: Internally polished surfaces prevent particle buildup and maintain coolant purity.

Our Liquid Cooling Valve Product Line

We supply a full range of valves and piping components for CDU liquid cooling systems:

Technical Specifications

Parameter	Specification
Body Material	CF8M (316) / CF8 (304) Stainless Steel
Pressure Rating	PN16 / Class 150
Temperature Range	-20°C to 180°C
Size Range	DN15 (1/2″) to DN300 (12″)
End Connections	Flanged / Threaded / Wafer / Butt-Weld
Certification	ISO 9001:2015 / CE / API

Testing & Certification

Every valve we supply for liquid cooling data center applications undergoes rigorous testing:

Shell pressure test: 1.5 times working pressure, held for 60 seconds.
Seat leakage test: 1.1 times working pressure, bubble-tight acceptance per API 598.
Fire-safe test: Optional API 607 certification for hydrocarbon service.
Cleanliness inspection: Internally polished to prevent particle contamination in coolant loops.

Our factory is ISO 9001:2015 certified, and we provide EN 10204 3.1 material test reports (MTR), pressure test certificates, and third-party inspection (SGS / Bureau Veritas) upon request.

How to Select Valves for Liquid Cooling Systems

When selecting valves for CDU liquid cooling applications, consider these factors:

1. Fluid type: Water, water-glycol mixture, or dielectric fluid. 316L stainless steel is recommended for glycol and long-term service.
2. Pressure rating: Most CDU systems operate at 6–10 bar. PN16 / Class 150 rated valves are standard.
3. Size range: Main distribution lines typically DN50–DN200, while branch connections to server racks are DN15–DN50.
4. End connections: Flanged for main lines, threaded or union connections for branch connections.
5. Actuation: Manual operation for most applications; pneumatic or electric actuation for automated CDU control.

Not sure which valve type fits your project? Contact our engineers with your specifications, and we will recommend the right valve type for your liquid cooling system.

📚 Further reading: CDU Valve Selection Guide | Bubble-Tight Shutoff Requirements | CDU Valves Complete Guide

Typical Applications

AI Data Centers: High-density GPU clusters requiring direct liquid cooling.
Cloud Service Providers: Hyperscale data center cooling systems.
Edge Computing: Local edge data centers with compact CDU units.
Telecom Hubs: 5G base station cooling and telecom equipment rooms.

FAQ

Why Choose Chuanglan Valve?

We are a stainless steel valve manufacturer based in Wenzhou, China—the heart of China’s valve industry. With 15+ years of export experience, we supply valves and pipe fittings globally to Southeast Asia, the Middle East, Europe, and South America.

Our factory has CNC machining lines, an in-house QC team, and ISO 9001:2015 certification. We understand the strict requirements of data center liquid cooling systems: bubble-tight shutoff, fast delivery, and consistent quality.

We directly serve EPC contractors and CDU system integrators in Southeast Asia and the Middle East. With fast delivery options, we help data center builders skip intermediate distributors and get factory-direct stainless steel valves for new AI computing projects.

Whether you are a CDU integrator, a data center construction contractor, or an OEM looking for a valve supplier you can count on in China, we can support your project with competitive pricing and fast lead times.