CDU System

The simplest path to high-density liquid cooling. Our compact CDU unlocks the full potential of your datacenter space.

Rack-mounted CDU

Product Introduction

Take control of your liquid cooling architecture with our rack-mount CDU. We have engineered an all-in-one thermal management system that integrates high-performance circulation pumps, plate heat exchangers, automated control valves, and a full suite of sensing and filtration hardware. Factory-tested and ready for rapid deployment, this solution significantly reduces field engineering efforts. Purpose-built for high-density computing environments, our CDU delivers the reliability and precision needed for next-generation data centers.

Advanced Control & Monitoring System

Equipped with a 7-inch industrial touchscreen, the system offers multi-level access control for secure management. The integrated smart control system provides real-time monitoring of temperature, humidity, and flow, while featuring advanced anti-condensation protection to ensure the safety and longevity of your liquid-cooled infrastructure.

Redundant & Durable Architecture

Engineered for mission-critical reliability, the system features a robust modular design with corrosion-resistant 304 (or higher) stainless steel piping. It supports optional dual-redundant power supplies and high-efficiency variable-frequency pumps that automatically adjust flow based on real-time load, ensuring uninterrupted, high-performance operation.

Flexible & Quiet Operations

The system adopts a high-efficiency modular design, allowing for seamless, on-demand capacity expansion. Powered by ultra-quiet, long-life motors, the unit minimizes noise impact while delivering precision cooling. The secondary-side filtration system features an ultra-wide 25–100μm range, providing superior flexibility for diverse high-density computing needs.

Intelligent Connectivity & Data Security

Designed for easy deployment, the system natively supports the Modbus RTU communication protocol and offers customizable monitoring protocols to suit your specific facility needs. Built-in non-volatile memory ensures that all critical operation parameters, alarm logs, and protection settings are automatically saved, preventing data loss during power outages.

In-Row CDU

In-Row CDU

Product Introduction

Designed for liquid cooling heat exchange management, the In-row CDU integrates essential secondary-side components—including VFD pumps, plate heat exchangers, motorized control valves, temperature/pressure sensors, filters, expansion tanks, flow meters, and online fluid replenishment—into a single system. Factory pre-installation and testing ensure minimal on-site commissioning and deployment time.

Intelligent Control & Precision Monitoring

The system features an intuitive 7-inch touchscreen with multi-level access control, driven by an advanced intelligent control framework that provides precise closed-loop regulation of temperature, flow rates, and differential pressure. It integrates proactive anti-condensation safeguards along with comprehensive fluid analytics—including real-time conductivity, turbidity, hardness, and pH monitoring—to guarantee optimal, continuous environmental stability within the liquid cooling loop.

Advanced Telemetry & Fail-Safe Data Protection

Equipped with a native Modbus TCP protocol and adaptable communication formatting, the unit seamlessly integrates into existing data center management platforms while offering custom monitoring configurations. The architecture incorporates robust built-in diagnostics, proactive alarming, and parameter self-protection, utilizing non-volatile data logging to ensure all operational parameters and historic alarm records remain fully intact without data loss during power outages.

Modular Scalability & Efficient Redundancy

Built on a future-proof modular design, the system supports seamless, on-demand capacity expansion to scale with evolving thermal loads. Reliability is maximized through dual-feed, high-efficiency variable frequency pumps that automatically modulate fluid dynamics based on real-time server demand, paired with dual-path power inputs to ensure uninterrupted operation and maximum system uptime.

Premium Engineering & High-Fidelity Filtration

Constructed with corrosion-resistant Grade 304 stainless steel or higher premium alloys, the fluid paths ensure long-term cooling medium purity and component integrity. The unit utilizes ultra-quiet, extended-lifespan motors to minimize vibration and acoustic noise across the server room, complemented by an ultra-wide secondary-side filtration design rated from 25 to 100 microns to deliver exceptional particulate protection for sensitive cold plates.

Rack Manifold

Rack Manifold

Product Introduction

Manifold is a water supply and return collection device used in liquid cooling systems to connect to liquid-cooled servers. It achieves rapid on-site connection and uniform distribution of coolant through factory pre-processing.

Application Scenario

  • Material & Pressure: Constructed from 304 stainless steel; pressure drop < 15 kPa.

  • Venting: Equipped with a 304 stainless steel automatic air vent valve.

  • Error Prevention: Color-coded rings on inlet and outlet pipes to prevent cross-connection and installation errors.

  • Fittings: Quick-connect fittings allow for instant engagement and disengagement, featuring self-sealing interfaces to guarantee a drip-free, dry disconnect.

  • Quality & Transport: Fully sealed and pressure-tested prior to dispatch; packaged in sealed containers to prevent the ingress of contaminants during shipping and handling.

  • Flow Distribution: Balanced flow design ensures the difference between the maximum and minimum flow rates across all branch ports does not exceed 10% of the minimum flow rate.

  • Manufacturing Process & Cleanliness: Features fully welded construction with welded nut bosses. The product undergoes a rigorous high-cleanliness treatment cycle—including pickling, passivation, solution annealing, ultrasonic cleaning, magnetic polishing, pure water rinsing, and drying—followed by comprehensive airtightness testing.

Rack Manifold Application scenario 01
Rack Manifold Application scenario 02

Manifold Hose Assembly

Manifold Hose Assembly

Product Introduction

Manifold is a water supply and return collection device used in liquid cooling systems to connect to liquid-cooled servers. It achieves rapid on-site connection and uniform distribution of coolant through factory pre-processing.

  • Hose Material Options: Available in a variety of materials, including PTFE, EPDM, and NBR.

  • Versatile Fittings: Optional connection fittings include self-sealing quick disconnects, manually sealed ball valves, and barbed fittings.

  • Flexible Configurations: Compatible with dual-female, dual-male, and male-to-female end configurations.

  • Broad Compatibility: Designed for use with a wide range of cooling media.

  • Ease of Use: Features a push-to-connect design for fast, single-handed coupling and uncoupling.

  • Visual Identification: Red and blue color-coding enables operators to quickly and accurately distinguish between inlet and outlet ports.

Application Scenario

Manifold Hose Assembly Application Scenario 01
Manifold Hose Assembly Application Scenario 02
Manifold Hose Assembly Application Scenario 03
Manifold Hose Assembly Application Scenario 04

Standard Cold Plate Liquid Cooling Connection Hose

SN Product Model Product Name Specifications Unit
1
RGNBR
NBR Connection Hose
Both ends available with stainless steel male/female threaded connections or barbed fittings.
pcs
2
RGEPDM
EPDM Connection Hose
Both ends available with stainless steel male/female threaded connections or barbed fittings.
pcs
3
RGPTFE
PTFE Connection Hose
Both ends available with stainless steel male/female threaded connections or barbed fittings.
pcs

Optional connecting hose material

Material Example Image Advantage Shortcoming Applicable Occasions
NBR

It features excellent oil resistance, high abrasion resistance, good heat resistance, and strong adhesion.
It has poor resistance to low temperatures and ozone, along with slightly lower insulation performance and elasticity.
Multi-purpose, suitable for oil, water, and other media.
EPDM

manifold软管组件-三元乙丙橡胶

It features excellent electrical insulation and good impact resilience, along with high resistance to aging, high temperatures, and chemicals.
It has a slow curing rate, poor self-adhesion and mutual adhesion, and overall poor processability.
Suitable for water, ethylene glycol-water antifreeze mixtures, etc.
PTFE

It features high chemical stability, a low coefficient of friction, and non-stick properties, along with aging resistance and excellent electrical insulation.
It has low elasticity and poor load-bearing capacity.
Multi-purpose, suitable for oil, water, and ethylene glycol-water antifreeze mixtures.

Quick Disconnect

Quick Disconnect

Product Introduction

  • Non-Spill Design (Dry Disconnect): Ensures zero fluid leakage during connection and disconnection, with minimal fluid residue (spillage/inclusion).

  • Low Pressure Drop: Delivers higher flow rates within the same footprint, offering significantly lower flow resistance compared to equivalent nominal diameter products.

  • Superior Corrosion Resistance: Utilizes optimized body and seal materials to withstand both fluid-induced and electrochemical corrosion.

  • Particulate Tolerance: Engineered to allow the passage of a specified level of solid particulates and debris without compromising performance.

  • Low Mating Force: Incorporates self-lubricating technology to significantly reduce the physical force required for coupling and uncoupling.

  • Compact Form Factor: Features a smaller overall envelope than equivalent-diameter products, making it ideal for confined spaces.

  • Lightweight Construction: Manufactured from high-strength, low-weight materials to minimize overall mass without sacrificing durability.

  • High Reliability: 100% factory-tested (end-of-line testing), boasting a lifespan of 10,000 mating cycles at a maximum operating pressure of 1.6 MPa.

Quick Connector - High Reliability Design
High-Reliability Design
  • Implementation of Industry Standard Databases:

    • Tolerances: ISO 2768-f, GB/T 1804-f

    • Sealing: ASTM D2000, ISO 3601-3

    • Components: ISO 8434-1, -6; ISO 11926-1, -2, -3

  • Optimized Seal Architecture: Features a protected seal design with engineered seal groove geometry. This optimized configuration eliminates the risk of seal failure and significantly enhances non-spill (dry disconnect) performance.

  • Rigorous Material Selection: Strict specification of materials, including specific seal compounds (grades), spring alloy grades, and precise wire diameters.

  • Precision Fluid & Mechanical Engineering: Optimized internal flow paths and precise spring force calculations ensure an extended service life over numerous mating cycles. This guarantees reliable dry-disconnect performance while maintaining effortless and user-friendly operation.

Quick Connector - Optimized Internal Structure Design
Optimized for Low Pressure Drop
  • Optimized Internal Architecture: Streamlined internal structural design effectively minimizes fluid friction and pressure drop.

  • Advanced Coatings: Self-lubricating aluminum alloy coatings further reduce flow resistance.

  • Superior Flow Performance: Delivers a significantly lower pressure drop compared to competing products of the equivalent nominal diameter.

System Integrity & Non-Spill Design
  • Flat-Face Valve Design: Utilizes a flush-face valve mechanism to ensure zero fluid spillage during mating and unmating.

  • Precision Engineering: Incorporates a precisely calibrated spring force alongside engineered structural geometries, such as optimized fluid relief grooves.

  • Protected Seal Architecture: The engineered seal-protection structure guarantees a highly reliable, leak-free (dry disconnect) connection while maintaining exceptional particulate and debris tolerance.

Application Scenario

Rack Manifold Application scenario 02
Quick Connector - Application Scenarios - Liquid-Cooled Supercharging Station

Secondary Loop Piping

Product Introduction

  • Prefabricated & Modular Design: Fully factory-assembled and prefabricated to eliminate complex on-site engineering and significantly minimize installation time.

  • Advanced Welding Technology: Utilizes precision TIG (Tungsten Inert Gas) welding, featuring single-sided welding with full double-sided root penetration for superior joint and structural integrity.

  • Robust Construction & Materials: Standardized with clamp connections for secure assembly. All wetted metal components, including valves, are constructed from premium 304 stainless steel. The system is engineered to withstand an operating pressure of no less than 1.0 MPa.

  • Ease of Maintenance: Equipped with blowdown and emergency drain ports strategically located at the lowest points of the system for convenient servicing and complete fluid evacuation.

  • Clear Visual Identification: Supply and return pipelines are distinctly color-coded and clearly labeled with flow direction indicators to ensure error-free operation and maintenance.

  • Intelligent Leak Detection: Comes standard with a locating (addressable) liquid leak detection sensor to rapidly and accurately pinpoint the exact location of any leakage.

Frequently

asked questions

Depending on where you are in your immersion cooling adoption process, we can provide:

  • Advice on where to start with the IT hardware
  • Advice on how to implement a demo unit, pilot program, or full-scale deployment
  • Design for the integration of immersion in your available space, taking advantage of your existing cooling methods with very little change to your infrastructure; or design for the integration of immersion for maximum efficiency

Absolutely! Sunnycore pods can take advantage of the existing cooling infrastructure or data.

If only air cooling is available, a local closed water loop is installed to release the heat into the room. Not the best option in terms of efficiency, but the easiest one in terms of capital investment if no water loop is available.

If a water cooling loop is available, whether it be chilled or warm water, just connect the immersion system to it. Or consider using the return water from your other water-cooled equipment, taking advantage of the ability to operate with higher water temperature.

Sunnycore pods can be pre-integrated off site, which saves time during the installation phase. Provided all the interconnecting services are in place, setting up the equipment – mechanical, electrical and monitoring -, and filling it up with the immersion fluids takes 2 to 6 hours, depending on the number of pods.

Sunnycore’s pods can be pre-integrated off site, which saves time during the installation phase. Provided all the interconnecting services are in place, setting up the equipment – mechanical, electrical and monitoring -, and filling it up with the immersion fluids takes 2 to 6 hours, depending on the number of pods.

Sunnycore’s products are designed to facilitate daily IT-related operations.

For a quick DIMM or power supply swap, the server just needs to be lifted to expose the target components. There is no need to deal with Thermal Interface Materials (TIMs).

For more elaborate operations, servers can be taken to a service room and easily dried off if preferred.​ Cabling-related operations are performed as you are accustomed to, thanks to our cable management features.

As for the fluid, expect scheduled checks to ensure it remains in perfect operating conditions. No fluid top-up or removal is required when extracting or inserting a few servers, or due to evaporation.

Sunnycore offers comprehensive trainings and certifications to get your staff up to speed to safely operate your immersion-cooled datacenter.

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