Description
Discover UQD, UQDB, and BMQC liquid cooling connectors—OCP-compliant solutions designed for data centers, EVs, and high-performance liquid cooling systems.
Amphenol Industrial Operations introduces its complete range of liquid cooling connectors—the UQD, UQDB, and BMQC Series—designed to meet the demanding thermal requirements of modern data centers, AI platforms, EV charging systems, and energy storage. These rugged, stainless-steel couplings ensure leak-free operation, quick installation, and industry-standard interoperability. These couplings are fully compliant with the Open Compute Project (OCP), offering leak-free operation, fast installation, and long-term durability.
UQD – Universal Quick Disconnect
Engineered per OCP standards, UQD connectors offer aerospace-grade sealing, bidirectional dry-break valves, and fast plug-in installation. Available in sizes 02–08, with inline and right-angle options, UQD supports a variety of barb and threaded terminations.
UQDB – Universal Quick Disconnect Blind-Mate
UQDB expands on the UQD platform with blind-mate technology, including 1 mm radial self-alignment for tool-free installation in tight spaces. These couplings enhance installation speed while maintaining reliable sealing under pressure.
BMQC – Blind Mate Quick Connector (Open Rack V3)
Developed to meet the OCP Open Rack V3 standard, BMQC connectors offer +/- 5 mm radial and +/- 2.7° angular misalignment tolerance—ideal for high-density data centers and server manifolds. With 100% helium-leak testing and robust stainless steel construction, BMQC delivers unmatched reliability.
Coolant Compatibility and Efficiency
All connectors are compatible with deionized water, ethylene glycol, and propylene glycol. Available with EPDM, FKM, or FMVQ seals, they are engineered for long-term durability in harsh thermal environments.
Applications for Liquid Cooling Systems
These quick disconnect connectors support reliable performance in a variety of high-efficiency cooling environments:
- AI Data Centers – Efficient thermal management in high-density rack infrastructure
- EV Charging Infrastructure – Secure fluid pathways for power electronics and cooling loops
- Energy Storage Systems (ESS) – Safe coolant handling in battery packs and inverters
- High-Performance Computing (HPC) – Leak-free operation for compute-intensive environments
- Military & Aerospace Electronics – Field-proven durability under mission-critical conditions
- Server Manifolds – Simplified installation in modular liquid-cooled server environments
UQD, UQDB & BMQC Technical Specifications Comparison
Specification UQD Series UQDB Series BMQC Series
Size Range UQD02, UQD04, UQD06, UQD08 UQDB02, UQDB04, UQDB06, UQDB08 7 mm
Material Options Stainless steel shell & wetted spring Stainless steel shell & wetted spring Stainless steel shell & wetted spring
Sealing Materials EPDM, FKM, FMVQ EPDM, FKM, FMVQ EPDM, FKM, FMVQ
Temperature Range -40°C to +105°C -40°C to +105°C -5°C to +60°C (wet), -40°C to +70°C (dry)
Connection Type Quick connect with optional latch, Inline or right-angle Blind-mate with 1 mm radial compensation, Inline or right-angle Blind-mate with ±5 mm radial & ±2.7° angular tolerance
Working Pressure 0–0.6 MPa 0–0.6 MPa 0–0.35 MPa
Safe Pressure 1–2 MPa 1–2 MPa 1.0 MPa
Flow Coefficient (Cv) 0.4 to 3.7 (based on size) 0.4 to 3.83 (based on size) 1.32
Fluid Loss per Disconnect ≤ 0.01 ml ≤ 0.01 ml 0.025 ml
Mating Cycle Rating 1000+ cycles 1000+ cycles 1000+ cycles
Coolant Compatibility Deionized water, ethylene glycol, propylene glycol Deionized water, ethylene glycol, propylene glycol Deionized water, ethylene glycol, propylene glycol
Certifications & Compliance OCP UQD Spec Rev 1.0, ISO 9001, IATF 16949 OCP UQDB Spec Rev 1.0, ISO 9001, IATF 16949 OCP BMQC Spec Rev 1.0, ISO 9001, IATF 16949
Why Choose UQD & UQDB for Liquid Cooling Systems?
With rugged construction, multiple configuration options, and full OCP compliance, the UQD & UQDB Series provide peace of mind for OEMs and system designers. Their precision mating mechanisms, fast installation, and long service life make them a trusted choice for thermal management systems across mission-critical sectors.
- Full compliance with OCP specs for UQD, UQDB, and BMQC
- Blind-mate and quick-connect options to match system needs
- Stainless steel construction with corrosion-resistant components
- Low fluid loss and Cv values optimized for cooling efficiency
- Wide range of configurations, sizes, and terminations
Get Started with Amphenol Liquid Cooling Systems
Get Expert Support Amphenol Industrial Operations today or download the spec sheet to learn how UQD, UQDB &BMQC connectors can enhance your liquid cooling system design.
Features & Benefits
Secure Fluid Connections: UQD and UQDB connectors feature aerospace-grade sealing and a bidirectional dry-break valve, delivering leak-free performance and minimizing the risk of coolant loss or accidental spillage.
Blind-Mate and Quick Connect Options: Choose between standard quick plug-in or blind-mate designs with 1 mm radial alignment compensation, facilitating seamless installation even in low-visibility or confined environments.
Durable Stainless Steel Construction: Constructed with corrosion-resistant stainless steel shells and springs, both series are built for long-term reliability in mission-critical liquid cooling systems.
Coolant Compatibility: Compatible with deionized water, ethylene glycol, and propylene glycol, these connectors address the varied thermal management needs of data centers, EVs, and energy storage systems.
Compact and Configurable: Available in four OCP-compliant sizes (02–08), with inline or right-angle styles, barb or threaded terminations, and optional flat-latch mechanisms to accommodate diverse system architectures.
Specifications
Electrical
Not applicable to this product type
These are mechanical fluid couplings
Mechanical
Working Pressure
0–0.6 MPa
Safe Pressure
1–2 MPa
Blind-Mate Tolerance
0-1 mm radial self-alignment
Material
Shell
Stainless Steel
Spring (Wetted)
Corrosion-resistant Stainless Steel
Seal Options
EPDM, FKM, FMVQ (selected based on coolant compatibility)
Termination Options
Hose barb, Male/Female thread (ORB, BSP)
Latch Type
Flat-design button
Environmental
Operating Temperature
40°C to +105°C
Coolant Compatibility
Deionized water, Ethylene glycol, Propylene glycol
Drip-Free Design
Yes (dry-break mechanism)
Compliance
OCP UQD & UQDB Spec Rev 1.0
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