PBMC Series Liquid Cooling Blindmate Quick Disconnects

Parker BQC Series Quick Disconnect Couplings are high-flow, non-spill connectors designed for data center liquid cooling systems, high-density servers, and advanced computing infrastructure. Aligned with the Open Compute Project (OCP) Pivoting Blind Mate Coupling (PBMC) specification, BQC stainless steel connectors provide a reliable, serviceable connection for modern liquid-cooled server and rack systems.

Designed for blind mate liquid cooling connections, the BQC Series features a pivoting, self-centering interface that accommodates installation and service misalignment. The coupling supports a 6.5 mm working mate distance with up to +5 mm radial and +2.5° angular misalignment. This design helps simplify connection during hot-swap maintenance while keeping the valve fully open throughout the mating process.

Engineered for high-performance server and data center cooling, Parker BQC couplings target 36 LPM flow at less than 4 psi pressure drop and provide up to 2X rated flow compared with similar body-size industry couplings. The compact design helps reduce space requirements within IT trays while supporting efficient coolant flow in high-density computing environments.

A non-spill, flush-face valve design helps minimize fluid loss and protect sensitive electronic equipment during connection and disconnection. Controlled manufacturing and assembly processes also help reduce contamination for dependable performance in demanding liquid cooling applications.

BQC Quick Disconnect Technical Characteristics

• Size: 5/8"
• Material: Stainless Steel
• Port End: Male Thread
• Seal Material: EPDM
• Target Flow: 36 LPM
• Pressure Drop: Less than 4 psi at target flow
• Working Mate Distance: 6.5 mm
• Radial Misalignment: Up to +5 mm
• Angular Misalignment: Up to +2.5°

Data Center Liquid Cooling Applications

• Data Center Liquid Cooling
• High-Density Server Cooling
• High-Performance Computing (HPC)
• AI and Advanced Computing Infrastructure
• Supercomputers
• Servers and Rackable Server Systems
• Information Technology Equipment
• Electronics Cooling

BQC Features & Benefits

• High-flow performance: Provides up to 2X rated flow compared with similar body-size industry couplings.
• Compact design: Helps reduce space requirements within IT trays and high-density server systems.
• Pivoting blind mate connection: Self-centering design accommodates radial and angular misalignment for reliable connections.
• Non-spill flush-face design: Helps minimize coolant loss and protect sensitive electronics during connection and disconnection.
• Serviceability: Designed to simplify blind mate connections and hot-swap maintenance in liquid-cooled server racks.
• Front manifold assembly: Parker's BQC socket design allows front assembly onto the manifold.
• Flexible mounting: BQC plug design supports multiple mounting configurations for greater system design flexibility.
• OCP PBMC aligned: The PBMC specification includes extensive performance and interoperability qualification testing to support consistent results between suppliers.
• OCP development: Parker was an original developer and contributor to the Open Compute Project PBMC design and specification.