Technical selection
Specifications and configuration
Reference — MQDB series
| Parameter | Documented value / configuration |
|---|---|
| Retention | No integral lock; externally fastenedConditions: scope: rack or module structure must provide retention |
| Claimed alignment compensation | plus or minus 1 mmConditions: scope: manufacturer series claim; installed datum stack and specific size must be checked |
| Size specific recommended flow | MQDB02 2.1; MQDB03 4.6; MQDB04 8.5; MQDB04 MINI 8.5 L/minConditions: scope: separate model rows, water at 20 degC, plug-to-socket, 5 m/s velocity criterion; not one family flow range |
| Socket end examples | MQDB02 UNF7/16-20; MQDB03 G1/4; MQDB04 G3/8Conditions: scope: example model rows; plug ends differ; exact order code and mating drawing required |
| Size specific socket plug end examples | For MQDB03, the socket table lists G1/4 socket MQDB03-1432-G14 and the plug table lists a 9 mm end MQDB03-7434-P9; the two half ends are different and code-specificConditions: scope: Example order rows only; verify mating, equipment-side guidance and external retention |
| Listed shell and seal options | MQDB technical summary lists SUS316L shell and EPDM or FVMQ sealing-ring optionsConditions: scope: Series options, not confirmation of every wetted material or coolant approval for one pair |
| Series pressure temperature reference | MQDB series summary lists working pressure 0–100 psi and working temperature -40 to +110 °C; the selected seal, pair and coolant require configuration review.Conditions: scope: Manufacturer series summary; not a combined end-code and coolant approval |
Manufacturer series reference. Confirm the exact order code, mating parts and stated conditions for the quoted configuration.
Overview
This blind-mate coupling relies on a guided equipment insertion path and external retention, rather than a hand-operated locking sleeve. It is illustrated by the official MQDB series image, not by an arbitrary UQDB component.
Construction and interfaces
The reference rendering shows a compact male connection with a polygonal mounting region and a projecting mating nose. The source describes no built-in locking mechanism; the surrounding rack or module must supply retention.
Selection
The supplier states a series-level alignment compensation and publishes separate recommended-flow rows for MQDB02, MQDB03, MQDB04 and MINI. Validate the chosen pair's mounted geometry, axial stroke and tolerance stack before using either statement.
Configuration options
The catalogue gives size-specific socket end examples while the plug has its own different termination table. Choose both halves and mounting datum, rather than assuming one thread designation covers the pair.
Application limits
This picture is a series example; no exact order code is identified from appearance. The maker's 0–100 psi and -40 to +110 °C statements apply to the MQDB series summary; the chosen seal, coolant and pair need review together. No performance or interchangeability claim from a different manufacturer's MQDB-like connector is transferred here.
