Universal Quick Disconnects (UQD)
Quick disconnect enquiries referencing a specified UQD interface and revision, with the mating configuration defined for review.
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Quick Disconnect Couplings
Hand-mate and equipment-facing liquid couplings selected around interface, service, and fluid requirements.
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Blind-Mate Quick Disconnects
Rack or equipment connections intended to mate through controlled alignment rather than direct hand access.
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Private preview · candidate records
27 local draft records. Includes unfinished records and Family overviews. Draft · Noindex. Reference configurations are not approved stock. Image public-use review remains separate.
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LCP-000009
Ball-Locking Hand-Mate Quick Coupler
A push-to-connect, ball-locking hand-mate coupling series illustrated by a CYSL04 reference, with documented body material and size range but unconfirmed seal and…
- Effective diameter options
- DN3 to DN8
- Body material
- 316 stainless steel
IMAGE NEEDEDProduct photograph
Component overview
Blind-Mate Quick Disconnect Couplings
A candidate family page for rack or equipment interfaces with controlled alignment.
- Hose size
- DN 03 to DN 12 nominal diameter range
- Working pressure
- 16 bar
LCP-000021
BMQC Blind-Mate Quick Coupling Pair — CEJN Reference
A CEJN BMQC blind-mate socket and plug with documented 5 mm nominal diameter, distinct ends and manufacturer alignment conditions that need rack-level…
- End connections
- Socket UNF 3/4-16 ORB; plug 3/8 inch
- Nominal flow diameter
- 5 mm
LCP-000074
Bulkhead QP8 Flat-Face Stem — FITOK SS-QP8-BFL6-D-E Reference
An exact QP8 stem/plug half with a 3/8 in bulkhead double-ferrule tube connection and EPDM seal. The official standalone image clearly shows…
- Connection role
- QP8 flat-face quick-connect stem/plug half with bulkhead mounting
- Port connection
- 3/8 in bulkhead double-ferrule tube fitting
LCP-000017
Clamp-Retained Quick Disconnect — CGS Series Reference
A CGS direct-insertion coupling pair with an additional clamp-retention concept and size-specific hydraulic catalogue rows, shown in an official series rendering.
- Listed temperature range
- -55 to 120 degC
- Size specific recommended flow
- CGS03 2.1; CGS05 5.88; CGS08 15; CGS10 23.55; CGS12 33.9; CGS15 53; CGS20 94.2…
IMAGE NEEDEDProduct photograph
Component overview
Configurable Liquid Cooling Quick Disconnect Couplings
A candidate family page for requirements-led quick-disconnect configuration.
- Interface designation
- UQD02
- Port connection
- 1/4 in locking hose barb socket; SAE-4 threaded plug
LCP-000014
Externally Retained Blind-Mate Coupling — MQDB Series Reference
A separately pictured MQDB blind-mate construction with no integral lock, documented alignment guidance and model-specific flow and socket-end examples from an official…
- Size specific recommended flow
- MQDB02 2.1; MQDB03 4.6; MQDB04 8.5; MQDB04 MINI 8.5 L/min
- Size specific socket plug end examples
- For MQDB03, the socket table lists G1/4 socket MQDB03-1432-G14 and the plug table lists…
LCP-000008
Fixed Blind-Mate Quick Coupler Configuration
A fixed-style blind-mate coupler series illustrated by a CYSBI08 example, intended for guided equipment mating with external locking and explicit mounting-tolerance review.
- Effective diameter options
- DN3 to DN12
- Body material
- Aluminum alloy
LCP-000073
Flat-Face QP8 Coupler Body — FITOK SS-QP8-NS8-B Reference
An exact QP8 socket/body half with a 1/2 in NPT male threaded tail, FKM seal and 316 stainless termination. Its official 800…
- Connection role
- QP8 flat-face quick-connect body/socket half
- Port connection
- 1/2 in NPT male thread
LCP-000016
Floating Blind-Mate Coupling — CGB Series Reference
A distinct CGB floating blind-mate socket-and-plug reference with external fastening, documented alignment claim and model-separated water-flow rows; not interchangeable by name with…
- Size specific recommended flow
- CGB03 2.1; CGB05 5.9; CGB08 15.1; CGB12 33.9 L/min
- Listed material choices
- Aluminum-alloy and stainless-steel part-code columns
LCP-000007
Floating Blind-Mate Quick Coupler Configuration
A floating blind-mate coupler series illustrated by a CYFBI03 example, with a documented external-retention requirement and manufacturer-stated misalignment accommodation that needs exact…
- Effective diameter options
- DN3 to DN12
- Body material
- Aluminum alloy
LCP-000120
Large-Bore Turn-Lock Dry-Break Coupling — CEJN Smartflow Reference
A large-bore dry-break fluid-transfer connector with handled hose unit and matching tank unit. The manufacturer range photo shows its turn-lock mechanism and…
- Nominal flow diameter options
- Nominal flow-diameter options 25, 50, 65, 80 and 100 mm across the series
- Series max working pressure
- 25 bar maximum working pressure stated for the series; actual complete duty must be…
LCP-000018
LQC G1 Screw-to-Connect Quick Coupling Pair — CEJN Reference
A documented G1 socket-and-plug LQC reference for CDU-side liquid lines, with separate CEJN part numbers and catalogue-scoped bore, seal and pressure data.
- End connections
- G 1 inch socket; G 1 inch plug
- Nominal flow diameter
- 19 mm
LCP-000118
Non-Drip Quick Coupling for Cooling Lines — CEJN Reference
A manually operated non-drip quick-coupling family with matching socket and nipple forms. The original series photo shows several complete connection halves; select…
- Nominal flow diameter options
- Nominal flow-diameter options 4, 6, 9, 14 and 19 mm across the series
- Series max working pressure
- 20 bar maximum working pressure stated for the series; confirm selected material, size, seal…
LCP-000022
Pivoting Blind-Mate Coupling — CEJN PBMC Series Reference
A distinct PBMC pivoting blind-mate coupling with fixed rear connections, self-centering engagement and manufacturer-scoped diameter, pressure and main-material data.
- Nominal flow diameter
- 12 mm
- Manufacturer max working pressure
- 5.2 bar
LCP-000015
Semi-Automatic Ball-Locking Quick Disconnect — CGQ Series
A two-part direct-insertion CGQ reference with a steel-ball locking mechanism and multiple documented model sizes, distinguished from steel-pin MQD and external-retention blind-mate…
- Listed temperature range
- -55 to 120 degC
- Size specific recommended flow
- CGQ03 2.1; CGQ04 3.8; CGQ05 5.9; CGQ06 8.5; CGQ08 15.1; CGQ10 23.5; CGQ12 33.9;…
LCP-000010
Semi-Locking Hand-Mate Quick Coupler
A semi-locking 316 stainless-steel coupling series illustrated by a CYML10 unit; the supplier describes external double O-rings, but seal material and coolant…
- Effective diameter options
- DN3 to DN10
- Body material
- 316 stainless steel
LCP-000011
Snap-On Latch Quick Coupler
A latch-locking push-to-connect coupling series illustrated by a CYCT05 unit, with a visible retention mechanism and supplier-described aluminum body but no inferred…
- Effective diameter options
- DN3 to DN12
- Body material
- Aluminum alloy
LCP-000119
Stainless Threaded or Ferrule-End Quick Coupling — CEJN ultraFLOW SC
A stainless flat-face ultraFLOW SC connector family using threaded or double-ferrule tube ends. The distinct end-connection architecture supports liquid-loop assemblies where the…
- End connection options
- Stainless ultraFLOW SC is described with threaded connection or double-ferrule tube fitting ends
- Nominal flow diameter options
- Nominal flow-diameter options 5, 10 and 12 mm across the series
LCP-000013
Steel-Pin Locking Quick Disconnect — MQD Series Reference
A compact direct-insertion liquid-cooling coupling with a distinct steel-pin lock, shown as an MQD manufacturer reference with separate size rows and end-connection…
- Listed working pressure
- 0 to 100 psi
- Listed temperature range
- -40 to 110 degC
IMAGE NEEDEDProduct photograph
Component overview
Universal Quick Disconnect Couplings (UQD)
A candidate UQD-family page that requires an exact interface revision for every enquiry.
- Interface designation
- UQD02; UQD04; UQD06; UQD08
- Port connection
- Minimum termination set includes a socket barb and plug straight-thread O-ring boss options.
LCP-000001
UQD02-Format Hand-Mate Socket and Plug Configuration
A small-format valved quick-disconnect arrangement for serviceable liquid-loop connections; the pictured series is a visual reference, while interface and flow values belong…
- Equivalent flow diameter
- 3 mm
- Flow coefficient cv socket to plug
- 0.32
LCP-000019
UQD06 Red Hand-Mate Quick Disconnect Pair — CEJN Reference
A size-specific UQD06 socket and plug example using two CEJN red-coded part numbers; their different hose and thread ends are kept explicit…
- End connections
- Socket 1/2 inch hose connection; plug UNF 3/4-16
- Nominal flow diameter
- 9.5 mm
LCP-000006
UQDB04 Blind-Mate Quick-Disconnect Pair
A pictured UQDB04-size blind-mate socket and plug reference for serviceable liquid-cooling connections, with documented model-row interface and hydraulic coefficients rather than an…
- Nominal size
- 1/4 inch
- Equivalent diameter
- 5 mm
Specify with confidence
The details that shape your selection.
Hand-mate or blind-mate installation and service sequence Plug/socket arrangement, port or thread, and hose/tube size Coolant and concentration, wetted materials and temperature Working pressure, flow and allowable pressure drop with stated conditions Disconnection leakage requirement, mounting envelope and quantity
- Function and loop position
- Interfaces, drawing revisions and envelope
- Coolant, materials and seals
- Temperature, pressure and flow conditions
- Testing and documentation
- Quantities and delivery requirements
Overview
Quick disconnect couplings provide a serviceable connection in a liquid loop. Selection starts with the mating pair, connection size and service sequence; fluid, pressure and leakage requirements then define the configuration to review.
Configuration and selection
Compare hand-mate and equipment-facing arrangements separately. Specify both halves, the port or hose termination, material and seal requirements, mounting space and expected disconnect condition.
Information to prepare
- Hand-mate or blind-mate installation and service sequence
- Plug/socket arrangement, port or thread, and hose/tube size
- Coolant and concentration, wetted materials and temperature
- Working pressure, flow and allowable pressure drop with stated conditions
- Disconnection leakage requirement, mounting envelope and quantity
Configuration and quotation
Include the drawing or specification revision and identify any requirements that are still to be confirmed. Available configurations, testing and documentation are confirmed with quotation.
Documented reference configurations & supporting imagery
Local editorial preview
Documented configurations and product references
Manufacturer examples retain their model and conditions. These references describe source products, not approved stock or supply. Images are pending final selection and rights review.
CPC — Everis UQD02
| Parameter | Documented value / configuration |
|---|---|
| Interface designation | UQD02 |
| Port connection | 1/4 in locking hose barb socket; SAE-4 threaded plug |
| Hose size | 1/4 in ID (6.4 mm ID) |
| Flow | Cv max: 0.37; Kv approx: 0.32; nominal flow path: 1/8 in |
| Working pressure | Vacuum to 120 psi (8.3 bar)Conditions: manufacturer warning: termination, fluid, temperature and environment affect performance |
| Temperature | 2 to 75 degrees C (36 to 167 degrees F) |
| Disconnect state | Valved dry-break connection; manufacturer describes disconnect under pressure with no spills. |
| Leakage behavior | Spillage less than 0.015 cc per disconnect at 0 psiConditions: pressure: 0 psi |
| Wetted material | 303 stainless steel housing; high-performance polymer valves; stainless steel wetted spring; EPDM seals |
| Mounting | Inline |
Xinda Technology — CYSL
| Parameter | Documented value / configuration |
|---|---|
| Effective diameter options | DN3 to DN8Conditions: scope: series range; exact part needed |
| Body material | 316 stainless steelConditions: scope: body, not full wetted-material list |
| Locking mechanism | Ball-locking push-to-connect mechanismConditions: scope: manufacturer series description |
| Listed operating temperature | -40 to +125 degCConditions: scope: website series summary; seals, coolant and pressure-temperature pairing not provided |
Xinda Technology — CYML
| Parameter | Documented value / configuration |
|---|---|
| Effective diameter options | DN3 to DN10Conditions: scope: series range; exact part needed |
| Body material | 316 stainless steelConditions: scope: body, not full wetted-material list |
| Seal arrangement | External double O-rings described for shock absorption and cushioningConditions: scope: elastomer grade and fluid compatibility not stated |
| Locking mechanism | Semi-locking hand-mate mechanismConditions: scope: manufacturer series description |
| Listed working pressure | 0 to 20 barConditions: scope: Manufacturer series summary; verify selected halves, fluid and pressure-temperature pairing |
| Listed operating temperature | -40 to +125 degCConditions: scope: Manufacturer series summary; seal elastomer is not specified by this value |
Xinda Technology — CYCT
| Parameter | Documented value / configuration |
|---|---|
| Effective diameter options | DN3 to DN12Conditions: scope: series range; exact part needed |
| Body material | Aluminum alloyConditions: scope: body, not full wetted-material list |
| Locking mechanism | Latch-locking, push-to-lock engagementConditions: scope: manufacturer series description |
| Listed operating temperature | -40 to +125 degCConditions: scope: website series summary; seals, coolant and pressure-temperature pairing not provided |
Envicool — MQD series
| Parameter | Documented value / configuration |
|---|---|
| Engagement mechanism | Steel-pin locking with direct insertionConditions: scope: manufacturer series description, not a cross-brand mating standard |
| Listed working pressure | 0 to 100 psiConditions: scope: series statement; exact order code, fluid and temperature must be verified |
| Listed temperature range | -40 to 110 degCConditions: scope: not a combined pressure-temperature-coolant operating envelope |
| Size specific recommended flow | MQD02 2.1; MQD03 4.6; MQD04 8.5; MQD04 MINI 8.5 L/minConditions: scope: separate model rows, water at 20 degC, plug-to-socket direction, manufacturer 5 m/s velocity criterion; not one family flow range |
| Size specific socket plug end examples | For MQD02, the catalog lists socket MQD02-1432-U716 with UNF 7/16-20 and plug MQD02-7434-P7 with a 7 mm end; these are separate matching-half examples, not a universal MQD portConditions: scope: Order specific; confirm half pairing, mating drawing and tube/hose connection |
| Listed shell and seal options | MQD technical summary lists SUS316L shell and EPDM or FVMQ sealing-ring optionsConditions: scope: Series-listed options; verify actual wetted set and coolant compatibility by order code |
Envicool — CGQ series
| Parameter | Documented value / configuration |
|---|---|
| Engagement mechanism | Steel-ball locking with direct insertionConditions: scope: semi-automatic manufacturer series description |
| Listed temperature range | -55 to 120 degCConditions: scope: series summary; pressure, coolant and seal pairing require exact variant review |
| Size specific recommended flow | CGQ03 2.1; CGQ04 3.8; CGQ05 5.9; CGQ06 8.5; CGQ08 15.1; CGQ10 23.5; CGQ12 33.9; CGQ15 53; CGQ20 94.2; CGQ25 135 L/minConditions: scope: separate model rows, water 20 degC, plug-to-socket, 5 m/s velocity criterion; not one rating |
| Documented connection variants | Threaded socket and plug options are shown separately by CGQ size and part codeConditions: scope: mating half and end geometry must match one controlled order code |
| Size specific socket plug end examples | CGQ03 stainless-code socket CGQ03.1342-G18 and plug CGQ03.7342-G18 are separately tabulated with G1/8 male-thread ends; other size, material and hose-end codes differConditions: scope: Example pair rows only, not proof every CGQ half or depicted image uses G1/8 |
| Listed shell and seal options | CGQ order-code tables separate aluminum-alloy and stainless-steel columns; series summary lists EPDM and FVMQ sealing-ring optionsConditions: scope: Material and seal depend on selected half codes; wetted compatibility not universal |
Envicool — CGS series
| Parameter | Documented value / configuration |
|---|---|
| Engagement mechanism | Clamp-fastened push-to-lock couplingConditions: scope: supplier series structure; not an installed vibration certification |
| Listed temperature range | -55 to 120 degCConditions: scope: series summary; verify pressure and fluid for exact seal variant |
| Size specific recommended flow | CGS03 2.1; CGS05 5.88; CGS08 15; CGS10 23.55; CGS12 33.9; CGS15 53; CGS20 94.2 L/minConditions: scope: separate model rows, water 20 degC, plug-to-socket, 5 m/s velocity criterion; not one family rating |
| Documented ordering structure | Socket and plug codes, end connections and dimensions are tabulated separatelyConditions: scope: exact mating pair and end form to be specified; drawing governs |
| Size specific socket plug end examples | The CGS03 socket table includes a stainless-code G1/8 male-thread example CGS03.1342-G18; the plug table separately lists 4 and 6 mm clamp-fastened hose-end examples, so the two ends must be ordered separatelyConditions: scope: Illustrative series options, not a pre-validated compatible pair or a port claim for the pictured example |
| Listed shell and seal options | CGS order-code tables separate aluminum-alloy and stainless-steel versions; series summary lists EPDM and FVMQ sealing-ring optionsConditions: scope: Selected material and seal follow exact order codes and require coolant review |
CEJN — CEJN LQC G1 pair 10 153 1290 / 10 153 6290
| Parameter | Documented value / configuration |
|---|---|
| Documented mating part numbers | Socket 10 153 1290; plug 10 153 6290Conditions: scope: manufacturer order-code examples; both halves require confirmation |
| End connections | G 1 inch socket; G 1 inch plugConditions: scope: these two listed part numbers only |
| Nominal flow diameter | 19 mmConditions: scope: each listed half, not a measured flow rate |
| Manufacturer max working pressure | 12 barConditions: scope: manufacturer catalogue rating for both listed parts; validate selected coolant, temperature and installed assembly |
| Listed seal material | EPDMConditions: scope: these two listed part numbers only; coolant compatibility not inferred |
| Coupling mechanism | Screw-to-connect locking mechanismConditions: scope: manufacturer series construction; not interchangeability proof for a mixed-brand pair |
FITOK — FITOK SS-QP8-NS8-B
| Parameter | Documented value / configuration |
|---|---|
| Connection role | QP8 flat-face quick-connect body/socket halfConditions: scope: Exact manufacturer product page and photographed half; mating stem is a separate item |
| Port connection | 1/2 in NPT male threadConditions: scope: Exact listed end connection |
| Termination material and seal | 316 stainless steel end material; FKM O-ringConditions: scope: Manufacturer page listing; verify the complete wetted set and coolant for the selected pair |
| Published operating reference | 20 bar (290 psig) and -20 to 200 °C listed on the product pageConditions: scope: Maker-listed half/series reference; actual mating pair, seal and coolant may impose lower limits |
| Published pair cv | Cv 0.9 listed for QP8 seriesConditions: scope: Published QP8 stem-to-body test direction; end fitting can reduce Cv and isolated half is not independently rated |
FITOK — FITOK SS-QP8-BFL6-D-E
| Parameter | Documented value / configuration |
|---|---|
| Connection role | QP8 flat-face quick-connect stem/plug half with bulkhead mountingConditions: scope: Exact manufacturer product page and photographed half; mating body is a separate item |
| Port connection | 3/8 in bulkhead double-ferrule tube fittingConditions: scope: Exact listed end connection |
| Termination material and seal | 316 stainless steel end material; EPDM O-ringConditions: scope: Manufacturer page listing; confirm compatible mating body and actual coolant |
| Published operating reference | 20 bar (290 psig) and -40 to 148 °C listed on the product pageConditions: scope: Maker-listed reference; mated pair and installed tube can have lower limits |
| Published pair cv | Cv 0.9 listed for QP8 seriesConditions: scope: Published QP8 stem-to-body test direction; port geometry may reduce Cv |
CEJN — CEJN Non-Drip coupling series
| Parameter | Documented value / configuration |
|---|---|
| Nominal flow diameter options | Nominal flow-diameter options 4, 6, 9, 14 and 19 mm across the series |
| Series max working pressure | 20 bar maximum working pressure stated for the series; confirm selected material, size, seal and temperature |
| Main material options | Nickel-plated brass and AISI 316 stainless-steel versions are described as separate material choices |
| Mating pair and valve configurations | Matching coupling and nipple halves are offered in double shut-off, single shut-off or straight-through configurations; optional color and key coding distinguish mating linesConditions: scope: Manufacturer series choices; a selected coupling and nipple must use matching codes and confirmed end connections |
| Catalogued socket plug end and seal example | Series 267 order example: coupling 10 267 1220 and nipple 10 267 6220 each list G 1/4 in (BSP) connection and EPDM seal. This example does not identify the photographed pair or cover other Non-Drip sizes.Conditions: Series 267 ordering example; scope: CEJN Series 267 order table example only |
CEJN — CEJN ultraFLOW SC coupling series
| Parameter | Documented value / configuration |
|---|---|
| End connection options | Stainless ultraFLOW SC is described with threaded connection or double-ferrule tube fitting ends |
| Nominal flow diameter options | Nominal flow-diameter options 5, 10 and 12 mm across the series |
| Series max working pressure range | 10 to 20 bar maximum working pressure range across configurations, not one rating for every code |
| Mating pair role | Quick-connect coupling and matching nipple form a separable liquid-cooling line connection; the SC variant includes double-ferrule tube-fitting ends in the manufacturer's described configurationConditions: scope: Series description, not interchangeability with standard ultraFLOW or proof that every order code has ferrule ends |
| Main material options | Current CEJN ultraFLOW SC product page lists stainless steel and AISI 316 stainless steel as main material choices; an exact order code is needed to fix the wetted material grade.Conditions: scope: Current product-page series summary, not an individual photographed part |
| Documented seal and temperature reference | CEJN's 2023 ultraFLOW SC presentation specifies EPDM sealing and -30 to +150 °C for the presented series configuration; verify the selected current order code and coolant before using this range.Conditions: 2023 technical presentation; scope: Dated technical presentation; not a current catalogue guarantee for every SC code |
CEJN — CEJN Smartflow dry-break coupling series
| Parameter | Documented value / configuration |
|---|---|
| Nominal flow diameter options | Nominal flow-diameter options 25, 50, 65, 80 and 100 mm across the series |
| Series max working pressure | 25 bar maximum working pressure stated for the series; actual complete duty must be checked for selected size/material/fluid |
| Main material options | Aluminum and stainless-steel constructions identified as series material options |
| Connection mechanism | Female hose unit twists approximately one-third turn onto male tank unit; integrated poppets open on engagement and close on release |
| Catalogued hose tank end options | The ordering table separates hose and tank units; for the 4 in stainless examples, hose unit 10 640 0003 and tank unit 10 640 5005 list G 4 in female ends, while 10 640 0004 and 10 640 5006 list 4 in NPT female ends. Select the two mating units by exact order code; the range photograph does not identify one of these codes.Conditions: Published ordering examples, not pictured order code; scope: CEJN Smartflow 4 in ordering examples; other sizes and materials have separate codes |
Configuration options and selection inputs
Selection resources
Know what to ask.
Selection guide
How to Prepare a QD or UQD Selection Enquiry
Define interface, service method, fluid conditions, materials, validation, and quantity before comparing coupling options.
Read guideSelection guide
Hand-Mate vs Blind-Mate Liquid Connections
Separate the service architecture from the exact connector interface before preparing an RFQ.
Read guide
Selection guide
Hose and Tube Assembly RFQ Checklist
A practical checklist for routed liquid-cooling assemblies.
Read guide