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Product family

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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FITOK UQD series socket and plug — manufacturer product illustration showing hose-barb and threaded ends; dimensional and pressure data remain configuration-specific.
Representative component · configuration-specific

Component selection

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5 results
Private preview · candidate records

5 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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FITOK UQD08 valved hose-tail socket shown in the original UQD catalogue; series-size photograph, not a complete ordering code.

LCP-000066

Valved UQD08 Hose-Tail Socket — FITOK Series Reference

A visibly marked UQD08 valved socket with a hose-tail termination, shown as a complete standalone product in FITOK's original UQD catalogue. The…

Equivalent flow diameter
10 mm nominal equivalent diameter for UQD08 pair
Published series pressure
16 bar maximum working pressure; 48 bar minimum burst pressure
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Specify with confidence

The details that shape your selection.

Exact interface designation, document revision and mating counterpart Plug/socket configuration, port connection and mounting envelope Coolant, temperature, pressure and flow conditions Required interchangeability checks and acceptance documentation Sample quantity and repeat-order requirement

  • 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

UQD enquiries need an exact interface designation and document revision. A shared family name alone does not establish interchangeability between a plug and socket from different sources.

Configuration and selection

Provide the counterpart, mounting arrangement, termination, coolant and operating envelope. Sample fitting and acceptance should be tied to the nominated interface revision.

Information to prepare

  • Exact interface designation, document revision and mating counterpart
  • Plug/socket configuration, port connection and mounting envelope
  • Coolant, temperature, pressure and flow conditions
  • Required interchangeability checks and acceptance documentation
  • Sample quantity and repeat-order requirement

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.

Guchen UQD coupling examples — separated sockets and plugs with red/blue identification; exact size and order code are not inferred from the photograph.
Guchen UQD coupling examples — separated sockets and plugs with red/blue identification; exact size and order code are not inferred from the photograph.LCIMG-000061 · Local reference image
Guchen UQD socket and plug — separated mating components and end-connection reference; model-specific ratings require the matching datasheet.
Guchen UQD socket and plug — separated mating components and end-connection reference; model-specific ratings require the matching datasheet.LCIMG-000066 · Local reference image
FITOK UQD series socket and plug — manufacturer product illustration showing hose-barb and threaded ends; dimensional and pressure data remain configuration-specific.
FITOK UQD series socket and plug — manufacturer product illustration showing hose-barb and threaded ends; dimensional and pressure data remain configuration-specific.LCIMG-000071 · Local reference image
Guchen UQD coupling pair — upright hose-barb socket and threaded plug; manufacturer-branded reference photograph.
Guchen UQD coupling pair — upright hose-barb socket and threaded plug; manufacturer-branded reference photograph.LCIMG-000073 · Local reference image
Xindaaitech UQD series — manufacturer rendering of a connected hose-barb/threaded pair; exact size requires matching order-code documentation.
Xindaaitech UQD series — manufacturer rendering of a connected hose-barb/threaded pair; exact size requires matching order-code documentation.LCIMG-000077 · Local reference image
Cooling connections shown on Guchen's UQD page — installation context only; the pictured equipment and coupling sizes are not identified as a supplied assembly.
Cooling connections shown on Guchen's UQD page — installation context only; the pictured equipment and coupling sizes are not identified as a supplied assembly.LCIMG-000072 · Local reference image
Danfoss 2UQS25HARD UQD socket — manufacturer rendering; reference configuration, not a CPC model.
Danfoss 2UQS25HARD UQD socket — manufacturer rendering; reference configuration, not a CPC model.LCIMG-000007 · Local reference image
FITOK S4-UQD02-ST7-D-BL valved UQD02 plug, official model-page product photograph; internal reference only.
FITOK S4-UQD02-ST7-D-BL valved UQD02 plug, official model-page product photograph; internal reference only.LCIMG-000373 · Local reference image
CEJN 101536676 UQD06 red plug, individual product photograph from Wonpong part-number row.
CEJN 101536676 UQD06 red plug, individual product photograph from Wonpong part-number row.LCIMG-000696 · Local reference image
FITOK UQD08 valved hose-tail socket shown in the original UQD catalogue; series-size photograph, not a complete ordering code.
FITOK UQD08 valved hose-tail socket shown in the original UQD catalogue; series-size photograph, not a complete ordering code.LCIMG-000095 · Local reference image
CEJN UQD hand-mate coupling range displayed on Wonpong's UQD page; multiple sizes are pictured and must not be represented as one exact order code.
CEJN UQD hand-mate coupling range displayed on Wonpong's UQD page; multiple sizes are pictured and must not be represented as one exact order code.LCIMG-000248 · Local reference image
CEJN 101531026 UQD06 red socket, individual product photograph from Wonpong part-number row.
CEJN 101531026 UQD06 red socket, individual product photograph from Wonpong part-number row.LCIMG-000697 · Local reference image

Open Compute Project — family reference

ParameterDocumented value / configuration
Mating stylehand-mate
Interface designationUQD02; UQD04; UQD06; UQD08
CoolantNon-combustible single-phase water/glycol system
Disconnect stateLeak-tight while coupled and on both sides while decoupled
Port connectionMinimum termination set includes a socket barb and plug straight-thread O-ring boss options.

CPC — Everis UQD02

ParameterDocumented value / configuration
Interface designationUQD02
Port connection1/4 in locking hose barb socket; SAE-4 threaded plug
Hose size1/4 in ID (6.4 mm ID)
FlowCv max: 0.37; Kv approx: 0.32; nominal flow path: 1/8 in
Working pressureVacuum to 120 psi (8.3 bar)Conditions: manufacturer warning: termination, fluid, temperature and environment affect performance
Temperature2 to 75 degrees C (36 to 167 degrees F)
Disconnect stateValved dry-break connection; manufacturer describes disconnect under pressure with no spills.
Leakage behaviorSpillage less than 0.015 cc per disconnect at 0 psiConditions: pressure: 0 psi
Wetted material303 stainless steel housing; high-performance polymer valves; stainless steel wetted spring; EPDM seals
MountingInline
Mating styleHand-mate quick release with latch and audible connection indication

FITOK — UQD02

ParameterDocumented value / configuration
Equivalent flow diameter3 mmConditions: Manufacturer reference only; not a site supply commitment; scope: Equivalent flow diameter, not hose ID, mating-interface diameter or a universal UQD requirement.
Flow coefficient cv socket to plug0.32Conditions: Manufacturer reference only; not a site supply commitment; direction: Socket to plug; scope: Cv coefficient; not a flow-rate rating.
Flow coefficient cv plug to socket0.33Conditions: Manufacturer reference only; not a site supply commitment; direction: Plug to socket; scope: Cv coefficient; not a flow-rate rating.
Mating interface standardFITOK states that its UQD series is designed and manufactured to the OCP UQD specification. The brochure does not identify a revision or establish cross-brand interchangeability for the pictured pair.Conditions: scope: Manufacturer series claim; exact mating revision and fit require the selected pair's drawing
Socket plug end connection examplesUQD02-ST7-B socket and UQD02-ST7-D plug are separately listed with 7/16-20 UNF-2A SAE/MS straight-thread ends; UQD02-MP4-B is a separately listed 1/4 in hose-tail socket option.Conditions: scope: Listed end-connection examples, not a claim that the main photograph depicts any one code or that codes may be freely combined
Standard body and sealFITOK UQD series standard body material 304 stainless steel and standard seal EPDM; 316 and 316L stainless alternatives are available by request.Conditions: scope: Series material statement; selected plug/socket bill of materials and coolant compatibility require code-level confirmation
Series pressure temperature referenceFITOK brochure lists 16 bar maximum working pressure for UQD02 and a -20 to +150 °C working-temperature range for the UQD series.Conditions: scope: Manufacturer reference, not site supply or installed-loop rating; confirm coolant, seal, line ends and chosen order codes

FITOK — UQD04

ParameterDocumented value / configuration
Equivalent flow diameter5 mmConditions: Manufacturer reference only; not a site supply commitment; scope: Equivalent flow diameter, not hose ID, mating-interface diameter or a universal UQD requirement.
Flow coefficient cv socket to plug1.12Conditions: Manufacturer reference only; not a site supply commitment; direction: Socket to plug; scope: Cv coefficient; not a flow-rate rating.
Flow coefficient cv plug to socket1.15Conditions: Manufacturer reference only; not a site supply commitment; direction: Plug to socket; scope: Cv coefficient; not a flow-rate rating.

FITOK — UQD06

ParameterDocumented value / configuration
Equivalent flow diameter7 mmConditions: Manufacturer reference only; not a site supply commitment; scope: Equivalent flow diameter, not hose ID, mating-interface diameter or a universal UQD requirement.
Flow coefficient cv socket to plug2.32Conditions: Manufacturer reference only; not a site supply commitment; direction: Socket to plug; scope: Cv coefficient; not a flow-rate rating.
Flow coefficient cv plug to socket2.37Conditions: Manufacturer reference only; not a site supply commitment; direction: Plug to socket; scope: Cv coefficient; not a flow-rate rating.

FITOK — UQD08

ParameterDocumented value / configuration
Equivalent flow diameter10 mmConditions: Manufacturer reference only; not a site supply commitment; scope: Equivalent flow diameter, not hose ID, mating-interface diameter or a universal UQD requirement.
Flow coefficient cv socket to plug3.65Conditions: Manufacturer reference only; not a site supply commitment; direction: Socket to plug; scope: Cv coefficient; not a flow-rate rating.
Flow coefficient cv plug to socket3.70Conditions: Manufacturer reference only; not a site supply commitment; direction: Plug to socket; scope: Cv coefficient; not a flow-rate rating.

FITOK — UQD02 / UQD04 / UQD06 / UQD08

ParameterDocumented value / configuration
Standard body material304 stainless steel; optional 316 / 316LConditions: Manufacturer reference only; not a site supply commitment; scope: Catalogue values for this manufacturer series; do not combine maximum pressure and temperature into an unverified simultaneous operating point. Fluid, seal and order-code configuration must match.
Standard seal materialEPDMConditions: Manufacturer reference only; not a site supply commitment; scope: Catalogue values for this manufacturer series; do not combine maximum pressure and temperature into an unverified simultaneous operating point. Fluid, seal and order-code configuration must match.
Maximum working pressure16 barConditions: Manufacturer reference only; not a site supply commitment; scope: Catalogue values for this manufacturer series; do not combine maximum pressure and temperature into an unverified simultaneous operating point. Fluid, seal and order-code configuration must match.
Minimum burst pressure48 barConditions: Manufacturer reference only; not a site supply commitment; scope: Catalogue values for this manufacturer series; do not combine maximum pressure and temperature into an unverified simultaneous operating point. Fluid, seal and order-code configuration must match.
Listed working temperature-20 to +150 degCConditions: Manufacturer reference only; not a site supply commitment; scope: Catalogue values for this manufacturer series; do not combine maximum pressure and temperature into an unverified simultaneous operating point. Fluid, seal and order-code configuration must match.

Xinda Technology — UQD04

ParameterDocumented value / configuration
Equivalent diameter5 mmConditions: source scope: manufacturer model row; not a mating-compatibility approval
Flow coefficient cv1.16Conditions: source scope: Cv coefficient, not a flow-rate guarantee
Plug threadG1/4-19Conditions: scope: plug end; socket connection is separate

Xinda Technology — UQD06

ParameterDocumented value / configuration
Equivalent diameter7 mmConditions: source scope: manufacturer model row; not a mating-compatibility approval
Flow coefficient cv2.17Conditions: source scope: Cv coefficient, not a flow-rate guarantee
Plug threadG3/8-19Conditions: scope: plug end; socket connection is separate

Xinda Technology — UQD08

ParameterDocumented value / configuration
Equivalent diameter10 mmConditions: source scope: manufacturer model row; not a mating-compatibility approval
Flow coefficient cv3.85Conditions: source scope: Cv coefficient, not a flow-rate guarantee
Plug threadG1/2-14Conditions: scope: plug end; socket connection is separate

CEJN — CEJN UQD06 red pair 10 153 1026 / 10 153 6676

ParameterDocumented value / configuration
Documented mating part numbersRed socket 10 153 1026; red plug 10 153 6676Conditions: scope: manufacturer order-code examples; pair and interface to be verified
End connectionsSocket 1/2 inch hose connection; plug UNF 3/4-16Conditions: scope: end-connection labels in the two UQD06 red rows; nominal hose designation is not a measured bore
Nominal flow diameter9.5 mmConditions: scope: these two UQD06 rows only; not a flow-rate guarantee
Manufacturer max working pressure10 barConditions: scope: manufacturer catalogue for specified red UQD06 parts; assembly conditions and coolant require review
Listed seal materialEPDMConditions: scope: these two UQD06 part numbers only

FITOK — FITOK S4-UQD02-ST7-D-BL

ParameterDocumented value / configuration
Manufacturer modelS4-UQD02-ST7-D-BLConditions: scope: Exact reference order code; no site stock claim
Termination material304 stainless steelConditions: scope: Maker specifies termination material; confirm full wetted material bill for purchase
Port connectionSAE/MS male straight thread 7/16-20Conditions: scope: Plug tail port, not the mating socket port
Configuration decodingS4 = 304 SS; UQD02 size; ST7 = 7/16 in SAE/MS straight thread; D = valved plug; BL = blueConditions: scope: Decoding of an actual listed model; catalog cautions not to freely combine code elements
Equivalent flow diameter3 mm nominal equivalent diameter for UQD02 pairConditions: scope: UQD02 size designation, not a measured bore of this isolated plug
Published series pressure16 bar maximum working pressure; 48 bar minimum burst pressureConditions: scope: Maker UQD series published values; complete mated connection and coolant must be checked; burst is not working duty
Plug reference dimensionsL = 1.06 in (27.0 mm); L2 = 0.36 in (9.1 mm); wrench flat F = 0.55 in (14.0 mm)Conditions: scope: Catalogue reference dimensions; page 4 states dimensions may change
Standard series sealEPDM O-ring listed as UQD series standard sealConditions: scope: Confirm actual ordered sealing option and coolant chemistry

FITOK — FITOK UQD08-MP10-B socket basis

ParameterDocumented value / configuration
Order basis-UQD08-MP10-B valved socket basis; 5/8 in hose barbConditions: scope: Basic ordering number only; material, color and accepted full order code require manufacturer confirmation
Equivalent flow diameter10 mm nominal equivalent diameter for UQD08 pairConditions: scope: Series size, not a measured diameter of isolated socket
Socket reference dimensionsL = 2.30 in (58.5 mm); L2 = 1.42 in (36.0 mm); outside D = 1.32 in (33.5 mm)Conditions: scope: Catalogue reference dimensions; maker states dimensions may change
Published series pressure16 bar maximum working pressure; 48 bar minimum burst pressureConditions: scope: Mated FITOK UQD series published data; complete hose, tail and coolant can lower duty
Standard series sealEPDM O-ring listed as standard UQD sealConditions: scope: Series standard; verify selected complete socket configuration and coolant
Pair flow coefficientCv 3.65 for socket-to-plug direction; Cv 3.70 for reverse directionConditions: scope: Mated pair with water test conditions; not isolated socket flow capacity or system flow promise

Configuration options and selection inputs

Flow

Selection evidence should include flow rating and Cv.

Reference: Open Compute Project — family reference

Pressure drop

Cv definition is based on water at 60°F and pressure drop in psi.

Reference: Open Compute Project — family reference

Pressure drop

Use the official UQD02 flow curve; Cv is configuration-specific and must not be transferred to other UQD sizes.

Reference: CPC — Everis UQD02

4 conflicting entries remain in the research review queue and are excluded from these specifications.