DryLink UQD & UQDB quick disconnects · rack manifolds
Request spec sheet
Macro of a 316L polished seal face with one anodised ring, held to the left with the right of the frame kept clear (generated image)

OCP UQD specification · Rev 1.0 · 2020-09-04

UQD Quick Disconnects —
OCP Universal Quick Disconnect, Rev 1.0

One open interface, four bores, and the numbers the specification fixes for each of them. Revision 1.0 is dated 2020-09-04 and originated at Intel before it was contributed to OCP as an open standard (per OCP UQD specification).

Request spec sheet
Min Cv, water 0.25 → 2.50UQD02 → UQD08 · per OCP UQD specification
Working pressure 100 psi≈ 6.9 bar, maximum · per OCP UQD specification
Bore ladder 1/8" → 1/2"UQD02 → UQD08 · per OCP UQD specification

A fixed interface, several suppliers

The mating interface is fixed by a bore ladder that equivalent industry parts match at 3.2 / 6.4 / 9.5 / 12.7 mm (industry practice). Seals and body materials are set by each supplier, so a cross-brand pair is verified at the sample stage and the test summary is issued for that brand pair.

The bore ladder, end to end

Nominal bore · per OCP UQD specification

The smallest and the largest coupling in the family standing side by side (generated image)
Four bore openings drawn in ascending order along one axis, with leader lines to the overlaid values

Four openings in ascending order; the values below are laid over as mono, never drawn inside the figure.

  • UQD02 coupling pair, 1/8 inch bore (generated image) UQD02 1/8" nominal
    per OCP UQD specification     3.2 mm equivalent
    industry practice
  • UQD04 coupling pair, 1/4 inch bore (generated image) UQD04 1/4" nominal
    per OCP UQD specification     6.4 mm equivalent
    industry practice
  • UQD06 coupling pair, 3/8 inch bore (generated image) UQD06 3/8" nominal
    per OCP UQD specification     9.5 mm equivalent
    industry practice
  • UQD08 coupling pair, 1/2 inch bore (generated image) UQD08 1/2" nominal
    per OCP UQD specification     12.7 mm equivalent
    industry practice
Brushed-metal grain drifting across a cold dark field, low contrast, the quiet ground behind the table (generated image)

Flow has a floor, not just a ceiling

Minimum Cv and recommended flow · water-referenced

One hairline axis with four ticks; the last tick head is marked as the event

Four ticks left to right: UQD02 · UQD04 · UQD06 · UQD08. The marked head is the 2.50 Cv end of the ladder.

  • UQD02 0.25 min Cv
    0.55 GPM recommended     per OCP UQD specification
  • UQD04 0.80 min Cv
    1.7 GPM recommended     per OCP UQD specification
  • UQD06 1.60 min Cv
    3.0 GPM recommended     per OCP UQD specification
  • UQD08 2.50 min Cv
    4.7 GPM recommended     per OCP UQD specification

Cv figures and flow steps are water-referenced values from the specification; a coolant with a different viscosity is sized against the loop, not against this table.

Dry-break, in millilitres

Per connect / disconnect at 0 psi · per OCP UQD specification

Macro cut-away of the dry-break poppet and seal stack inside a coupling body (generated image)
  • UQD02
  • UQD04
  • UQD06
  • UQD08
  • Loss per connect / disconnect
  • 0.020 ml
  • 0.025 ml
  • 0.035 ml
  • 0.070 ml
  • Maximum water content
  • 1.7 ml
  • 3.2 ml
  • 3.8 ml
  • 5.7 ml

Both rows are specification limits: the values are the permitted maximum, not a measured average for a batch.

The family, as it arrives and as it runs

Twelve plates · four to a row · same 3:2 frame throughout

The bores themselves

  • A set of UQD couplings on a neutral dark ground, anodised collars beside bare stainless and a black hose (photograph)
    The setAnodised collars and bare stainless on one ground
  • Four UQD couplings of increasing bore in one row, each joined to a thicker hose (generated image)
    The ladderFour bores ascending in one row
  • One mated coupling pair beside the same pair drawn apart, plug and socket facing each other (generated image)
    The two statesMated, and apart with both faces visible
  • Three couplings of different bores mounted through one stainless backplate, locknuts behind (generated image)
    The backplateThree bores through one panel, locknuts behind

At the panel and in the tray

  • Six sockets in one row through a brushed panel, braided hoses dropping below (generated image)
    Panel bank · UQD06Six sockets in one row
  • A bent stainless bracket carrying two sockets, bolted to a rail with locknuts behind (generated image)
    Bracket · UQD06A bent bracket on the rail
  • A hose pair crossing a tray edge down to two panel-mounted sockets (generated image)
    Tray route · UQD06A hose pair over the tray edge
  • A rack rear with a vertical pipe pair feeding braided hoses to a cold plate (generated image)
    Loop routePipe pair feeding a cold plate

Runs, interfaces and spares

  • A CDU faceplate carrying a port pair, braided hoses dropping toward the floor (generated image)
    CDU interface · UQD08A port pair on the CDU face
  • A coupling pair inline on a rack trunk pipe with the insulated run receding behind it (generated image)
    Trunk run · UQD08Inline on the insulated trunk
  • A quarter-inch plug and socket drawn apart, both hose tails visible (generated image)
    Spare · UQD04Plug and socket, as shipped apart
  • A half-inch plug and socket drawn apart, both bodies reading broad (generated image)
    Spare · UQD08The wide end of the ladder, apart

Pressure envelope

Two specification values and one industry ceiling

Max working 100 psi ≈ 6.9 bar · per OCP UQD specification
Min burst 300 psi ≈ 20.7 bar = 3× working pressure · per OCP UQD specification
Industry ceiling 11 bar 150 psi · third-party industry guide data

Ratings are per-interface, not per-loop System proof and burst are set against the loop drawing

Mixing brands is a test, not an assumption

Mating interface · industry practice

Two half rings brought together, with a radial leader and an angular leader marking the permitted mismatch
  • 01

    The interface is fixed. The pair is defined by a bore ladder that equivalent industry parts match across 3.2–12.7 mm (industry practice).

  • 02

    Seals and materials are not. Each supplier sets its own seal compound and body material, so two parts can share a bore and still differ at the face.

  • 03

    So we test the pair you will run. Cross-brand pairing is verified on samples, and the test summary is issued for that brand pair — not for the bore size in general.

Request cross-brand samples and the test summary

An abstract dark industrial field with one faint horizontal haze band (generated image)

Name the bore.
Take the data sheet.

Tell us the bore or the loop segment. One business day brings an English quote and a one-page spec sheet covering UQD02–08 and UQDB03–06 (designed to OCP UQD/UQDB specification).

Request spec sheet