DryLink UQD & UQDB quick disconnects · rack manifolds
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Close-up of a mated quarter-inch coupling pair, held to the right with the left of the frame kept clear (generated image)

UQD04 · 1/4 inch · CPU + GPU cold plate loops

UQD04 (1/4") Quick Disconnects
for Cold Plate Loops

The bore the cold-plate loop is built around: one quarter inch, a two-part end, and two numbers that decide whether the part fits the tray and how long it sits on the shelf.

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Equivalent bore 6.4 mmequivalent industry parts measure · industry practice
Operating window 17–65 °Cspecification requirement
Plug thread series ISO 11926-3ORB per OCP UQD specification

One bore carries the tray loop

Cold-plate loops for CPU and GPU trays are the application this bore is sized for (industry guide). The compact body suits 1U and 2U node trays, and the 17–65 °C operating window is a specification requirement rather than a commercial range (per OCP UQD specification).

Two ends: barbed, and threaded

Termination · per OCP UQD specification

A barbed hose end beside a threaded ORB plug end, laid side by side (generated image)
Section sketch: a barbed socket end on the left and an ORB threaded plug end on the right, each with a leader line

Left: barbed hose shank. Right: ORB flange thread. Neither side carries text inside the drawing.

Socket Barbed termination that takes 1/4"–5/8" reinforced EPDM hose (per OCP UQD specification).
Plug ORB flange thread per ISO 11926-3 in the −04, −06, −08 and −10 series (per OCP UQD specification).
Custom Short hose assemblies are quoted to your drawing: length, bend radius and the tray exit all come off the model, not off a catalogue list.

Body and seal, stated as values

Material & seal · industry practice

A set of UQD coupling bodies on a neutral dark ground, bare stainless beside anodised collars (photograph)

  • Body material. Peer UQD04 / UQDB04-class parts use 304 stainless bodies (industry practice). Grade and finish are stated on the drawing rather than in a marketing line.

  • Seal family. The specification's hose side names reinforced EPDM, which matches inhibited-glycol service (per OCP UQD specification).

  • Seal compound, per site. Coolant chemistry differs between sites, so the elastomer is selected against the fluid you actually run. Send the fluid data sheet with the enquiry and the seal is picked from that, not from a default.

Brushed-metal grain drifting across a cold dark field, low contrast, the quiet ground behind the table (generated image)

Shelf life, service life, spares

Specification requirement

One spare coupling sealed in a clean bag with dust plugs fitted (generated image)
Two horizontal scales: a fifteen-year shelf life and a ten-year service life, drawn against one hairline

Upper rule: shelf life. Lower rule: service life. The marked end is the 15-year limit; every value is overlaid as mono, none of it drawn inside the figure.

Shelf life 15 years spec-required shelf life · per OCP UQD specification
Service life 10 years spec-required service life · per OCP UQD specification

Spares are planned against the service interval: a spare that has sat past its shelf life is a spare you replace rather than fit.

Request cross-brand samples and the test summary

Four states to confirm before you order

Scale · seal face · the pair apart · through the tray backplate

The bore, the face, the pair, the plate

  • A quarter-inch mated pair laid beside a satin steel rule, graduations unreadable (generated image)
    ScaleThe pair against a steel rule — does it fit the tray pocket
  • Macro of a threaded ORB end and its elastomer gasket lying side by side on a dark plate (generated image)
    Seal faceORB thread crests and the gasket beside them
  • A quarter-inch plug and socket drawn apart with both hose tails trimmed and visible (generated image)
    ApartWhat the maintenance action looks like
  • A quarter-inch socket through a tray backplate with its hose routed away beneath the panel (generated image)
    At the plateA socket through the tray backplate
  • Four UQD couplings of increasing bore in one row, each joined to a thicker hose (generated image)
    Position in the familyFour bores ascending — this one is second
  • One mated coupling pair beside the same pair drawn apart, plug and socket facing each other (generated image)
    Mated and apartBoth states of one pair, same frame

Family extremes and the dry-break stack

  • The smallest and the largest coupling in the UQD family standing side by side (generated image)
    Family extremesThis bore against the two ends of the ladder
  • Macro cut-away of the dry-break poppet and seal stack inside a coupling body (generated image)
    Dry-break stackThe valve that makes the loss figure possible

In the rack, and where the body starts

  • A rack faceplate with a machined coupling spigot, blue latch levers beside it and a black hose running out of frame (generated image)
    Rack sideA rack face with couplings and hose
  • Two glazed doors of a white machine enclosure on a green epoxy floor (photograph)
    Machine enclosureGlazed doors on the shop floor
An abstract dark industrial field with one faint horizontal haze band (generated image)

Hose size and thread series.
That is all we need.

Send the hose bore and the ORB series (ISO 11926-3). One business day brings an English quote, a one-page spec sheet, and free samples for a cross-brand pairing check.

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