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Six-port DryLink liquid cooling rack manifold with UQD couplings installed inside a GPU server rack
OCP UQD Standard · UQDB / UQ04

Dry-break couplings for zero-drip liquid cooling.

OCP-compliant UQD quick disconnects and rack manifolds, machined in-house and helium-tested one by one — the bottleneck part in every GPU liquid loop, delivered without the drip.

UQD02 / 04 / 06 / 08 5000 mate cycles · OCP floor 100 psi working · 300 psi burst
±0.01mmvalve-seat CNC tolerance
100%helium leak tested
5000×mate cycles · OCP floor
48hquote response
Product Lines

Blind-mate UQDB, hand-push UQ04, and the manifolds that feed them.

One machining cell, one sealing standard, full OCP UQD interface compliance across the loop — the OCP specification defines four sizes from UQD02 to UQD08 with flow classes from 0.55 to 4.7 GPM.

UQDB blind-mate quick disconnect set, macro view of the mating faces
UQDB · Blind-Mate

UQDB Quick Disconnect Set

Blind-mate OCP UQD pair for GPU boards and manifold drops — self-aligning, latch-free, dripless on both ends.

  • Interfaceblind-mate, self-aligning
  • SealEPDM · FKM option
  • End configsORB / hose barbs
UQDB details
UQ04 hand-push quick disconnect set with red and blue seal rings
UQ04 · Hand-Push

UQ04 Quick Disconnect Set

dash-04 OCP UQD pair for cold plates and 1U boards — the 1/4" class with Cv 0.80 minimum and 1.7 GPM rated flow.

  • Flow class1.7 GPM · Cv ≥ 0.80
  • Loss per disconnect≤ 0.025 ml
  • Mate cycles5000 · OCP floor
UQ04 details
Rack manifold with UQD ports installed in a server rack
Manifold · Rack

Rack Manifolds — Configurable Ports

Supply and return manifolds with balanced flow to every tray, UQD/UQDB-ready ports and a per-batch pressure-test report.

  • Port mapconfigurable per rack
  • ΔP target< 2.5% of loop
  • BodySS316 · brass
Manifold details
CDU cabinet with custom manifolds and quick disconnect couplings
Manifold · CDU / Custom

CDU & Custom Manifolds

Manifolds engineered to your CDU loop — port map, flow split and fittings built from your drawings, DFM review first.

  • Modeengineer-to-order
  • Bore rangeDN03 – DN10
  • DocsDFM + test data
Custom manifolds
UQD coupling body machined on a CNC spindle with coolant mist
Manufacturing

One cell from bar stock to tested set.

Precision CNC, sealing components and automated assembly sit on one production line — so the valve, the seal and the thread tolerances are owned by one process, not three suppliers. Valve seats are ground to sealing grade at ±0.01 mm, and every batch carries the same traceable serial range from bar stock to packed carton.

  • Precision machining — 3/4/5-axis cells, sealing-grade valve seats
  • Seal engineering — EPDM/FKM compounds qualified for glycol loops
  • Automated assembly — torque-controlled, batch traceable
Quality

Not a certificate of belief — a test record.

Every coupling and every manifold batch leaves with its numbers: leak, flow, cycle and soak results printed in the report that ships inside the carton.

Engineer holding a UQD coupling over a liquid loop diagram
Why It Matters

The coupling is the part you cannot afford to think about.

Unplanned data center downtime costs about $9,000 per minute, and a single coolant leak incident has been assessed at $190,000 to over $6.3 million in total impact. Water and cooling faults account for roughly 15% of outage events — while liquid-cooled AI servers jumped from 15% of shipments in 2024 to 54% in 2025 and a projected 76% in 2026. Every additional rack is another few hundred mating cycles that have to end dry.

  • $9,000/min — average cost of unplanned downtime
  • $190k–$6.3M+ — assessed total impact of one leak incident
  • 76% (2026) — liquid-cooled share of AI servers, from 15% in 2024
Compliance

Standards the loop can audit.

OCP UQD Interface ISO 9001 QMS RoHS REACH ISO 4406 Cleanliness Helium Leak Tested

Full compliance statement pack and test reports available with every quotation.