When specifying a quick disconnect for thermal-management or fluid-transfer modules, three numeric metrics typically determine acceptability: maximum operating pressure (psi/bar), continuous operating temperature (°C/°F), and verified leak rate (µL/min). This datasheet-style overview focuses on those metrics for the UQDP-04HSH01-L000, providing engineers a concise set of checkpoints to verify fit, performance and integration quickly.
Engineers require clear, testable acceptance criteria and readable tables for rapid comparison; this document follows a datasheet format with recommended test-method notes, sample sizes and pass/fail defaults based on common ISO/ASTM practice. The goal is a compact reference for selection and validation in rack-level cooling, edge equipment and laboratory fluid lines.
1 — Product overview & quick specs (background introduction)
Part-number breakdown and intended use
Point: The part-number encodes size, series and options for rapid identification. Evidence: Typical UQD-style identifiers use a numeric size code, series ID and a material/option suffix. Explanation: For UQDP-04HSH01-L000, read the segments as series (UQDP), nominal size (04), body/style code (HSH01) and a revision/option string (L000); intended uses include non-spill liquid cooling, rack modular connections and service disconnect points.
Recommended "at-a-glance" spec table (what to show)
Point: A single-table presentation accelerates compatibility checks. Evidence: Engineers expect dual-unit fields (psi/bar, °F/°C) plus flow and leak figures for evaluation. Explanation: The table below is a recommended format showing nominal bore, body size, valve type, pressure ratings, temperature limits, Cv, typical leak rate and materials to support quick go/no-go decisions.
| Field | Example Value | Units / Notes |
|---|---|---|
| Part number | UQDP-04HSH01-L000 | Reference |
| Nominal bore / ID | 4.0 | mm (0.157 in) |
| Body size | 04 | Series size code |
| Valve type | Flat-face, non-spill | - |
| Max operating pressure | 300 | psi (20.7 bar) |
| Proof / burst | 600 / 900 | psi (41.4 / 62.1 bar) |
| Operating temp | -40 to 125 | °C (-40 to 257 °F) |
| Cv / Flow | 0.18 | Cv (≈1.6 L/min @ 0.1 bar) |
| Typical leak rate (closed) | <5 | µL/min |
| Mating cycles | 5000 | cycles (typical) |
| Materials | Stainless steel / FKM | Body / seals |
| Weight | 22 | g |
| Connection type | Push-to-connect / threaded option | Specify in order code |
| IP / environment | IPX4 typical | Field use rating |
2 — Mechanical & fluid performance (data analysis)
Pressure, temperature & leakage specs (numeric focus)
Point: Define max working pressure, proof/burst pressure, temperature range and leakage criteria expressly. Evidence: Presenting max working pressure as psi/bar with a safety factor and a defined leak acceptance (e.g., <10 µL/min closed) enables repeatable verification. Explanation: Include test-method notes (sample size n≥30 for production lots, helium or water-dye leak method) and graphically present a pressure vs. temperature derating curve to show allowable reductions at elevated temperature.
Flow performance & hydraulics
Point: Cv and representative flow examples translate device geometry into system behavior. Evidence: Provide Cv and a small table of flow at pressure drops (0.1, 0.5, 1.0 bar) for water and 30% glycol. Explanation: For example, Cv 0.18 yields ≈1.6 L/min at 0.1 bar; include a flow curve and pressure-drop table so designers can size tubing (recommend nominal hose/tube sizes and corresponding fittings) and verify pump head requirements.
3 — Materials, seals & compatibility (method / guidance)
Material specifications and corrosion/temperature limits
Point: List base metals, platings and polymer internals with mechanical limits. Evidence: Typical body choices are 316 stainless steel with electropolish or passivation and plated components where weight or cost requires it. Explanation: Provide tensile and creep temperature limits, galvanic corrosion guidance (avoid mixing aluminum with stainless in long-term aqueous loops) and acceptable surface treatments for salt-spray or deionized water environments.
Seal chemistry, fluid compatibility & recommended fluids
Point: Seal selection drives lifetime and chemical compatibility. Evidence: Common choices include EPDM for aqueous coolant, FKM for higher-temperature dielectric fluids and PTFE for aggressive chemistries. Explanation: The compatibility table below maps common fluids to recommended seals and notes cleaning agents and lubrication guidance for assembly to prevent seal damage during mating.
| Fluid | Recommended Seal | Notes |
|---|---|---|
| Water / water-glycol | EPDM | Good low-temp flexibility; avoid hydrocarbons |
| Dielectric coolant | FKM or PTFE | FKM for oils; PTFE for aggressive solvents |
| Deionized water | EPDM / PTFE | Monitor for leaching; use compatible lubricants |
4 — Installation, mating, test & maintenance procedures (method / action)
Mating/unmating procedure and mechanical tolerances
Point: Safe connect/disconnect procedures reduce spills and wear. Evidence: Provide step-by-step actions with alignment limits and recommended hand-force thresholds (e.g., ≤40 N hand mate; tool-assist only for threaded torque). Explanation: Include axial/rotational tolerances, suggested torque values for threaded options, anti-rotation guidance and blind-mate tips: engage slowly, verify valve-seat interface and purge trapped air per procedure.
Inspection, maintenance schedule & failure modes
Point: Scheduled inspection and clear failure-mode criteria extend service life. Evidence: Recommend visual inspection at every service and leak check every 250 cycles or after 6 months in continuous-service environments. Explanation: Common failures include seal extrusion, abrasion and corrosion; provide a troubleshooting checklist linking symptom → probable cause → corrective action (e.g., persistent seepage → seal wear → replace seal and verify mating alignment).
5 — Application examples & system integration (case study / use scenarios)
Typical application: rack-level liquid cooling module
Point: Show practical placement and service benefits in a server rack loop. Evidence: A typical integration places quick disconnects at module inlets/outlets for hot-swap removal and isolate/drain operations. Explanation: Note expected pressure/flow (100–200 psi peak transient avoided; nominal loop 20–60 psi), recommended tubing sizes to maintain flow velocity under 2 m/s and safety interlocks to isolate before service.
Variant selection & ordering guidance
Point: Provide selection rules for port size, seals and terminations. Evidence: Variants commonly include different port sizes, FKM/EPDM options and threaded or push-fit terminations with orderable option codes. Explanation: Choose variants based on system pressure/temperature and fluid chemistry; require lot codes and revision notes for traceability and specify packaging for environmental sensitivity during shipping and storage.
Summary
- Confirm nominal bore and Cv against required flow and pressure drop; validate hydraulic examples to size pumps and tubing accordingly.
- Validate maximum operating pressure and derating vs. temperature; require proof/burst test data and defined leak acceptance for production lots.
- Verify seal chemistry compatibility for the targeted coolant and follow assembly lubrication and cleaning guidance to avoid early seal failure.
- Review mating and maintenance procedures for blind-mate scenarios and anti-spill practices before approving the component for service.
- Ensure traceability (lot codes, revision) and request the one-page printable spec card for installation teams; reference the part: UQDP-04HSH01-L000 when ordering and documenting.
Frequently Asked Questions
What is the expected leak rate for closed valves on this quick disconnect?
Typical acceptance for closed-valve leak rate is <10 µL/min measured by a dye or helium leak method on a statistically significant sample (n≥30). Acceptance criteria should be specified in incoming inspection and verified after environmental conditioning when fluid compatibility is critical.
How many mating cycles can be expected before service replacement is recommended?
Design targets commonly specify 3,000–10,000 mating cycles depending on seal material and duty; a conservative production rating of 5,000 cycles with periodic inspection is a practical baseline. Record service history and replace when visual wear or increased leak rate is detected.
Which tests should be requested to validate pressure and temperature claims?
Request pressure proof and burst tests, temperature soak with pressure cycling, and a pressure vs. temperature derating curve. Specify sample size, ramp rates and acceptance thresholds; include post-test leak checks and dimensional inspection to confirm no permanent deformation.
What seal material is recommended for water-glycol vs dielectric coolants?
EPDM is recommended for water/water-glycol applications as it maintains low-temperature flexibility and avoids degradation. FKM or PTFE should be specified for dielectric coolants and hydrocarbon fluids to prevent swelling or premature seal failure.
