DryLink couplings are not brokered between workshops — machining, testing and packing share one floor. Valve seats are ground to ±0.01 mm metres from the helium benches that prove them, and a standard batch walks out the door in 15 days with its report inside the carton.
Every order — one box or one thousand — passes the same three stations. No express lane past the leak bench, no sampled release for small batches.
3-, 4- and 5-axis centres turn 316L and brass bar into valve bodies and manifold cores. Valve seats are ground to the ±0.01 mm sealing tolerance in the same cell that will later watch them pass the benches — the machinist and the leak number answer to the same supervisor.
CMM first articles open the batch, then the leak benches take over: 100% of sets pass vacuum decay under 1×10⁻⁴ mbar·L/s, with helium mass-spectrometry verification at 5×10⁻¹² mbar·l/s detector class on leak-critical batches. Failures are quarantined by serial, never reworked in.
Release cleanliness is confirmed at ISO 4406 18/16/13 before bagging in the controlled area. Each set is foam-packed at 10×10×5 cm and about 0.2 kg, and the compiled batch report is the last thing into the carton before the tape.
316L, brass and aluminium on the same line, with valve seats ground to ±0.01 mm and 1U-pitch envelope parts held to the 44.45 mm class. Threads are cut and gauged to ORB per ISO 11926-3 before a part ever sees assembly.
Mass-spectrometry benches with 5×10⁻¹² mbar·l/s detector-class sensitivity stand behind a production acceptance order of about 1.4×10⁻⁶ atm·cc/s — while the inline vacuum-decay gate runs under 1×10⁻⁴ mbar·L/s on 100% of sets.
Particle counts target the 18/16/13 code — 1300–2500 particles ≥4 µm, 320–640 ≥6 µm and 40–80 ≥14 µm per millilitre. Components are flushed, counted and bagged in a controlled area so the count survives to your loop.
Seal kits are kitted by compound lot, retainers are fastened under calibrated torque, and red-hot / blue-cold coding is verified per the OCP colour convention. Every set carries a serial range back to bar-stock heat and seal lot.
Lead times are commitments against the same line you toured above — the 48-hour quote, the 15-day standard window and the 30–45-day custom build all run through those three stops.
| Item | Commitment | Notes |
|---|---|---|
| Quotation | 48 hours | drawings or photos are enough to start |
| DFM review | 48 hours | port map, Cv class, envelope and seal checks before tooling |
| Standard couplings | 15-day dispatch | UQDB / UQ04 sets from MOQ 50 pieces |
| Custom manifolds | 30–45 days | after drawing freeze and DFM sign-off |
| Sample batches | 15-day window | same line, same report as production |
| MOQ | 50 pieces | custom parts quoted separately |
| Unit packing | 10×10×5 cm · ~0.2 kg | foam-protected, serial-labelled per set |
| Export packing | carton + foam / tray | precision surfaces bagged in the controlled area |
| Trade terms | FOB / CIF / DDP | CIF insured at 110% under ICC(C) clause |
| Shipping origin | Shenzhen, China | your forwarder of choice on FOB terms |
| Shipping documents | invoice · packing list · CoC | batch report packed inside the carton |
| Re-orders | 15-day window | repeat batches keep the serial-traced process |
Factory visits and video walk-throughs are arranged with your quotation; standard sets dispatch in 15 days.