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Home / Products / Rack-Level Liquid Cooling Manifold (DN25–DN50, 2–12 Branches)
Rack-Level Liquid Cooling Manifold (DN25–DN50, 2–12 Branches)
Manifold

Rack-Level Liquid Cooling Manifold (DN25–DN50, 2–12 Branches)

Quick AnswerRack-Level Liquid Cooling Manifold (DN25–DN50, ⁦2–12⁩ Branches) — an IDCPDU Manifold for liquid-cooling loops.
  1. 304 stainless, TIG welded and passivated — Weld seams are pickled and passivated after welding, which is where chloride pitting starts in a water loop.
  2. Blind-mate coupling as the tray slides in — The connection closes on insertion, so a node is swapped without reaching behind the rack to seat hoses by hand.
  3. Leak-tested, then watched — Every unit is helium leak-tested before packing and supervised in service — coolant near a GPU tray is not something to discover late.
  4. 4 / 6 / 8 branches, valve per branch — A ball valve on each branch isolates one circuit for service while the rest of the loop stays live.
  5. Self-closing, drip-free couplings — Both sides seal on disconnect, so a cold-plate swap leaves no coolant on the floor and no air in the loop.
  6. Pressure test and material certificate — Each manifold ships with a tightness report and mill certificate, which is what the commissioning file needs.

Tel: +86-574-63783045 · ricky@idcpdu.com

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Product Description

  • Welded 304 or 316L stainless steel body with 2 to 12 branch outlets
  • DN25, DN32, DN40 and DN50 sizes, 200 to 900 mm overall length
  • Flow imbalance held below 10% from outlet to outlet
  • Each manifold is built in two configurations: a single-row header for manual push-in couplings, and a double-row header for blind-mate couplings. In the double-row version the two pipes are welded together and the branch positions are held to ±0.15 mm, with a flatness tolerance of ≤0.5 mm, so couplings align on the first push every time.
  • Every unit is assembled in a clean room and 100% helium leak tested. The stainless body is pickled, passivated, ultrasonically cleaned, rinsed with pure water and dried before it is sealed and packed, and each manifold goes through a full pressure and seal test before shipment.
  • Branches accept push-to-connect couplings that close on disconnect and stay drip-free, an automatic stainless steel air vent removes trapped gas, and colour rings separate supply from return so a circuit cannot be cross-connected during service. Pressure drop across the manifold stays at or below 15 kPa.
  • It sits between the CDU and the cold plates of a liquid-cooled rack: coolant is split evenly to every server tray and the warmed return is collected back to the CDU. Working fluids are ethylene glycol or propylene glycol solution and deionized water, from -20 °C to 110 °C.

Frequently Asked Questions

What does a manifold do in a liquid cooling system?

It sits between the CDU and the cold plates of the rack. Coolant from the CDU is split evenly to every server tray through the branch outlets, and the warmed return from each tray is collected back into the return header and sent to the CDU.

Should I choose a single-row or a double-row manifold?

The single-row header is used with manual push-in couplings, where the operator can reach the joint by hand. The double-row header is used with blind-mate couplings, where the server tray is pushed in and the coupling engages without access. In the double-row version the two pipes are welded together.

How many branches can one manifold have, and in which sizes?

From 2 to 12 branches. DN25 covers ⁦2–6⁩ branches, DN32 covers ⁦2–9,⁩ DN40 covers ⁦4–12⁩ and DN50 covers ⁦6–12.⁩ Overall length runs from 200 to 900 mm depending on branch count and spacing.

How evenly is the coolant distributed between branches?

Flow imbalance between branch outlets is held below 10%, so no single tray is starved of coolant while another is over-supplied.

How is leakage controlled?

Every manifold is assembled in a clean room and 100% helium leak tested. The stainless body is pickled, passivated, ultrasonically cleaned, rinsed with pure water and dried before packing, and each unit passes a full pressure and seal test before shipment.

Can length, branch count and coupling type be customised?

Yes. Length, branch count, branch spacing and coupling type are built to drawing. Branch positions are held to ±0.15 mm with a flatness tolerance of ≤0.5 mm, which is what makes blind-mate assembly repeatable.

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