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Rack Manifolds

Rear of a rack column with a vertical manifold bolted to the post and two port rows facing the aisle

Rack manifolds · rear of rack · 0U form factor

Rack manifolds — supply and return distribution

A supply header, a return header and one row of quick disconnect ports, mounted on the rack, sized to the rack standard you already build to.

Request a port map

Ports per manifold

2–48

Rack pitch

EIA 1.75″ / ORv3 1.89″

Branch uniformity

±5%

Ports, header outside diameters and pressure: industry designs · uniformity target: industry practice

A rear rack aisle receding into depth with a manifold on the near post

One pair of headers between the rack loop and the CDU.

The manifold is where a row of server loops meets the building side of the system. Rear-of-rack mounting leaves the U space and the front service face untouched; industry practice puts a 0U manifold in exactly that position.

Rear 0U mounting position · industry practice

Three flow layouts

U / Z / I · industry practice · the red line marks the return path only

U · supply and return on one side

Z · crossing feed

I · straight through

Red line = return path

Which of the three fits is decided by where the CDU feed arrives and which face of the rack stays open for service, not by preference. Port contacts are drawn as open circles; every one of them is a quick disconnect port.

Configuration

Six values · industry designs

Ports 2–48 industry designs

Header OD 1″–2″ 1″ / 1-1/4″ / 1-1/2″ / 2″ · industry designs

Working pressure 580 psi 40 bar, upper end of the range in market designs

Temperature −50…+120 °C industry designs

Material SUS304 / 316L industry designs

Termination NPT / BSP / clamp industry designs

Vertical close-up of a manifold header pipe with an evenly pitched row of ports

Pick the mounting family

Three bay-wide options · one rack standard each

A full-height vertical manifold standing against a rear rack post

Vertical 0URear of rack, 42U 1800–1900 mm through 48U at about 2100 mm.

A horizontal manifold spanning the front beam of a rack frame

HorizontalFront of rack, configurable length, port pitch locked to the rack standard.

An ORv3 rack front showing a port row on 48 mm pitch

ORv348 mm port pitch, blind-mate docking, no hand on the coupling.

What the ports take

Interface types · shipping condition

Macro of two manifold port faces showing the knurled ring and the face seal

FD83 Highest volume the interface the industry builds most manifold ports on · industry-published benchmark

Hand-mate By hand quick disconnects a technician couples at the port

Blind-mate By docking tray plugs that seat as the tray slides home

Shipping Capped every port plugged, supply and return marked

A manifold port can be a plain threaded boss, a hand-mate quick disconnect or a blind-mate socket, and all three can sit on the same header. What has to be fixed at the drawing stage is which port goes where, because the tray side is built against that drawing.

Discussed: FD83 ports · hand-mate ports · blind-mate sockets · shipping caps and supply/return marking

Four blind-mate coupling pairs in bare stainless arranged in ascending order

Installed, by flow layout

Mount states and port rows · three families

A full-height vertical manifold bolted to a rear rack post with hoses fanning out to trays — **Vertical, installed**Bolted to the rear post, hoses fanned to the trays.

A gloved hand reaching a mid port on a vertical manifold — **Service reach**A mid port reached from the rear aisle.

A horizontal manifold above a shelf with six braided hoses gathered to one side — **Hose bundle**Six hoses gathered clear of the shelf.

Macro of the feed end of a horizontal manifold showing its machined end cap and supply hose — **Feed end**Machined end cap where the supply arrives.

A tray connector pair advancing on a manifold port row with guide pins entering the bushings — **Dock alignment**Guide pins entering, plugs not yet seated.

Macro along a port row showing two adjacent ports and the flat datum face between them — **Pitch datum**The face the port spacing is measured from.

A manifold socket row seen square-on with tray plug rows stopping short of it — **Socket row**Square-on: the row the tray plugs line up against.

A rack-side panel with a machined coupling spigot, blue latch levers beside it and a black hose running out of frame — **Rack end**Where the header leaves the rack.

Hydraulic performance

Three values · industry practice

Branch flow uniformity, target

±5%

Accepted on test

±5–10%

Header velocity

≤2 m/s

Sizing starts at about 1.5 L/min per kW of rack heat load; the uniformity target is a design target, and the acceptance band on test is the wider one. Source: industry practice.

Request the hydraulic and port-map sheet

Verification and rack fit

Per-unit leak test · rack adaptation

A leak test station with one manifold clamped in a chamber

Every manifold is leak tested per unit, including each quick disconnect port, under static and dynamic conditions. That test routine is industry practice; it is not a mark or a certificate held by DryLink.

Per-unit leak test incl. every port · static and dynamic · industry practice

Rack adaptation runs against EIA 42U / 48U / 52U and the ORv3 44OU standard, with 42–52 connection points in the standard configuration.

EIA 42U / 48U / 52U · ORv3 44OU · 42–52 connection points · industry-published benchmark

Send the rack elevation and the port map is drawn on it, port by port, against the standard you build the rack to.

Port map request

Which rack standard?

Send the rack elevation, the node count and the rack standard (EIA or ORv3). Sizing starts at about 1.5 L/min per kW of rack heat load.

Request a port map

One business day · English quote + one-page spec sheet · designed to the OCP UQD specification