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Datacenter Liquid Cooling — Pumps, Valves, Fittings & Tubing | Triplex Sales
Industries · Datacenter Liquid Cooling

Built for the liquid-cooled datacenter.

AI and HPC workloads have pushed rack densities past what air can remove. Liquid cooling — direct-to-chip, rear-door, and immersion — is now the architecture of record. That means miles of stainless tubing, thousands of isolation valves, high-reliability pumps, and fittings rated for continuous 24/7 service at every CDU, manifold, and row.

Triplex Sales supplies the full wet-side bill of materials: pumps, valves, fittings, stainless tubing, gaskets, and hangers — stocked across the alloys and finishes datacenter operators actually specify, from carbon-steel facility headers to 316L polished TCS loops and 6Mo super-austenitic for high-chloride makeup water.

Loop Coverage FWS · TCS · D2C
Line Sizes 1/4" - 12"
Materials 304 · 316L · 6Mo
01 — Loop Architecture

Three loops. One supplier.

A modern liquid-cooled datacenter is organized around three thermal circuits separated by plate-and-frame heat exchangers inside the CDU. Each loop has its own fluid chemistry, cleanliness requirement, and component spec. We supply parts into all three.

Loop 1

Facility Water System

FWS · Primary · Cooling Tower → CDU

The big-bore side. Treated water — often with glycol and corrosion inhibitor — loops from the cooling tower or chiller plant to the facility-side of every CDU. Runs 6"-12" mains, carbon steel or 304 stainless, with butterfly isolation at every branch and tap.

Because fluid chemistry is controlled by plant chemistry, not by IT, this loop tolerates harder materials and less-polished surfaces. But reliability is non-negotiable: any FWS failure cascades into a thermal event.

What we ship Centrifugal pumps · Butterfly valves · Check valves · Y-strainers · 304 weld fittings · Carbon-steel hangers · EPDM gaskets
Loop 2

Technology Cooling System

TCS · Secondary · CDU → Rack / Row

Between the CDU and the row manifold. Typically a 25% propylene-glycol / water mix or treated DI water, held at precise temperature and flow. Cleanliness matters here — any debris makes it to the cold plate.

Lines are usually 2"-6" 304/316L stainless, either welded or Tri-Clamp, with isolation ball valves at every rack drop and pressure/flow instrumentation throughout. Polished ID tubing (20/32 Ra) is standard on new hyperscale builds.

What we ship Sanitary centrifugal pumps · Ball & diaphragm valves · 316L weld fittings · A270 polished tubing · EPDM / FKM gaskets · Stainless hangers
Loop 3

Direct-to-Chip & Immersion

D2C · Rack / Tank Side

Inside the rack. Cold-plate and immersion systems run on high-purity water, propylene glycol, or engineered dielectric fluids (single- or two-phase). Flow paths are smaller — 1/4" to 1" — and tolerance for particulate is measured in microns.

Tri-Clamp, quick-disconnect, and compression-fit manifolds predominate. Gasket choice is driven by fluid compatibility: EPDM for water/glycol, FKM for fluorinated dielectrics, PTFE for broad chemical service.

What we ship Sanitary centrifugal pumps · Rotary lobe pumps · Compact ball valves · Sanitary clamp fittings · BPE-finish tubing · FKM / PTFE gaskets · Compact hangers
02 — Product Program

Every wet-side component, on one PO.

Datacenter mechanical contractors don't want six suppliers — they want one. Here's the full product program we ship into cooling projects, along with the brand partners behind each category.

Category 01

Pumps

Centrifugal · Sanitary · Rotary Lobe

Pump selection tracks the loop. Facility water runs large centrifugal pumps; TCS loops favor sanitary centrifugals for cleanliness; rotary lobe pumps handle metered inhibitor and dosing service. All selected for continuous 24/7 duty with N+1 redundancy options.

  • ANSI & end-suction centrifugal — FWS mains
  • Sanitary centrifugal — secondary TCS & D2C
  • Rotary lobe — metered dosing & inhibitor injection
  • Redundant / N+1 pump skids available
  • Full mechanical-seal and flush-plan options
Stocked lines
Multiple OEM partners · see pump overview
Category 02

Valves

Butterfly · Ball · Diaphragm · Check

Isolation, modulation, and backflow protection at every node. Large butterfly valves for FWS mains. Full-port ball valves for TCS drops and equipment isolation. Diaphragm valves where cleanability and precise control matter — D2C manifolds, dosing loops, biopharm-style cleanroom builds.

  • Butterfly — 2" to 24", lug & wafer
  • Ball — full & reduced port, 2-way & 3-way
  • Sanitary diaphragm — manual & pneumatic actuated
  • Check — swing, silent, sanitary, spring-assisted
  • Globe & control — flow modulation
Stocked lines
Multiple OEM partners · see valve overview
Category 03

Fittings

Clamp · Weld · Threaded

Full stainless fitting program. Butt-weld 304/316L for fixed facility and TCS runs. Tri-Clamp sanitary for serviceable TCS, D2C, and cleanroom lines. Euro standards (DIN, SMS) available for imported CDU equipment. Elbows, tees, reducers, caps, adapters — every connection transition.

  • Clamps · ferrules · elbows · tees · reducers
  • Caps · adapters · spools · laterals
  • 304 / 316L / 6Mo alloys
  • Mill-finish through BPE electropolished
  • Full EN 10204-3.1 MTR traceability
Brand partners
Dixon · Wayland · VNE · MaxPure · MaxCore
Category 04

Tubing

A270 Polished · A249 · A554

Stainless tubing in the sizes and finishes datacenter TCS loops demand. ASTM A270 S2 polished ID/OD for new hyperscale builds. A249 unpolished for facility runs. Hydrogen-bright annealed, Eddy Current tested, every length stamped with heat number and spec for full MTR rollup.

  • A270 S2 polished — 20/30 Ra max
  • A249 / A269 unpolished — facility lines
  • 304L · 316L · specialty alloys
  • 1/2" to 8" OD · .019 to .145 wall
  • 20' random lengths · mill-stamped traceability
Brand partners
RathGibson · United Industries · Dixon · Wayland
Category 05

Gaskets & Seals

EPDM · FKM · PTFE · Buna

Gasket material is driven by the fluid. EPDM handles water, glycol, and most inhibitor packages — the default for FWS and TCS. FKM (Viton®) and perfluoro elastomers cover fluorinated dielectric fluids used in immersion. PTFE / encapsulated gaskets where chemical service is mixed or unknown.

  • EPDM — water, glycol, treated facility water
  • FKM (Viton®) — fluorinated dielectric fluids
  • PTFE / Tef-Steel® — broad chemical service
  • Silicone · Buna-N · perfluoro available
  • All clamp, bevel-seat, and Euro sizes stocked
Brand partners
Dixon · Wayland · VNE
Category 06

Hangers, Supports & Ancillary

Hex · Block · Strainers · Unions

The pieces that hold a run together. Stainless hex and block hangers for polished tubing. Wall flanges and pipe supports for facility-side headers. Y-strainers, basket strainers, and flow-conditioning unions at pump suction and CDU inlets. Everything sized to match the tubing and fittings in your BOM.

  • Hex & block hangers — tube & pipe sizes
  • Wall flanges · floor supports · riser clamps
  • Y-strainers · basket strainers at pump suction
  • Unions · expansion joints · flex connectors
  • Full selection matched to line spec
Brand partners
Dixon · Wayland · VNE
03 — Cooling Technologies

Every architecture the market is building around.

The cooling-technology stack is in active flux. Air still handles the majority of installed capacity, but every new AI and HPC buildout is liquid-first. Here's how each approach maps to our component program.

Technology
How it works
Typical fluid
Components we ship
Air · CRAC / CRAHLegacy · ≤15 kW/rack
Perimeter or row-based computer-room air conditioning units with chilled-water or DX coils. Still dominates installed capacity below 15 kW/rack. Facility-water side of every CRAH is a liquid system.
Chilled water (FWS side)
PumpsButterflyStrainersWeld fittings
Rear-Door Heat ExchangersRDHx · 20-75 kW/rack
Liquid-cooled coil mounted on the back of a standard rack. Fans pull hot exhaust air through the coil, rejecting heat to chilled water. Retrofit-friendly — no raised floor or containment changes required.
Chilled water (FWS)
PumpsBall valvesFlex connectors316L fittings
Direct-to-Chip (Cold Plate)D2C · 50-150 kW/rack
Cold plates bonded to CPUs, GPUs, and memory with coolant circulated through microchannels. Now the default architecture for NVIDIA H100/H200/GB200 clusters and equivalent AMD/Intel platforms.
PG-25 water or DI water
Sanitary pumpsBall valvesTri-ClampA270 tubingEPDM gaskets
Single-Phase Immersion1PIC · 50-200 kW/rack
Servers submerged in a dielectric fluid bath. Heat removed by pumping warm fluid through an external heat exchanger. No phase change; lowest-complexity immersion approach.
Mineral oil, synthetic, Novec-series
Ball valves316L fittingsFKM gasketsSpecialty tubing
Two-Phase Immersion2PIC · 100-250 kW/rack
Engineered fluid boils at chip surface; vapor rises to a water-cooled condenser and returns as liquid. Highest heat-flux architecture; tighter tolerances on vapor-path sealing.
Engineered fluorocarbon
Condenser pumpsDiaphragm valvesBPE fittingsPTFE / FFKM gaskets
Hybrid Liquid-to-AirL2A · variable density
Self-contained liquid-cooled rack that rejects heat to room air through an integrated heat exchanger. No facility water required — useful for colo or edge deployments where liquid infrastructure isn't in place.
Internal PG / water
Compact pumpsBall valvesTri-ClampCompact tubing runs
Evaporative / AdiabaticPlant-side cooling
Outdoor cooling towers or adiabatic coolers that reject facility heat to atmosphere. The upstream thermal sink for nearly every liquid architecture below it. Chloride content of makeup water drives alloy choice.
Treated tower water
Centrifugal pumpsButterflyStrainers304 / 6Mo fittings
04 — Materials & Fluids

Spec the alloy and the elastomer for the fluid.

Datacenter cooling systems run 24/7 for 15+ years. Small misalignment between fluid chemistry and material choice shows up as pitting, stress-corrosion cracking, or elastomer swell three to five years in — usually under load, always expensive. Here's how we spec it.

Alloys in the loop

  • Carbon Steel FWS mains only. Low cost for large-diameter facility-water headers where chemistry is controlled. Requires inhibitor package and annual testing.
  • T304 / 304L General-purpose stainless. FWS mains, cooling-tower risers, makeup-water piping where chlorides are below ~200 ppm.
  • T316L Default for TCS and D2C. Added Mo resists chlorides and inhibitor breakdown products. Specified on nearly every hyperscale TCS loop.
  • 316L low-S (BPE) Cleanroom DC builds. Controlled sulfur for repeatable orbital welding. Used on D2C loops where surface cleanliness is part of the service spec.
  • 6Mo (UNS N08367) High-chloride makeup water. Coastal sites, reclaimed water, and once-through seawater cooling. PREN ~46 vs. 316L's 27.
  • Copper / Brass Cold-plate side only. Inside the server; not in the facility or TCS piping. Fluid chemistry must protect copper — no ammonia, controlled pH.

Fluids & compatible elastomers

  • Treated Water FWS default. City or well water with corrosion inhibitor, biocide, pH adjuster. Gaskets: EPDM.
  • PG-25 / PG-30 TCS standard. 25-30% propylene glycol / water mix for freeze protection and corrosion control. Gaskets: EPDM.
  • Deionized Water Advanced D2C. High-purity water with controlled conductivity. Aggressive to many metals — 316L minimum. Gaskets: EPDM or PTFE.
  • Mineral / Synthetic Oil 1P immersion. Hydrocarbon or engineered synthetic dielectric. Gaskets: FKM (Viton®), NOT EPDM (swells).
  • Fluorinated Dielectric 2P immersion. Engineered fluorocarbon (Novec-series, etc.). Gaskets: PTFE or FFKM; specialty elastomers required.
  • Glycol Blends · Custom OEM-specified. Some CDU vendors ship a proprietary fluid. Always confirm elastomer compatibility against the vendor's data sheet before ordering gaskets.
05 — By the Numbers

A single-supplier program built for 24/7 mission-critical.

Datacenter cooling doesn't tolerate stock-outs or substitutions. Here's what our wet-side program looks like in numbers — across the product categories, alloys, and certifications that matter on a mission-critical build.

Product Categories
6
Pumps, valves, fittings, tubing, gaskets, and hangers — the complete wet-side BOM on one PO.
Line Sizes
1/4-24"
From 1/4" D2C manifold taps to 24" FWS mains. Reducing combinations and adapters across the range.
Alloys Stocked
6+
Carbon steel, 304/304L, 316L, 316L low-S, 6Mo super-austenitic, and nickel-base for the most aggressive services.
Traceability
3.1 MTR
EN 10204-3.1 MTRs on every heat. ISO 9001 suppliers. 3-A and ASME-BPE on cleanroom and D2C orders.
06 — Segments Served

Where our components end up.

Hyperscale, colocation, enterprise, and edge — every segment is running some form of liquid cooling now. Here's what each one typically asks us for.

Hyperscale AI / HPC

NVIDIA GB200 & H200 GPU clusters, mass D2C deployment, CDU skids, hundreds of thousands of feet of 316L tubing per campus.

Colocation

Multi-tenant halls retrofitting with RDHx and hybrid L2A racks. Mixed-vendor component compatibility is the operating reality.

Enterprise & Financial

Private halls for trading, core banking, and regulated workloads. High-availability redundancy — N+1 pump skids, valved-out failover.

HPC & Research

Academic and national-lab clusters. Weather-modeling, genomics, drug discovery. Heavy liquid-cooling and immersion pilots.

Edge & Micro-DC

Compact, self-contained liquid-cooled deployments for 5G, industrial, and telecom. Skidded and prefabricated — ships as a unit.

Cloud Service Providers

Public cloud and SaaS operators. Standardized rack SKUs, repeatable BOMs, inventory held by region for rapid buildout.

Immersion Specialists

Single- and two-phase immersion integrators. Dielectric-compatible gaskets and seals, specialty tubing, and isolation valves.

Evaporative / Water Systems

Cooling-tower rebuilds, makeup-water treatment, and condenser-water loops. 6Mo super-austenitic for high-chloride service.

07 — Resource Library

Catalogs, spec sheets, and quick-reference guides.

Brand catalogs and sizing references most useful on a datacenter cooling build. PDFs open in a new tab. Anything you don't see — ask and we'll pull the drawing, MTR, or spec from the mill or OEM.

Dixon Sanitary
Wayland Industries
VNE — NEUMO Ehrenberg Group (MaxPure & MaxCore)
RathGibson
United Industries
HUB

Pump Overview

Full Triplex Sales pump program — centrifugal, sanitary centrifugal, and rotary lobe lines.

Pumps · Overview page →
HUB

Valve Overview

Butterfly, ball, diaphragm, check, and control valves across size and alloy.

Valves · Overview page →
HUB

Sanitary Fittings & Tubing

Dixon, Wayland, VNE, MaxPure, MaxCore, RathGibson, United — full fitting and tubing program.

Fittings · Overview page →
PDF

Dixon Hygienic Fittings Catalog

Clamps, weld, BPE, vacuum, spray balls — the broadest sanitary fitting catalog.

Dixon · 2024 · Full catalog →
PDF

Wayland Industries Catalog

3-DC, same-day stainless fitting and clamp program with full 3.1 traceability.

Wayland · 2025 · Full catalog →
PDF

VNE Fittings Catalog

Clamp, weld, bevel seat, John Perry, E-Line, DIN — U.S.-manufactured in Janesville, WI.

VNE · Full catalog →
PDF

MaxPure ASME-BPE Catalog

Low-sulfur 316L, MP/EP finishes, orbital-weld ready — for cleanroom datacenter builds.

MaxPure · BPE catalog →
PDF

MaxCore Super-Alloy Fittings

6Mo, 904L, and Alloy 22 for high-chloride facility water and aggressive cooling-tower service.

MaxCore · Alloy catalog →
PDF

RathGibson A270 Sanitary Tubing

Micro-Weld™ 304L / 316L polished tubing, 20/30 Ra — hyperscale TCS loops.

RathGibson · Tubing spec →
PDF

United Industries Tubing

A270, A249, super-alloy tubing — .019 to .145 wall, facility through TCS service.

United · Tubing spec →
BOM

Submit a Cooling BOM

Send a wet-side bill of materials and we'll come back with a line-item quote, lead times, and alloy/finish callouts.

Quote request →
ASK

Talk through an architecture

Planning an AI hall, retrofit, or immersion pilot? Our sales engineers walk BOMs with mechanical contractors every week.

Engineer consult →
08 — Frequently Asked

Answers for engineers, PMs, and mechanical contractors.

The questions that come up most on datacenter cooling projects. Anything not here — ask us and we'll route it to the specialist who owns the category.

What cooling loops does Triplex Sales supply components for?

All three — the Facility Water System (FWS), Technology Cooling System (TCS), and rack-side direct-to-chip or immersion loops. Each loop has its own alloy, surface finish, and gasket requirements, and we stock across the full spectrum from carbon steel FWS mains through 316L electropolished TCS tubing.

What line-size range do you stock?

1/4" to 24" depending on the component. 1/4" to 12" covers the sanitary fitting and tubing lineup; butterfly valves and large-bore pipe run to 24" for FWS mains and cooling-tower risers. Full reducing-combination coverage across the range.

Do you supply complete wet-side BOMs for CDU or cooling skid projects?

Yes. Send a bill of materials and we come back with a line-item quote covering pumps, valves, fittings, tubing, gaskets, and hangers — with lead times and any alloy or finish callouts worth reviewing before ordering.

What traceability documentation is available on datacenter orders?

EN 10204-3.1 Mill Test Reports on every stainless heat. ISO 9001 quality systems on all fitting, pump, and valve lines. ASME-BPE documentation on biopharm-spec components. FDA-compliant gasket certs where required.

Do you stock alloys beyond 304 and 316L for high-chloride datacenter service?

Yes. 6Mo (UNS N08367, PREN ~46) for high-chloride cooling-tower and seawater service, 904L for super-austenitic pitting resistance, and Alloy 22 (Hastelloy C22® equivalent) for the most aggressive chemistries — coastal sites, reclaimed makeup water, or aggressive CIP loops.

How does your datacenter cooling program differ from your hygienic and food-and-beverage program?

Much of the stainless fitting and tubing lineup overlaps — sanitary cleanliness matters on TCS and D2C loops just like it does in food, dairy, and biopharm. Differences appear on the facility-water side (carbon-steel mains, large-bore butterfly valves, inhibitor chemistry) and in elastomer selection — FKM and PTFE are required for dielectric-fluid immersion service, not EPDM.

Next Step

Send the BOM. We'll ship the cooling loop.

Pumps, valves, fittings, tubing, gaskets, hangers — across carbon steel, 304, 316L, and 6Mo. Whether it's a hyperscale AI hall, a colo retrofit, or an immersion pilot, we can quote the full wet-side BOM from one supplier and back it with 3.1 MTRs on every heat.

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