AI and high-performance computing (HPC) are pushing thermal loads to new extremes. Modern data centers are turning to liquid cooling, thermal energy storage (TES), and advanced hydronic stabilization to maintain uptime, flatten peaks, and protect the grid.
Wessels provides a suite of stainless steel, TES, multi-purpose, full-flow, and smart-monitored vessels designed specifically for mission-critical chilled-water and support systems built in accordance with the ASME boiler and pressure vessel code for reliability in Tier III/IV environments.
Why Wessels for Data Centers
- Stainless steel options for aggressive water treatment and glycol-based cooling systems.
- Thermal energy storage tanks to shift cooling to off-peak hours and buffer IT load swings.
- Multi-purpose hydronic hubs to simplify piping, reduce footprint, and stabilize flows.
- Full-Flow™ and smart tank technologies to improve water quality.
- Many vessels built in accordance with the ASME boiler and pressure vessel code.
Thermal Energy Storage (TES) – Peak Shaving for AI Workloads
TES-Series Thermal Energy Storage Tanks act as a “cooling battery,” letting data centers shift
cooling to off-peak hours, buffer chiller plants, and ride through short-term power disturbances.
- Reduces peak chiller demand during AI and GPU load spikes.
- Dual inner-screen WesPro® baffles help maintain tight thermoclines.
- Scalable capacities for edge facilities up to hyperscale campuses.
- Available with stainless interior options where water quality or redundancy demands it.
Submittal:
TES-Series Thermal Energy Storage Tanks (PDF)
Stainless Steel Air Management
Entrained air and microbubbles can damage pumps, reduce heat-exchanger performance, and create hot spots. Wessels stainless steel air management products are ideal for chilled-water and condenser-water loops in data centers.
SS-AP Stainless Steel Air Purgers
- All-stainless construction for severe service and aggressive water treatment.
- In-line design for commercial and industrial hydronic systems.
- Built in accordance with the ASME boiler and pressure vessel code.
Submittal:
SS-AP Stainless Steel Air Purgers (PDF)
SS-SPA-S Stainless Steel Vortex Air Separators
- Vortex-type air separation for high-flow headers and plant applications.
- Stainless internals suited for data center cooling loops and CDUs.
- Built in accordance with the ASME boiler and pressure vessel code.
Submittal:
SS-SPA-S Stainless Steel Air Separators (PDF)
Stainless Steel Expansion & Hydropneumatic Tanks
Wessels stainless steel expansion and hydropneumatic tanks provide pressure stability and corrosion resistance for mission-critical data center cooling systems built in accordance with the ASME boiler and pressure vessel code.
SS-NA Stainless Steel Compression Tanks
Submittal:
SS-NA Stainless Steel Compression Tanks (PDF)
SS-FXA Stainless Steel Replaceable Bladder Tanks
Submittal:
SS-FXA Stainless Steel Replaceable Bladder Tanks (PDF)
WMT Multi-Purpose Tanks – The Hydronic Hub for Data Centers
WMT-Series Multi-Purpose Tanks combine several hydronic functions into a single, compact vessel, making them ideal as the central node of a data center cooling plant.
- Primary/secondary hydraulic separation for complex chilled-water systems.
- Additional buffer volume to stabilize rapid IT load swings.
- Coalescing media for air and dirt removal to protect coils and heat exchangers.
- Optional WesMag™ magnetic filtration for ferrous debris.
- Built in accordance with the ASME boiler and pressure vessel code.
Submittal:
WMT Multi-Purpose Tanks (PDF)
Full-Flow™ Anti-Stagnation Tanks – Water Quality Protection
Stagnant water can increase microbial risk in domestic, humidification, and mixed-use systems that share space with data center infrastructure. Wessels Full-Flow™ designs keep water moving through the vessel to help reduce stagnation.
- TXA-FF – Full-flow bladder thermal expansion for domestic hot water and process support.
- TTA-Rx-FF – Antimicrobial diaphragm full-flow tank with silver-treated components.
- FXA-FF – Flow-through expansion for well water and booster systems.
- ASME models built in accordance with the ASME boiler and pressure vessel code.
Submittals:
TXA-FF Full-Flow Expansion Tanks (PDF)
TTA-Rx-FF Antimicrobial Full-Flow Tanks (PDF)
FXA-FF Full-Flow Booster Expansion Tanks (PDF)
Smart Tank Technology – Real-Time Reliability
For facilities that can’t afford guesswork, Wessels Smart Tank Series adds monitoring and visual
confirmation to ASME expansion and hydropneumatic tanks.
- WessGuard® electronic bladder integrity monitoring.
- WessView® visual bladder status indicator on select models.
- Available on TXA, FXA, NLA, and other key series.
- Smart models built in accordance with the ASME boiler and pressure vessel code.
Submittal:
TXA-WG Smart Thermal Expansion Tanks (PDF)
Additional Data Center Hydronic Essentials
Wessels can supply a complete hydronic package around TES and stainless tanks to support liquid cooling, CRAH/CRAC
coils, and CDU systems:
- WVA and WVA-HV-WM magnetic air & dirt separators.
- Cartridge and bag filter housings for fine particulate removal.
- WesMag™ magnetic filtration systems.
- Custom stainless steel vessels for CDUs and heat-exchanger skids, built in accordance with ASME code where required.
View Air & Dirt Separator Options
Ready to Upgrade Your Cooling Plant?
Upgrade your data center cooling with stainless steel, TES, multi-purpose, full-flow, and smart-monitored vessels built in accordance with ASME code and engineered for AI-scale reliability.