ASME-certified water buffer tanks engineered by Samuel Pressure Vessel group.
Water buffer tanks add essential thermal mass to closed-loop hydronic systems, helping commercial, industrial and mission-critical facilities manage fluctuating thermal loads. By increasing overall fluid volume, these heavy-duty pressure vessels prevent rapid temperature swings, reduce equipment short-cycling, and extend the operational lifespan of chillers and boilers.
About the Samuel Team
Backed by over four decades of custom pressure vessel engineering, Samuel Pressure Vessel Group's experienced team of ASME-certified welders, design and build water buffer tanks tailored to your specific flow configurations, pressure specifications, and space constraints.
Materials and
Fabrication
Features heavy-wall fabrication up to 6" thick in carbon steel and 3" thick in stainless/alloys.
Sizing and
Production Capacity
Vessel diameters range from 6" up to 192", with total fabrication weight handling up to 80 tons (160,000 lbs).
Precision Machining
and Forming
Equipped with CNC HD plasma cutting (up to 2" thick), lights-out CNC burning, precision CNC machining, and CNC rolling up to 10" in length and 1" thick.
Pressure Ratings
and Code Approvals
Designed for operating conditions ranging from full vacuum up to 10,000 PSI. Special design certifications include ABS, CE/PED, CRN, AS1210, and more.
Integrated
Structures
Custom ladder and platform design and manufacturing integrated directly into vessel assemblies.
A water buffer tank is a heavy-duty pressure vessel integrated into hydronic loops to increase overall fluid volume. Acting as a stabilizing asset within your HVAC or process cooling infrastructure, it buffers sudden demand shifts and protects system components.
How They Work:
System Volume Addition
Adds necessary fluid storage to low-volume hydronic systems, smoothing out sudden thermal load changes.
Reduced Cycling
Prevents chillers and boilers from constantly cycling on and off during low-load conditions, dramatically reducing mechanical wear and energy waste.
High-Pressure Reliability
Engineered for high operating pressures, ASME-certified buffer tanks integrate seamlessly into closed-loop systems without fluid loss or pressure drops.
40
Years of Experience
60,000
Pressure Vessels Produced Annually
400
ASME-Certified Welders
4
Facilities Across North America
Hydronic System Decoupling
Acts as a low-loss header and hydraulic separator between primary production loops (chillers/boilers) and secondary distribution circuits, ensuring independant flow rates without disrupting primary system pressure.
Chilled Water & Process Cooling
Integrates directly into closed-loop chilled water distribution networks to provide thermal storage, smooth out sudden load spikes, and reduce mechanical wear caused by rapid chiller cycling.
Mission-Critical Data Center Infrastructure
Functions as an inline thermal reserve to maintain steady fluid temperatures and continuous cooling flow to critical server racks during short-term power interruptions or generator switchovers.
Industrial Process & Heating Loops
Supplements high-demand manufacturing or biomass heating systems by buffering heavy thermal loads and stabilizing return fluid temperatures before re-entering primary heating equipment.
ASME Section VIII, Division 1 and 2 Certifications
ISO 9001: 2015 Standard Certified
API 650 / API 12F / AWWA D100
ASME B31.3 Process Piping
National Board "U", "U2", "UM", and "NB" stamps quallified