Custom design and fabrication to ASME Section VIII, Division 1 — from U-stamped pressure vessels to storage tanks over 500,000 pounds and full process towers, all built in-house by certified specialists.
Harris Thermal is an ASME U- and R-stamp certified pressure vessel manufacturer in Newberg, Oregon, fabricating custom vessels and storage tanks over 500,000 pounds since 1885. Our knowledge and expertise allow us to custom design and fabricate vessels that comply with all standards of Section VIII, Division 1, of the ASME code.
Our facility handles fabrications larger than 500,000 pounds, and our tanks can be built to ASME code or non-code, work under atmospheric pressure, and handle a range of non-corrosive and corrosive liquids to suit virtually any storage need.
Each build is engineered for your specific site conditions, mechanical requirements, and process chemistry.
Custom vessels that comply with all standards of ASME Section VIII, Division 1, produced by certified specialists to the most stringent specifications — for process duty across every industry we serve.
Single-walled, double-walled, vertical, and horizontal storage tanks — built to ASME code or non-code, operating under atmospheric pressure, and designed for corrosive or non-corrosive liquids.
Process towers, columns, and contactors for upstream and downstream applications — fractionating towers, distillation columns, and vapor recovery towers, with internals designed for your site conditions.
Our Industry Insights team breaks down the standards so you can spec with confidence — or just send us your conditions and we'll walk you through it.
The U stamp certifies that a vessel was designed, fabricated, inspected, and tested in accordance with ASME Section VIII, Division 1, under a quality program audited by ASME, with an Authorized Inspector signing off. Harris Thermal holds the U stamp for new vessels and the R stamp for repairs and alterations.
In general, vessels operating above 15 psi are subject to ASME Boiler and Pressure Vessel Code requirements in most U.S. jurisdictions. Storage tanks at atmospheric pressure typically fall under API 620/650 instead. Requirements vary by state and application — our quality team can help you determine what your jurisdiction requires.
A pressure vessel is designed to contain fluids above 15 psi and falls under ASME Section VIII; a storage tank operates at or near atmospheric pressure and is typically built to API 620 or API 650. Harris Thermal fabricates both, including single-walled, double-walled, vertical, and horizontal tanks.
Our Newberg, Oregon facility fabricates vessels and tanks over 500,000 pounds, with 200,000 pounds of overhead lifting capacity, 30 ft × 60 ft bay doors, and machining up to 16.5 ft in diameter. We have shipped 20 ft OD stainless steel tanks and regularly handle large-diameter, heavy-wall work.
Yes. We fabricate in duplex, high-nickel alloys, titanium, and zirconium for corrosive service, and provide Lethal Service and Cyclic Service designs per ASME Section VIII, Division 1, including fatigue life and weld integrity analysis.
Yes — worldwide. Our shipping department coordinates each shipment with the appropriate carriers and project stakeholders, planning around equipment dimensions, shipping weight, and site access. Vessels are loaded in our yard with a 75-ton gantry crane, and we have shipped by truck and barge, including nitrogen purging and shrink wrapping for transport or long-term storage.
Send us your service conditions and our engineers will design a pressure vessel, tank, or tower optimized for your application, timeline, and budget.
