About American Wheatley HVAC Products and Fabrication
With more than 40 years of experience, American Wheatley HVAC brand products have established a reputation for providing dependable HVAC products and fabrication. The Plugaroo/TDV™ is an industry-standard.
In addition to our complete line of bladder expansion tanks, strainers, valve products, and parts and supplies, we are committed to bringing you the latest in HVAC technology from all over the world. This commitment is your assurance of receiving the best products the industry has to offer with our HVAC products and fabrication.


Where we are...
Global Flow Products LLC

National Board of Boiler & Pressure Vessel Inspectors Certifications



American Society of Mechanical Engineers (ASME) Certifications
These A.S.M.E. certifications allow our company to effectively meet our customer's stringent quality requirements and authorize us to manufacture and stamp a broad range of pressure vessels and products in accordance with the latest ASME Section VIII Boiler and Pressure Vessel Code. The addition of the new American HVAC state-of-the-art vessel manufacturing facility in Broken Arrow, OK further demonstrates our commitment to supply the Hydronic industry with competitive and essential components required by our industry partners.
Info About Our Sister Companies
InOvate brings residential construction and home service products to market that are advanced in their simplicity and performance. Beginning with the Dryerbox® for a smarter way to connect the dryer exhaust system, mechanical solutions include end-to-end support for dryer appliance exhaust systems including the Defender®, DryerClamp™, Dryer-Ell, DryerFlex®, DryerJack®, DryerWallVent and more products in engineering development.
“Since its founding in 1975, Phoenix Manufacturing, Inc. has been at the leading edge of the evaporative cooler industry. With over 100 years combined experience, the PMI team has learned that the future of manufacturing in America is in the hands of companies who recognize the challenges of today, to achieve the needs of tomorrow.”

“Serenity Sliding Door Systems provides space-saving and attractive interior door systems for healthcare, hospitality, and other commercial applications throughout the U.S. and Canada. Their all-inclusive system is ADA compliant, fully sealed for sight and sound, and carries a STC 35 equivalent rating. With options for lockability, custom finishes, and electronic access - no matter what your project requires, Serenity can craft your custom solution.“

The Williams name is synonymous with the highest quality and most popular line of HVACR products to fit any residential or commercial need, including gas and electric furnaces, fan coils and air handlers. The brand’s roots go back to 1916 when Jesse Williams began manufacturing gas steam radiators in St. Louis, MO as Williams Radiator Company.
They acquired Hydro-Aire/LANCO in 1986, a major manufacturer of fan coils and air handlers. As a result, Williams now offers more fan coil sizes and configurations than any other HVAC company in all of the United States. Over a century later, Williams is still committed to offering high quality, safety-tested HVACR products designed, tested, and manufactured at our state-of-the-art 400,000 square foot complex in Colton, California. Today, our products are sold nationwide through a network of authorized HVACR commercial and residential representatives, wholesalers and retailers. For more information, visit our website at www.williamscomfortprod.com