…or like this?
Introducing Steelman’s Venturi Diffuser (U.S. Patent No. 5,S57,455)
Our Venturi Diffuser circulates the oven atmosphere to cool the burner gases before they enter the oven and contact your parts. Our competitors are still using fire. The Venturi Diffuser combined with Top/Down Heating (Patent No. 5,351,632) and Rate Control (Patent No. 5,189,963) assure that your parts will not be overheated in a Steelman oven.