1.5 Gallon Vacuum Chamber Digital Heating Jacket1. 5 Gallon Tall Stainless Steel Vacuum Chamber Digital Heating Jacket Our high capacity vacuum chamber heating jacket provides the user with the ability to evenly heat the chamber around the circumference while being very stable. When combined with a heating pad, this chamber covers most of the vessels distributing degassed heat in the vessel. This vacuum chamber digital heating jacket allows for accurate and stable control and is reprogrammable.