Hoffman Specialty Co. Heating System Information (1926)

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This document is from the sales department at the Hoffman Specialty Co. in 1926. It showcases Hoffman Valves and Controlled Heat Equipment with cutaway diagrams of how the Hoffman No. 2 Vacuum Valve operates. There is also information on how to "vacuum-ize" a one-pipe steam system, the No. 7 Hoffman Adjustable Modulating Valve, Nos. 8 and 9 Hoffman Return Line Valves, the Hoffman Blast Trap, the Hoffman Ther-Kompo Gage, and the Hoffman Differential Loop. And there are diagrams outlining the typical installations of Hoffman "Controlled Heat" Equipment.