Reliable vacuum and vacu-vapor heating equipment (1915)
The Bishop-Babcock-Becker Co. · The Bishop-Babcock-Becker Co. · leaf 71
% inch size therefore be heated independently and the desiredtemperature maintained in each room, regardlessof the weather conditions. A graduated dialcorrectly indicates the amount of vapor and steamadmitted. It will be noticed that only a one-quarter turnof the lever-handle fully opens or closes… … Top view % inch size Sixty-Eight HEATING EQUIPMENT
Heating units · Vacuum-tube collectors · HVAC ducts and casings
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