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Reliable vacuum and vacu-vapor heating equipment (1915)
The Bishop-Babcock-Becker Co. · The Bishop-Babcock-Becker Co. · leaf 35
B .5* 3 cr- a 3 aa O> I 3 M ! I I I I I J I II 3 M w < 5 © T3O ^3 Thirty-One THE RELIABLE AIR LINE RELIABLE DUPLEX AIR LINEELECTRIC VACUUM PUMPINSTALLATION … Top View The above illustration shows method of cross-connecting two RELIABLE Electric VacuumPumps for use with steam heating systems having alarger amount of radiation than one pump canhandle. Duplex installations are also used wherea reserve unit is desired. Thirty-Two VACUUM HEATING EQUIPMENT…Heating units · Vacuum-tube collectors · HVAC ducts and casings
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