Reliable vacuum and vacu-vapor heating equipment (1915)
The Bishop-Babcock-Becker Co. · The Bishop-Babcock-Becker Co. · leaf 49
connected to Expansion Tank, a steady vacuumis always on the Vacuum Controller, which assures perfectoperation of Automatic Electric Switch—the vacuum pumpcan operate only when necessary. An Expansion Tank of proper size is always includedwith RELIABLE Return Line Outfits. Forty-Five THE RELIABLE… … RENEWABLE BRASS BALL VALVE which, with knuckle ball joint at top, al-ways insures positive seating of thermalmember. The Vacu-Trap prevents escapeof steam. !\ ROUNDED BRASS SEAT-Dirt cannotaccumulate on it:_ Seat is renewable. THERMAL MEMBER —heavy phosphor bronze, filled with volatilefluid.…
Heating units · Vacuum-tube collectors · HVAC ducts and casings
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