Reliable vacuum and vacu-vapor heating equipment (1915)
The Bishop-Babcock-Becker Co. · The Bishop-Babcock-Becker Co. · leaf 24
Nos.224922592269 … A proper sizeStrainer with checkvalve is furnishedwith all RELIABLEElectric Air Line Out-fits. It is used toprevent foreign mat-ter from entering thevacuum pump, and tocatch any rust, etc.,which often accumu-lates in the system be-tween heating seasons.The check valve automatically prevents air…
Heating units · Vacuum-tube collectors · HVAC ducts and casings
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