National boilers, radiators, and specialties: catalog no26 . Novus Non-Adjustable Automatic Air Valve with or without Siphon Novus Non-Adjustable Siphon, Automatic Air and Vacuum Valve Non-Adjustable The valve is made entirely of best steam metal and phosphorbronze. Vents to the last molecule of air and keeps it out after being expelled. It is absolutely automatic and mechanically perfect. It can be easily taken apart and cleaned should the occasionarise, making it as good as new. The opening of windows and doors does not in any way affectits proper function. It operates on the fraction of an
National boilers, radiators, and specialties: catalog no26 . Novus Non-Adjustable Automatic Air Valve with or without Siphon Novus Non-Adjustable Siphon, Automatic Air and Vacuum Valve Non-Adjustable The valve is made entirely of best steam metal and phosphorbronze. Vents to the last molecule of air and keeps it out after being expelled. It is absolutely automatic and mechanically perfect. It can be easily taken apart and cleaned should the occasionarise, making it as good as new. The opening of windows and doors does not in any way affectits proper function. It operates on the fraction of an ounce pressure. It closesagainst the loss of steam, the loss of water and the return of air. It saves coal and maintains the efficiency of every section ofthe radiator—the last as well as the first. Full efficiency, guaranteed five Prices Novus Non-Adjustable Automatic Air Valve, each SI .50 Novus Non-Adjustable Siphon Air and Vacuum Valve, ea. 66 NATIONAL HEATING SPECIALTIES.
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License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1920, booksubjectsteambo, bookyear1920
