. Price list J: material for mills, power plants and water works. The Allen Automatic Air Valve Made Entirely of Metal. No expansion Pos+, Ring, or Spring. NO valve now on the market shows better resultsunder continuoususage. Its long-lasting qualities especially commend it to theTrade. Valve troubles are needless. Try the Allen Automatic Air Valve EACH, $ THENORWALL AUTOMATIC AIR VALVE AN automatic valve operating solely by the heat acting directlyon the water and air. Made entirely of metal. No expansionpost, ring, spring, or packing. The action is quick, direct, and vents e

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. Price list J: material for mills, power plants and water works. The Allen Automatic Air Valve Made Entirely of Metal. No expansion Pos+, Ring, or Spring. NO valve now on the market shows better resultsunder continuoususage. Its long-lasting qualities especially commend it to theTrade. Valve troubles are needless. Try the Allen Automatic Air Valve EACH, $ THENORWALL AUTOMATIC AIR VALVE AN automatic valve operating solely by the heat acting directlyon the water and air. Made entirely of metal. No expansionpost, ring, spring, or packing. The action is quick, direct, and vents every section in the radiator instantly and no adjustment. Easily cleaned. Cannot be tampered with EACH, $ 4216x4$ 16 5( l 50:

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Keywords: ., bookcentury1900, bookdecade1910, booksubjectdivision22, bookyear1