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Rococo American Radiator Air Vent Location?

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MRW
MRW Member Posts: 5
in Strictly Steam
I recently picked up two 38" tall 3-column Rococo radiators made by American Radiator Co. The guy I purchased them from had used them in a hot water system, and I'm adapting it for my 1-pipe steam system. So as such, there is currently no tapping for an air vent. There is a boss on the center column, very near the bottom... would this be the correct location to drill and tap for the air vent? It just seems so... low. I attached a pic of someone else's Rococo, with the boss circled in red for reference. There are no other such areas (except for the air bleed tapping at the top, which I was going to plug for my purposes). Just wanted to check before I pull out the drill. Thanks in advance.

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  • Fred
    Fred Member Posts: 8,542
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    I have the very same radiator, although always fitted for steam. The vent is drilled about 3 inches below the center cross bar
    MRW
  • Steamhead
    Steamhead Member Posts: 16,843
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    That boss is the correct steam vent location on a water-type radiator. On a steam-type, the boss is usually a bit higher.
    All Steamed Up, Inc.
    Towson, MD, USA
    Steam, Vapor & Hot-Water Heating Specialists
    Oil & Gas Burner Service
    Consulting
    MRW
  • MRW
    MRW Member Posts: 5
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    Thanks for the insight guys, I didn't realize they made different designs/castings depending on the intended use. I'll go ahead and drill the boss. Thanks again!

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