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Radiator Vents

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ksd99
ksd99 Member Posts: 77
in Strictly Steam
I have Hoffams 1A and Hoffman 40 on my radiators, I know that 1a I can adjust the speed that the steam fills the radiator from 1 to 8, and the Hoffman 40 is a non adjustable speed. Ok my question what setting on the 1a is the same as the 40? I hope that made sense, I am just interested to know.
New owner of 1 Pipe Steam Boiler - learning all I can- no real steam pro in S.W. Michigan - if you know of 1 -let me know.

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  • Jamie Hall
    Jamie Hall Member Posts: 23,338
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    The 40 is about half way between the 1A on 2 and on 3.
    Br. Jamie, osb
    Building superintendent/caretaker, 7200 sq. ft. historic house museum with dependencies in New England
  • ksd99
    ksd99 Member Posts: 77
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    Thanks Jamie.
    New owner of 1 Pipe Steam Boiler - learning all I can- no real steam pro in S.W. Michigan - if you know of 1 -let me know.
  • BobC
    BobC Member Posts: 5,478
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    The Hoffman 1a is hard yo adjust because of the sloppy fit on the adjustable bonnet, make sure the bonnet is centered or the vent rate can be pretty far off the markings.

    Bob
    Smith G8-3 with EZ Gas @ 90,000 BTU, Single pipe steam
    Vaporstat with a 12oz cut-out and 4oz cut-in
    3PSI gauge
  • ksd99
    ksd99 Member Posts: 77
    Options
    Thanks Bob.
    New owner of 1 Pipe Steam Boiler - learning all I can- no real steam pro in S.W. Michigan - if you know of 1 -let me know.

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