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Diagram on Home Depot radiator vents package

CoachBoilermaker
CoachBoilermaker Member Posts: 157
edited October 19 in Strictly Steam

Bought my vents at plumbing supply, but was in HD for something else, and wanted to see the steam vents they carry. If HD still carries vents, there must still be steam in service.

What is (D) referring to? There is no radiator, just a pipe.

#6 = 2nd floor = .0935

#C = Attic = .1285

#D = High 2nd floor = .1850

#5 = 1st floor = .070

hd1.PNG

mattmia2

Comments

  • Jamie Hall
    Jamie Hall Member Posts: 24,230

    Probably a riser vent. There are no main vents shown on that diagram, so the riser vent will at least give the upper floor radiator some chance of getting steam… eventually.

    Br. Jamie, osb
    Building superintendent/caretaker, 7200 sq. ft. historic house museum with dependencies in New England
    Long Beach Edmattmia2
  • CoachBoilermaker
    CoachBoilermaker Member Posts: 157
    https://forum.heatinghelp.com/discussion/comment/1815162#Comment_1815162

    How does that work? Without a riser vent, the steam may never reach the 3rd floor? The riser vent helps to move more air out? The farther the radiator, the more air needs to be purged in between? Do you want far radiators to vent faster for this reason?

  • Jamie Hall
    Jamie Hall Member Posts: 24,230

    So many questions. A riser vent is really a variant on a main vent — just on a vertical pipe. The fundamental concept of venting is to vent the mains (and risers, if extensive) fast, to get steam to all radiators reasonably quickly and, perhaps as important, at more or less the same time.

    Then you use the radiator vents to control the heat output of specific radiators.

    Br. Jamie, osb
    Building superintendent/caretaker, 7200 sq. ft. historic house museum with dependencies in New England
    delcrossv
  • ethicalpaul
    ethicalpaul Member Posts: 6,130
    edited October 19
    https://forum.heatinghelp.com/discussion/comment/1815162#Comment_1815162

    Not TOO eventually! Pretty quick because that large vent on the riser will basically make the riser part of the main…it will let a lot of air escape before air starts wanting to push through those #4 and #5 vents…that top radiator might see steam before some others since the D vent is so close to it.

    PS: never buy home depot vents

    NJ Steam Homeowner.
    Free NJ and remote steam advice: https://heatinghelp.com/find-a-contractor/detail/new-jersey-steam-help/
    See my sight glass boiler videos: https://bit.ly/3sZW1el

    bburddelcrossv
  • Long Beach Ed
    Long Beach Ed Member Posts: 1,255

    P.P.S. - Never buy Home Depot vents.

    ethicalpaulmattmia2
  • CoachBoilermaker
    CoachBoilermaker Member Posts: 157

    FYI, the HD brand is called "Plumber's Edge"

    https://www.homedepot.com/p/PLUMBERS-EDGE-1-8-in-Steam-Angle-Vent-4-Set-Hole-0-040-PE885/300198963

  • mattmia2
    mattmia2 Member Posts: 10,458

    I guarantee this was not the answer anyone gave in your "what brand steam vent do you recommend" question.

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