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Pipe two steam one header

yaswant1yaswant1 Posts: 12Member
Is it possible to pipe two steam radiator on same header?header is 1-1/4.

Comments

  • delta Tdelta T Posts: 754Member
    What do you mean by 'header'? A header is the horizontal section of pipe that connects to the risers (outlets) of the boiler.
    1 1/4" is really small for a header, usually 2" minimum and that would be a very small boiler. Pictures may help....
  • Jamie HallJamie Hall Posts: 10,672Member
    Or do you, perhaps, mean "runout" when you refer to header? And even there, the answer is... probably not. 1 1/4 inch is about as small a runout as one can use, so the radiators would each have to be pretty small.
    Jamie



    Building superintendent/caretaker, 7200 sq. ft. historic house museum with dependencies in New England.



    Hoffman Equipped System (all original except boiler), Weil-Mclain 580, 2.75 gph Carlin, Vapourstat 0.5 -- 6.0 ounces per square inch
  • yaswant1yaswant1 Posts: 12Member
    Sorry I meant the pipe from header connecting the radiator
    Is 1-1/4”.is it possible using a tee to pipe a next radiator to heat a room?
  • EBEBRATT-EdEBEBRATT-Ed Posts: 5,921Member
    Depends on the radiator sizes. If you post pictures and dimensions we can size the pipe.

    It's doubtful that 1 1/4 can support two radiators unless they are small
  • yaswant1yaswant1 Posts: 12Member
    This radiator makes the room very hot even if I adjust the vent
  • yaswant1yaswant1 Posts: 12Member
    Other room is 90sq ft
  • yaswant1yaswant1 Posts: 12Member
    One room is 180 sq ft
  • yaswant1yaswant1 Posts: 12Member
    Radiator will be 2’ apart
  • Jamie HallJamie Hall Posts: 10,672Member
    We need the EDR of the radiators -- not the square footage of the room.
    Jamie



    Building superintendent/caretaker, 7200 sq. ft. historic house museum with dependencies in New England.



    Hoffman Equipped System (all original except boiler), Weil-Mclain 580, 2.75 gph Carlin, Vapourstat 0.5 -- 6.0 ounces per square inch
  • SteamheadSteamhead Posts: 13,132Member
    @yaswant1 , where are you located?
    All Steamed Up, Inc.
    "Reducing our country's energy consumption, one system at a time"
    Steam, Vapor & Hot-Water Heating Specialists
    Oil & Gas Burner Service
    Baltimore, MD (USA) and consulting anywhere.
    https://heatinghelp.com/find-a-contractor/detail/all-steamed-up-inc
  • yaswant1yaswant1 Posts: 12Member
    Jamie the EDR is 28.located in nj
  • yaswant1yaswant1 Posts: 12Member
  • yaswant1yaswant1 Posts: 12Member
    Basics diagram what I would like to do,if possible
  • FredFred Posts: 7,920Member
    The present radiator is 28 EDR. Will the new one be the same? If the new one is larger, it will likely steal the steam from the other radiator as it will likely allow steam to flow more easily into it. A 1.25 pipe can support about 55 EDR (IIRC) so it may work if both rads are the same size and the venting is reasonable the same. We've seen cases where it works in some configurations and doesn't in others. It's kind of a crap shoot.
  • yaswant1yaswant1 Posts: 12Member
    The new radiator will be smaller fred
  • FredFred Posts: 7,920Member
    yaswant1 said:

    The new radiator will be smaller fred

    In that case, the 1.25" pipe should be able to support the load. You may have to slow the venting down on the larger radiator to get steam to both but it should work.
  • yaswant1yaswant1 Posts: 12Member
    Thank you Fred for your insight and help!
  • Danny ScullyDanny Scully Posts: 1,193Member
    edited April 18
    @yaswant1, I doubt you’ll be able to acquire a twin elbow as you’ve drawn. You can use a tee, but be sure the steam enters either “run” of the tee, but not the “bull” of the tee. And, if you can source a twin elbow, let me know :wink:
  • yaswant1yaswant1 Posts: 12Member
    I was looking for the double elbow over the internet but can’t find black pipe they have in pvc.but I was thinking about using the tee.thanks Danny.
  • Jamie HallJamie Hall Posts: 10,672Member

    @yaswant1, I doubt you’ll be able to acquire a twin elbow as you’ve drawn. You can use a tee, but be sure the steam enters either “run” of the tee, but not the “bull” of the tee. And, if you can source a twin elbow, let me know :wink:

    Mightn't he be better served, @Danny Scully, using a T, entering the bull, then two very short nipples at the ends of the run, then 90s to get the final runouts to the radiators? Only way I can think of two make sure that one side or the other isn't pitched the wrong way... Or he could do it as you've suggested, but again creating swing joints to get the pitch.
    Jamie



    Building superintendent/caretaker, 7200 sq. ft. historic house museum with dependencies in New England.



    Hoffman Equipped System (all original except boiler), Weil-Mclain 580, 2.75 gph Carlin, Vapourstat 0.5 -- 6.0 ounces per square inch
  • Danny ScullyDanny Scully Posts: 1,193Member
    “I don’t think so @Jamie Hall” said as Al to Tim in Home Improvement :lol:
  • FredFred Posts: 7,920Member
    @Danny Scully and @Jamie Hall , I suspect that is a nipple coming out of the floor and the actual riser is in the wall below. Couldn't he take that nipple out, add a short/close nipple and a wye and then nipple/elbow in both directions?
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