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drop header piping?

jonny88
jonny88 Member Posts: 1,139
in Strictly Steam
Hi,i have been looking at pics of drop headers.my ? is why do you need unions on the risers.Thanks

Comments

  • ChrisJ
    ChrisJ Member Posts: 16,231
    Unions

    I can't speak for everyone but I used two 12" nipples for each riser and needed something to couple them, so why not unions?  This also allows me to replace the boiler with an identical one really easy.



    I don't think you "need" them there but you're going to need one somewhere just to get the parts together.
    Single pipe quasi-vapor system. Typical operating pressure 0.14 - 0.43 oz. EcoSteam ES-20 Advanced Control for Residential Steam boilers. Rectorseal Steamaster water treatment
  • gerry gill
    gerry gill Member Posts: 3,078
    you dont,

    if you have one in the header.
    gwgillplumbingandheating.com
    Serving Cleveland's eastern suburbs from Cleveland Heights down to Cuyahoga Falls.

  • jonny88
    jonny88 Member Posts: 1,139
    drop header piping?

    thanks for your answers.from the pics the unions do me it look very sharp.i was asking as i have a steam boiler coming up and am going to try my first drop header.thanks again
  • Steamhead
    Steamhead Member Posts: 17,314
    A drop header

    is only one part of a good installation- the pipe sizes and general configuration have to be right also. But I'm sure you know that. Post some pictures when you're done. 
    All Steamed Up, Inc.
    Towson, MD, USA
    Steam, Vapor & Hot-Water Heating Specialists
    Oil & Gas Burner Service
    Consulting
  • pipeking
    pipeking Member Posts: 252
    header oversized?

    can u oversize a drop header to where it causes inefficientcy?
  • Hap_Hazzard
    Hap_Hazzard Member Posts: 2,846
    Theoretically... maybe,

    but I'm not even sure what the theoretical limits are, and practical limitations like budget and available materials impinge on the size a lot sooner. It really has more to do with diminishing returns than theoretical limits. At a certain point it just doesn't make sense to pay for bigger pipe and fittings because the expense can't be offset by any comparable increase in efficiency.
    Just another DIYer | King of Prussia, PA
    1983(?) Peerless G-561-W-S | 3" drop header, CG400-1090, VXT-24
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