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My first 4" Header!!

delta T
delta T Member Posts: 884
edited September 2017 in THE MAIN WALL
This is the first 4" header I've ever built.

We cut out the old welded header, equalizer and hartford loop (yes, all of that was welded). The old header was 3" (mfg calls for 4) and was piped wrong, the old hartford loop was centered on the water line and was two pipe sizes too big, and the equalizer had a really funky offset in it, and did I mention ALL OF THIS WAS WELDED TOGETHER!!!!

Anyways, Here is the new one! Have never done a 4" one before, a few 3", but never a 4".


    EBEBRATT-Ed Member Posts: 15,829
    Really nice job!!
    delta T
  • GW
    GW Member Posts: 4,736
    That's sweet!

    Do you blue monster tape the threads? I'm curious my some guys tape these steam joints

    How did you nail that 4" between the risers? You have a way to thread 4"?

    Gary Wilson
    Wilson Services, Inc
    Northampton, MA
    delta T
    HVACNUT Member Posts: 5,887
    Very nice!
    What's the white control on top of the boiler? I think it says Tripp Lite.
    delta T
  • ChrisJ
    ChrisJ Member Posts: 15,913
    GW said:

    That's sweet!

    Do you blue monster tape the threads? I'm curious my some guys tape these steam joints

    How did you nail that 4" between the risers? You have a way to thread 4"?


    A lot of guys here use blue monster tape with a dab of Megaloc on top. I did that on most of mine, but threads I thought that came out good I used Megaloc alone. Every connection into the boiler got both tape and dope though.

    I could be wrong, but I think those recommendations came originally from Gerry Gill and Steamhead.
    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
    delta T
  • SeanBeans
    SeanBeans Member Posts: 520
    Can a hartford loop be too big?
  • Steamhead
    Steamhead Member Posts: 17,000
    Nice looking job so far, and I'll bet that Peerless runs a whole lot better when it's done. Only thing I would have changed was to make it a drop header.

    Can't wait to see the pic of the finished job.
    All Steamed Up, Inc.
    Towson, MD, USA
    Steam, Vapor & Hot-Water Heating Specialists
    Oil & Gas Burner Service
  • EzzyT
    EzzyT Member Posts: 1,297
    Looking good so far, just curious how close that flue pipe is to the pvc horizontal sewer line.
    E-Travis Mechanical LLC
    delta T
  • delta T
    delta T Member Posts: 884

    Blue monster with weld on blue pipe dope. We ordered the nipple pack spec'd in the installation manual, one of my suppliers has a full fab shop and cut all these to the lengths we gave them. But yes I can thread up to 4" using a rigid 141 attached to my 300 threader. The only limitation on the 141 is that the shortest piece you can cut is about 10" long. Really cool piece of machinery though, there are a few videos on youtube if you are curious how it actually works.



    well not really, its just that if you use welded fittings, on this particular boiler, the radius is too long to get the hartford loop at the correct height given the size they used (3"). As I said the connection for the hartford loop was literally centered on the water line.


    I wish we could have done a drop header, but as the owner already spent an outrageous sum with the previous company who screwed all this up, she did not want the extra expense. We did offer it as an option though.


    The white box is a voltage conditioner. The power here is very dirty and they were going through S86's like candy.


    It looks really close in this pic, but it is actually about 4" away from the double wall.

    Welder came yesterday and welded a flange on the 4" main, and a 3" threadolet on one of the 3" dry returns that had a rotted thread on it. Got all the wet returns tied in yesterday as well. Today is threading 3 pieces of 4" to tie the main in, install the main vents (Gorton #2's on each of the two mains), clean the feeder, LWCO, and sight glass, get all the controls back on and wired, re-pipe the water supply tidy up the wiring, finish all my piping support, fill and skim the boiler, and fire it up! Yeah......that's all I have to do today....

    More pics to come
  • New England SteamWorks
    Looking Good!
    New England SteamWorks
    Service, Installation, & Restoration of Steam Heating Systems
    delta T
  • gerry gill
    gerry gill Member Posts: 3,078
    That looks great, and it will look even better when your done taking a razor knife to the left over exposed pipe tape and dope. I usually do that during skimming as a way to kill boredom. Looking very sharp. Well done!
    Serving Cleveland's eastern suburbs from Cleveland Heights down to Cuyahoga Falls.

    delta TNew England SteamWorks
  • Paul S_3
    Paul S_3 Member Posts: 1,261
    Nice job
    ASM Mechanical Company
    Located in Staten Island NY
    Servicing all 5 boroughs of NYC.
    delta T