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I need help please

HeatJockey
HeatJockey Member Posts: 37
in Strictly Steam
Working on an old pre war steam system in Northern New Jersey.  A steam main in the basement is rotted and needs replacing. It is 4 1/2" pipe.  Never seen this size before. I am willing ti take a chance and downsize this section to  4" but can not find a 4 1/2" x 4" bushing.  (I actually need 2)   I've checked all my supply houses, industrial supply's, and the internet.  No luck.   I really don't want to repipe an entire building. Does anyone have any sources or suggestions?  Thank you

Comments

  • Rod
    Rod Posts: 2,067
    A DIY 4 1/2 to 4 inch Pipe Adapter

    Hi-  I've worked with big pipe but have never run across a 4 1/2 inch pipe. The first thing that comes to mind is that 4 inch black pipe I believe is 4 1/2 inch in outside diameter. Possibly you could make you own fittings by slipping a piece of 4 inch pipe into the 4 1/2 pipe and welding them together. You would probably want to ream the uphill edge of the 4 inch pipe with a grinder to help smooth the transition flow.

    Just a wild thought ! :)

    - Rod
  • JStar
    JStar Member Posts: 2,752
    Pipe

    Reducing the pipe size will create a place for the condensate to be trapped, and cause water hammer or sluggish wet-steam. I would highly advise against it.



    As Rod said, make sure that it really is 4-1/2" and not just 4".
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