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cap for steam....

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kcopp
kcopp Member Posts: 4,433
in Strictly Steam
How do you cap a 2" steel steam line w/o the use of a threaded cap? got 2 " line that is out of shape and the die won't fit on..... ty,kpc

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  • nicholas bonham-carter
    nicholas bonham-carter Member Posts: 8,578
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    capping distorted pipe

    can you find some way to put in an internal plug [wood, rubber, plastic]? then drill the end to secure the plug with a bolt. alternatively, maybe there is a rubber cap for vent stacks in that size, which is secured by a screw clamp.

    cranking down the pressure to a few ounces would be very important to prevent the plug from being fired out, a la potato cannon!--nbc
  • jpf321
    jpf321 Member Posts: 1,568
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    maybe...

    theytry fire rated expanding foam. you can secure it with sticks of plumbers epoxy, the kind that hardens like steel. although I'm not sure what effects stream has on expanding foam. you wouldn't want it to dissolve into your boiler. does a soda can fit inside thee pipe?
    1-pipe Homeowner - Queens, NYC

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  • TomM
    TomM Posts: 233
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    plug?

    plugging it with something sounds kinda ghetto.  If you aint gonna run new threads on the pipe, weld it. 

    There was an error rendering this rich post.

  • Big-Al_2
    Big-Al_2 Member Posts: 263
    edited October 2010
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    McMaster Sells An Expansion Plug

    McMaster-Carr sells an expansion "Test" plug for 2" pipe.  It's rated for 225 degrees. I attached a pdf of the catalog page.  I'm not sure how long it would last.



    2554K75

    Bolt-Tight High-Pressure Test Plug for Pipe ID 1.73" to 2.07"

    In stock at $33.64 Each



    If it were mine, I'd get a weld-on cap.
  • LarryC
    LarryC Member Posts: 331
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    Shorten the pipe and rethread.

    If there is room, cut the pipe back and rethread?
  • kcopp
    kcopp Member Posts: 4,433
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    I would but....

    There is only 3" to work w/... and that is partially out of wack. The bolt on type would probabaly work....ty
  • Charlie from wmass
    Charlie from wmass Member Posts: 4,322
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    Remove the pipe stub.

    The temp caps are just that and I know of none rated for steam. Take it out as you would a radiator spud from the fitting it is in and use a pipe plug.
    Cost is what you spend , value is what you get.

    cell # 413-841-6726
    https://heatinghelp.com/find-a-contractor/detail/charles-garrity-plumbing-and-heating
  • Long Beach Ed
    Long Beach Ed Member Posts: 1,210
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    As Charlie says...

    ... the only way is the right way.  Cut the nipple out with a Sawzall, cutting a slot or two in it internally to loosen and insert a plug. 
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