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Coupling for steam pipe?

Do they make a simple coupling to join two pieces of steel steam pipe such that a corroded piece can be replaces by cutting both ends, replacing a new piece of pipe then use some type of compression coupling to join the two pieces?
I'm looking for something simple.

Comments

  • nicholas bonham-carternicholas bonham-carter Posts: 7,860Member
    You can clean up the area of a pinhole leak, and put a pipe clamp with rubber gasket over it. This will buy time, but is not a permanent repair.--NBC
  • New England SteamWorksNew England SteamWorks Posts: 1,227Member
    How big is the pipe? If 2" or less, relatively simple for a contractor to cut out the bad section, re-thread, and reconnect. More complicated if the pipe is larger than 2". Why don't you send us a picture?


    New England SteamWorks
    Service, Installation, & Restoration of Steam Heating Systems
    newenglandsteamworks.com
  • SWEISWEI Posts: 7,356Member
    Viega MegaPress is approved for low pressure steam.
  • BobCBobC Posts: 4,971Member
    I'd love to know how well the Megapress holds up over 20 years or so, I guess I'll have to wait and see.

    Bob
    Smith G8-3 with EZ Gas @ 90,000 BTU, Single pipe steam
    Vaporstat with a 12oz cut-out and 4oz cut-in
    3PSI gauge
  • RJ_4RJ_4 Posts: 484Member
    dresser coupling
    RJ
  • AbracadabraAbracadabra Posts: 1,948Member
    I wouldn't use a dresser on a steam. Maybe on a wet return, but only temporarily. If you do use a dresser, you need to support both sides and prevent the pipe from moving laterally.
  • RJ_4RJ_4 Posts: 484Member
    used them for years. no leaks
    RJ
  • ChrisJChrisJ Posts: 9,902Member
    How do you stop a steam pipe from moving laterally?
    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
  • Chris_LChris_L Posts: 133Member
    RJ said:

    dresser coupling

    One of these had been installed on 1" steam line in my house before I bought it. It worked fine for about 8 years before it started leaking. Fortunately, it was in readily accessible part of the basement.

    Lesson learned: re-pipe with a threaded connection.

  • ChrisJChrisJ Posts: 9,902Member
    Easily done with a pipe cutter, some threading oil and a ratcheting manual threader.

    Even easier with a power threader if you're lucky enough to own one.
    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
  • jumperjumper Posts: 1,351Member
    A Swiss company sells very expensive clamps that is supposed to work under far more challenging conditions than low pressure steam.
  • jumperjumper Posts: 1,351Member
    How about a Baker coupling? Grease the compression rings and don't over tighten. Will that allow movement from thermal cycles? Steam is miniscule pressure.
  • AbracadabraAbracadabra Posts: 1,948Member
    isn't a baker same as a dresser? just different companies.
  • ChrisJChrisJ Posts: 9,902Member
    edited March 2016
    All sounds like bandaids that will fail in the neat future.

    What's so hard about threading a pipe in place these days!? If it's not a shark bite or pex people throw a fit. :)










    .
    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
  • JUGHNEJUGHNE Posts: 5,780Member
    We still don't know the size of the pipe do we?

    I have a customer with a no longer needed 3 1/2" steam main (still connected to header) that is seeping on the bottom. If they needed to keep it then a welder would be the only solution. I have advised them to get the welder in the spring and cut and cap it off. Not a thread in place item ;) .
  • ChrisJChrisJ Posts: 9,902Member
    JUGHNE said:

    We still don't know the size of the pipe do we?

    I have a customer with a no longer needed 3 1/2" steam main (still connected to header) that is seeping on the bottom. If they needed to keep it then a welder would be the only solution. I have advised them to get the welder in the spring and cut and cap it off. Not a thread in place item ;) .

    Think about all of those steam mains and run outs that were all threaded by hand.

    2", 3" etc.

    Welding I suppose is fine too, but like threading it's a skill.
    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
  • Alan WelchAlan Welch Posts: 159Member
    Why not use a union ? Pretty simple if you are replacing a section.
  • JUGHNEJUGHNE Posts: 5,780Member
    I think about someone with really big arms everytime I look at 3 to 4" threaded pipe that was installed in 1915 before electricity was even in this town..........but this was done standing on the ground with a good pipe vise. Not on an 8' stepladder as some repairs might require. Is 3 1/2" threader and fittings common, just curious.
  • ChrisJChrisJ Posts: 9,902Member
    edited March 2016
    @JUGHNE

    But all in all, you know my meme is still correct regarding modern plumbers.


    I shouldn't even say "modern"

    Young plumbers......
    Guys only using pex and who would actually use a shark bite on a job.
    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
  • JUGHNEJUGHNE Posts: 5,780Member
    Yes, refusing to use any type of PEX for H & C supplies has helped to ease me out of most of the plumbing work.....copper sweat or black pipe work only is pretty well all I do in that trade.
  • vaporvacvaporvac Posts: 1,516Member
    JUGHNE said:

    I think about someone with really big arms everytime I look at 3 to 4" threaded pipe that was installed in 1915 before electricity was even in this town..........but this was done standing on the ground with a good pipe vise. Not on an 8' stepladder as some repairs might require. Is 3 1/2" threader and fittings common, just curious.

    I don't know how common, but I'm guessing not very. I have a 3 1/2" main and my plumbing supply store was THRILLED to sell me a 4" to 3.5" T fitting. They said they had 2 left and hadn't sold one in about 10 years. I almost bought the other "just in case".

    @ChrisJ , I had a terrible time finding a compression fitting when I recently changed out the broken fixture in my old claw foot tub. I finally found one at my old faithful old-fashioned supply store. Every other plumbing supply ONLY sold shark bite fittings.
    Two-pipe Trane vaporvacuum system; 1466 edr
    Twinned, staged Slantfin TR50s piped into 4" header with Riello G400 burners; 240K lead, 200K lag Btus. Controlled by Taco Relay and Honeywell RTH6580WF
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