Welcome! Here are the website rules, as well as some tips for using this forum.
Need to contact us? Visit https://heatinghelp.com/contact-us/.
Click here to Find a Contractor in your area.

F&T Steam Traps on One Pipe System???

Options
msmor23
msmor23 Member Posts: 14
Any ideas on why my one pipe steam system would have these f&t steam straps? I'm assuming this is wrong, as nothing I've read indicates you put these on one pipe systems (and yes, I'm positive I have a one pipe stream system). Steam traps are 37 year old (stamped 10/13/1984). Two years ago I removed these vacuum breakers (pics attached) that were installed at end of mains (and replaced with Big Mouths). Vacuum breakers were installed ahead of & above the steam traps. Big Mouths installed where vacuum breakers were previously located.

Assuming these steam traps were incorrectly installed- should I remove? Or just leave on? I get occasional hammer, although still trying to find exact cause (some from incomplete insulation that I'm working to restore).

Watson McDaniel float & thermostatic steam traps (manufactured 1984).

This is my fourth winter in the house so trying to get this system running as best I can. This forum has been quite helpful so going back to the well. Thanks for looking.









Comments

  • Jamie Hall
    Jamie Hall Member Posts: 23,323
    Options
    Normally it's true -- you wouldn't need them. However, in that first picture I note that the return line to the boiler appears to be relatively high (is it the same trap in both pictures? In which case the return line was clearly lowered and replaced with copper at some point -- no problem with that). If the return lines were high, but joined somewhere before dropping below the boiler water line, the F&Ts may have been installed to prevent steam from getting into them -- which you don't want. And in which case, you may still need them. It's a matter of where is the boiler water line in relation to the return lines.
    Br. Jamie, osb
    Building superintendent/caretaker, 7200 sq. ft. historic house museum with dependencies in New England
  • Steamhead
    Steamhead Member Posts: 16,842
    Options
    Does the condensate return to the boiler by gravity, or is it pumped into the boiler?
    All Steamed Up, Inc.
    Towson, MD, USA
    Steam, Vapor & Hot-Water Heating Specialists
    Oil & Gas Burner Service
    Consulting
  • msmor23
    msmor23 Member Posts: 14
    Options
    Steamhead- thanks. So here we go...There is a condensate return system connected. I have no idea if it even works. Is there a good way to test it? It seems pretty old. Going to go back and dust it off to see if I can determine manufacture date. Part of the unit does have "rebuilt seal" back in 2000.
  • Steamhead
    Steamhead Member Posts: 16,842
    Options
    msmor23 said:

    Steamhead- thanks. So here we go...There is a condensate return system connected. I have no idea if it even works. Is there a good way to test it? It seems pretty old. Going to go back and dust it off to see if I can determine manufacture date. Part of the unit does have "rebuilt seal" back in 2000.

    Post some pics.
    All Steamed Up, Inc.
    Towson, MD, USA
    Steam, Vapor & Hot-Water Heating Specialists
    Oil & Gas Burner Service
    Consulting
  • msmor23
    msmor23 Member Posts: 14
    Options
    Steamhead- here are some picture of condensate pump
  • msmor23
    msmor23 Member Posts: 14
    Options


  • msmor23
    msmor23 Member Posts: 14
    Options
    And Jamie- here are some more pics of the return line. The first round of pics, as well as these, are all from the same main/steam trap/return. As always- thank you


  • msmor23
    msmor23 Member Posts: 14
    Options
    Jamie- just for reference- where that return transitions to horizontal- it's about 13 in off basement floor
  • EBEBRATT-Ed
    EBEBRATT-Ed Member Posts: 15,540
    Options
    @msmor23

    You need F & T traps because you have a condensate pump The big mouths or air vents should be installed on the steam trap outlet tapping or downstream of the steam trap if the traps discharge to a wet return that will not drain. If the traps discharge to the condensate pump with no water traps in the line then you don't need vents the condensate pump vent is the only vent you need

    We need more pictures of the entire system to evaluate

    Possibly the condensate pump can be eliminated