To get email notification when someone adds to a thread you're following, click on the star in the thread's header and it will turn yellow; click again to turn it off. To edit your profile, click on the gear.
The Wall has a powerful search engine that will go all the way back to 2002. Use "quotation marks" around multiple-word searches. RIGHT-CLICK on the results and choose Open Link In New Window so you'll be able to get back to your results. Happy searching!
In fairness to all, we don't discuss pricing on the Wall. Thanks for your cooperation.
Need to contact us? Visit

Repacking Steam Rad Valves

Happy soon to be Thanksgiving all!


On my one pipe system 3 out of the 8 rad valves are leaking steam at the valve.  They need to be repacked.  Any ideas on which packing I should use before I start wandering around the plumbing supply store?

Both for the stem and the seat connection just under the stem.

Thanks for info...

"Hey, it looks good on you though..."


  • Valve packing

    Graphite impregnated string is used for replacing. What is your pressure? --NBC
  • Steam_StarterSteam_Starter Member Posts: 87


    just under 2 psi out

    0.5 psi in

    I used the string and lo and behold, no more leaking!

    Sorry it took so long for me to respond but I have been "recovering" from Thanksgiving..

    "Hey, it looks good on you though..."
  • RobRob Member Posts: 29
    Tighten the Packing Nuts.

    I just repacked my radiator shutoff valves a few weeks ago, and found they loosened up.  I think the string settles in after a few heating cycles requiring the re-tightening of the nuts to seal the valve stem.
  • BanBan Member Posts: 79
    Packless Valves

    How does the Dunham packless valve work (they have wood handles). I have yet to take one apart.
    Richard Ban

    Detroit, Michigan (Dunham 2-pipe vacuum)
This discussion has been closed.


It looks like you're new here. If you want to get involved, click one of these buttons!