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    Repacking Steam Rad Valves (5 Posts)

  • Steam_Starter Steam_Starter @ 9:43 AM
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    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...

  • nicholas bonham-carter nicholas bonham-carter @ 9:56 AM
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    Valve packing

    Graphite impregnated string is used for replacing. What is your pressure? --NBC
  • Steam_Starter Steam_Starter @ 1:41 PM
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    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..

  • Rob Rob @ 4:54 PM
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    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.
  • Ban Ban @ 3:57 AM
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    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)
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