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Steam valve Q

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guzzinerd
guzzinerd Member Posts: 387
edited December 9 in Strictly Steam

Any reason why I couldn't pack the stem on this valve with graphite rope? I've contacted Tunstall for rebuild kits and all they have are tvr conversion kits that are $$$$ and wouldn't work with my built-in rads.

Thanks

1000027705.jpg

Bryant 245-8, 430k btu, 2-pipe steam in a 1930s 6-unit 1-story apt building in the NM mountains. 26 radiators 3800sqf

Comments

  • mattmia2
    mattmia2 Member Posts: 15,513
    edited December 9

    isn't that a packless valve, doesn't that disc on top of the bellows make the seal for the stem?

  • guzzinerd
    guzzinerd Member Posts: 387
    edited December 9

    It is packless. These are from the 20s and some are leaking steam.

    Maybe I can just disassemble and repolish the mating surfaces?

    Bryant 245-8, 430k btu, 2-pipe steam in a 1930s 6-unit 1-story apt building in the NM mountains. 26 radiators 3800sqf

  • mattmia2
    mattmia2 Member Posts: 15,513

    I think you have to figure out where it is leaking. If it leaks where the stem connects to the bellows or the bellows are cracked you might be able to fix those with some rtv or a tiny drop of solder. I think NOS hoffman vapor valves show up on e-bay a lot.

    The tunstall insert I think more or less converts it to a TRV.

    guzzinerd
  • guzzinerd
    guzzinerd Member Posts: 387
    edited December 9

    Thanks. I'll look at the bellows one by one (25 of them) after I find a 2", 8-point deep socket

    Bryant 245-8, 430k btu, 2-pipe steam in a 1930s 6-unit 1-story apt building in the NM mountains. 26 radiators 3800sqf

  • guzzinerd
    guzzinerd Member Posts: 387
    1000027735.jpg

    Nice thing about these cabinet rads is i don't need a mirror to find leaky valves, just have to look under it's cover.

    Bryant 245-8, 430k btu, 2-pipe steam in a 1930s 6-unit 1-story apt building in the NM mountains. 26 radiators 3800sqf

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