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Identifying steam trap replacements.

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Msteam1
Msteam1 Member Posts: 17
in Strictly Steam

So my building has 20 odd radiators and up till now I thought I had two styles of steam traps. The Hoffman 17c which I have had success replacing the cage units and have happy radiators. (For the most part)

I also have Milvaco H 100-6…here’s the kicker. As I’ve been trying to get functional replacements I have noticed that the interiors aren’t all matching up.

Some have a nut inside similar to the Hoffmanns(typically removed and discarded)


The others are a smooth bottom base…help me out, do I have 3 types of steam traps?

Anyone have a link to the correct replacements?

Pictures below will show the one new replacement I have purchased, a jones and Barnes 3143


The only other item of note is that a few of the caps have an additional B stamped on them

IMG_1257.jpeg IMG_1258.jpeg IMG_1256.jpeg IMG_1269.jpeg IMG_1270.jpeg IMG_1287.jpeg IMG_1286.jpeg IMG_1285.jpeg

Comments

  • Jamie Hall
    Jamie Hall Member Posts: 26,679

    Contact Tunstall. They can find the right replacement.

    Br. Jamie, osb
    Building superintendent/caretaker, 7200 sq. ft. historic house museum with dependencies in New England
    Msteam1
  • Steamhead
    Steamhead Member Posts: 18,147
    edited November 12

    The "hex" is a removable seat. On the second (dark gray) radiator, are you sure there isn't a hex in the bottom, covered by dirt and/or water?

    All Steamed Up, Inc.
    Towson, MD, USA
    Steam, Vapor & Hot-Water Heating Specialists
    Oil & Gas Burner Service
    Consulting
  • Scott.Malo
    Scott.Malo Member Posts: 24

    Hello Msteam1! Scott here from Tunstall. The Milvaco's must have had some fun back in the day because they made an H-100-6 and an H100-6. Clever, right? Anyways, the B&J cage unit you have (3143) is listed for both of those part numbers so it does appear that you have the correct repair kit. It also says "seat in" for both so it would appear that no matter which model(s) you have, leave that hex seat in and see if that works.

    mattmia2
  • Msteam1
    Msteam1 Member Posts: 17

    Thanks everyone! Yes they do appear to be mildly different models. The gray one does NOT have that seat down inside. It’s completely clean. Will pick up more of the 3134 cage units and see what happens

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