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3-D Printing Hoffman #7 Steam Radiator Valve Handles

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HeatingHelp
HeatingHelp Administrator Posts: 650
edited January 2020 in THE MAIN WALL
3-D Printing Hoffman #7 Steam Radiator Valve Handles

Hoffman has not made this steam radiator valve since the 1930s. 3-D printing is used to create this otherwise obsolete part.

Read the full story here


GordoPC7060IronmanSlowYourRoll

Comments

  • Controlsgirl
    Controlsgirl Member Posts: 13
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    Why did they stop making this valve?
  • Grallert
    Grallert Member Posts: 667
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    The market for these valve is now only the service market. There was a time these were being installed on a regular basis across the country. Those days are gone along with most of the companies that made the equipment. unfortunate for the folks taking care of these systems.
    Miss Hall's School service mechanic, greenhouse manager,teacher and dog walker
  • Controlsgirl
    Controlsgirl Member Posts: 13
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    I have them on all of my radiators in my home and none of the radiators have steam traps. The boiler guy wants to rip them all out, use normal valves and add steam traps...
  • KC_Jones
    KC_Jones Member Posts: 5,745
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    I have them on all of my radiators in my home and none of the radiators have steam traps. The boiler guy wants to rip them all out, use normal valves and add steam traps...

    What is his reasoning? Are they broken?
    2014 Weil Mclain EG-40
    EcoSteam ES-20 Advanced Boiler Control
    Boiler pictures updated 2/21/15
  • Gordo
    Gordo Member Posts: 857
    edited January 2020
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    @Controlsgirl : In general, the Hoffman #7 valve can be successfully rebuilt to full functionality (I humbly direct your kind attention to my videos on the topic). If they are properly adjusted, and with a Vaporstat on your boiler, you theoretically do not need steam traps.
    All Steamed Up, Inc.
    "Reducing our country's energy consumption, one system at a time"
    Steam, Vapor & Hot-Water Heating Specialists
    Oil & Gas Burner Service
    Baltimore, MD (USA) and consulting anywhere.
    https://heatinghelp.com/find-a-contractor/detail/all-steamed-up-inc
    PC7060
  • Controlsgirl
    Controlsgirl Member Posts: 13
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    @KC_Jones a mix of issues. New boulder installed. 3 of the 4 radiators upstairs werent working bc I messed them up. New boiler...that and there are no traps. Thank god for the YouTube videos. 2 of the three radiators are now working and the 3rd one should be working tonight.
  • gerry gill
    gerry gill Member Posts: 3,078
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    Very cool indeed Gordo!!
    gwgillplumbingandheating.com
    Serving Cleveland's eastern suburbs from Cleveland Heights down to Cuyahoga Falls.

    PC7060Gordo
  • Controlsgirl
    Controlsgirl Member Posts: 13
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    I loved his videos on these! I was able to restore 10 valves of mine that were stuck and inoperable. And now I use them all of the time. I am still missing about 6 handles though! I need to make sure I have a rag or oven mitt without the handle. They get hott!
    Gordo
  • garfieldsimons
    garfieldsimons Member Posts: 14
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    They make a wax for casting that can be printed. No need to design a mold.
  • Gordo
    Gordo Member Posts: 857
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    @Controlsgirl : Please PM me.
    I should be able to have handles for you.
    All Steamed Up, Inc.
    "Reducing our country's energy consumption, one system at a time"
    Steam, Vapor & Hot-Water Heating Specialists
    Oil & Gas Burner Service
    Baltimore, MD (USA) and consulting anywhere.
    https://heatinghelp.com/find-a-contractor/detail/all-steamed-up-inc
  • PEvans
    PEvans Member Posts: 116
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    @Gordo what about other valve handles? I have the ones pictured below all over my house and I'm missing probably 2-3 handles. I don't know the manufacturer (maybe Watts?). Even though these are probably common valves, I have not found replacement handles anywhere!

  • fentonc
    fentonc Member Posts: 240
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    Odd brackets and handles really are where home 3D printing shines - I've made all kinds of random house widgets with mine (including a steam radiator valve handle at my previous house)
    Gordo
  • Gordo
    Gordo Member Posts: 857
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    @PEvans: Replacement radiator handles for the valves in your pictures are more or less available as after-market kits.
    They are generally made of phenolic resin with a stamped metal insert of various sizes to accommodate different size square stems.
    All Steamed Up, Inc.
    "Reducing our country's energy consumption, one system at a time"
    Steam, Vapor & Hot-Water Heating Specialists
    Oil & Gas Burner Service
    Baltimore, MD (USA) and consulting anywhere.
    https://heatinghelp.com/find-a-contractor/detail/all-steamed-up-inc
    mattmia2
  • SlowYourRoll
    SlowYourRoll Member Posts: 187
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    great work Gordo