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McDonnell Miller 67 Blow-down valve Handle??

jpf321jpf321 Member Posts: 1,565
Does anyone in NYC have (that I can pick-up) or anyone else know, where to find a blow-down valve handle for an MM67 LWCO? Perhaps someone recently replaced a boiler and has a handle from an old unit?

1-pipe Homeowner - Queens, NYC

NEW: SlantFin Intrepid TR-30 + Tankless + Riello 40-F5 @ 0.85gph | OLD: Fitzgibbons 402 boiler + Beckett "SR" Oil Gun @ 1.75gph

installed: 0-20oz/si gauge | vaporstat | hour-meter | gortons on all rads | 1pc G#2 + 1pc G#1 on each of 2 mains

Connected EDR load: 371 sf venting load: 2.95cfm vent capacity: 4.62cfm
my NEW system pics | my OLD system pics


  • FredFred Member Posts: 8,440
    They are available everywhere. Check ebay and
  • EBEBRATT-EdEBEBRATT-Ed Member Posts: 7,315
    Not sure if you can by the handle separately. You may have to replace the whole thing
  • FredFred Member Posts: 8,440

    Not sure if you can by the handle separately. You may have to replace the whole thing

    They do sell the parts and handles separately.
  • EBEBRATT-EdEBEBRATT-Ed Member Posts: 7,315
    good to know @Fred
  • JohnNYJohnNY Member Posts: 2,496
    It's McDonell-Miller part number 310447 and you can buy it at Pronto Gas Heating Supplies at 181 Chrystie St.
    Tell Tito I said hello.
    For troubleshooting and private consulting services, find John "JohnNY" Cataneo here at :
    "72°F Mechanical, LLC"
    Or email John at [email protected]
    John is the Boilers and Hydronic Heating Systems Course Instructor at NYC's Mechanics Institute, a professional Master Plumber, licensed by The Department of Buildings of The City of New York, and works extensively in NYC while consulting for clients in and out of state.
    For residential service and installations in New Jersey, please see Toro Plumbing & Mechanical and fill out our contacts page, upload pics, and submit, or call (973-672-1000).
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