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i have an old Hoffman number 15 vacuum valve leaking steam

PaulStraface_2
PaulStraface_2 Member Posts: 5
in Strictly Steam
what can i put in place having trouble finding replacement???

Comments

  • JUGHNE
    JUGHNE Member Posts: 11,254
    Is this a steam main vacuum/air vent?

    Do you still have a true vacuum system, or is this left over from coal burning and you now have a gas or oil burner?
    PaulStraface_2
  • Steamhead
    Steamhead Member Posts: 17,317
    This is probably mounted on a dry (overhead) return near a Differential Loop, on a Hoffman Vapor system. If there's steam in that dry return, one or more traps need to be repaired.

    For a replacement, I'd use one or more Gorton #2 vents.
    All Steamed Up, Inc.
    Towson, MD, USA
    Steam, Vapor & Hot-Water Heating Specialists
    Oil & Gas Burner Service
    Consulting
    PaulStraface_2
  • PaulStraface_2
    PaulStraface_2 Member Posts: 5
    thank you for the advise. yes it is on the dry return and it is not a vacuum system any more has a vapor stat running at 8 oz. We are replacing 7 bad traps as well. There was coal at one point because there was an old coal shoot in the basement but gas now.
  • Steamhead
    Steamhead Member Posts: 17,317
    Don't forget the "crossover" traps at the ends of the steam mains.
    All Steamed Up, Inc.
    Towson, MD, USA
    Steam, Vapor & Hot-Water Heating Specialists
    Oil & Gas Burner Service
    Consulting

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