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Firomatic Fusible Oil Valves

brentt Member Posts: 1
I am doing some research for a paper on oil heating. I live in Massachusetts where they use a thermal cut-off switch above the oil burner that will disconnect the power to the burner should the temperature reach 165 degrees. They also use an oil safety valve that stops the flow of oil should the same condition occur. I believe this is part of the Massachusetts code. Does anyone know if other states require the use of such devices?


  • Steve_152
    Steve_152 Member Posts: 26
    firematic valves

    in  Maine,  we  follow   NFPA  #31    closely... //    thermal  electric    firematic  above  burner   ///     firematic    oil   valves  at  the   oil tank,   &   at the burner..
  • meplumber
    meplumber Member Posts: 678
    As steve stated.

    I am in Maine as well. I think you will find that most all states that burn fuel oil follow NFPA #31 very closely. With some even more stringent than the NFPA guidance.
  • lchmb
    lchmb Member Posts: 2,997

    New Hampshire is on board with that ruling also..:)
  • billtwocase
    billtwocase Member Posts: 2,385
    It's been code

    for decades here in Mass
  • John Levey
    John Levey Member Posts: 34
    NFPA 31

    NFPA 31 requires thermally activated shutoff valves in 3 places:

    1 - at the tank

    2 - within 6" of the filter on the inlet side

    3 - within 12" of the inlet connection of the burner

    See the 2011 edition of NFPA 31 - 7.5.8 and 8.10.6.  Also, note that figures in 8.9.2 are not accurate and have been changed for the next edition.