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Safe door on a gun room. Fireproofing?

Discussion in 'Shooting Gear and Storage' started by Derek Zeanah, Apr 3, 2013.

  1. Teachu2

    Teachu2 Well-Known Member

    Maybe I'm dense (probably!) but I'm having trouble figuring out the purpose of a backflow valve on a fire sprinkler system....
  2. Outlaw Man

    Outlaw Man Well-Known Member

    Teachu, one reason is to prevent the stagnant water that has been sitting in the pipes from flowing back into the drinking water.

    A back flow preventer is typically required by municipal codes.
  3. Teachu2

    Teachu2 Well-Known Member

    I told you I was dense!
  4. Outlaw Man

    Outlaw Man Well-Known Member

    Nah, it's notsomething you really think about. Had you said you didn't know why there was water in the pipe, I might be worried. :)
  5. guggep

    guggep Active Member

    A better way to go may actually be to not have water in the lines at all. Investigate a pre-action nitrogen charged system similar to what is used in computer rooms.

    As one can imagine computers & water are not friendly. Having a gas charged system ensures that when some electrician grabs and busts a pipe the computers dont get accidentally flooded.

    If there is a real fire the system triggers the valve that lets the water in the lines and you are good to go.

    Possible drawback is expense - I bet its $$$
  6. Reloadron

    Reloadron Well-Known Member

    Outlaw Man nailed it. Sprinkler systems result in dead heads. Water in those lines gets stagnant. When line pressure changes you don't want that water back flowing into your supply. That is also why I suggested a valve at the end of the line so the system can be easily flushed.

  7. idoono

    idoono Well-Known Member

    I can tell you from experience that a dry pipe system is a major maintenance headache. The valves that let the water overcome the air pressure require testing and maintenance on a regular basis. Plus you must maintain the source of your air or nitrogen charge. The new sprinklet heads do not just go off anymore. They activate only when they are exposed to the rated temperature.

  8. 4v50 Gary

    4v50 Gary Moderator Staff Member

    Sportsman Steel uses the Pentagon name because of its bad reputation.
  9. kentucky_Dave

    kentucky_Dave Well-Known Member

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