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  1. #1

    Default Drip leg required?

    Did an inspection of a 2001 standard tract home with two split systems: one in the attic, one in the basement. Both are natural gas. The one in the basement had a drip leg, but this one in the attic did not. Are drip legs required on attic systems?

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  2. #2
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    Default Re: Drip leg required?

    A drip leg is unlikely to be needed for the location shown, however it does need and required to have a sediment trap.

    ' correct a wise man and you gain a friend... correct a fool and he'll bloody your nose'.

  3. #3

    Default Re: Drip leg required?

    What's the difference between a drip leg and a sediment trap?

    Welmoed Sisson
    Inspections by Bob, LLC, Boyds, MD
    "Given sufficient thrust, pigs fly just fine."

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    Default Re: Drip leg required?

    Quote Originally Posted by Welmoed Sisson View Post
    What's the difference between a drip leg and a sediment trap?
    Drip legs and sediment traps look the same, and are very often confused.

    Sediment traps are required before an appliance.
    Sediment traps collect dirt, rust, and other debris in the gas line before it gets to the control valve of an appliance.

    Drips legs are used to collect water droplets.
    They are located in low areas of a gas line.
    Drip legs are only needed if the gas is wet.
    Most gas is dry, therefore drip legs are not often required.

    ' correct a wise man and you gain a friend... correct a fool and he'll bloody your nose'.

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    Red face Re: Drip leg required?

    Quote Originally Posted by Raymond Wand View Post
    I asked a heating guy that was servicing my furnace the same thing. His answewr was if one is on the second level they don't consider the drip leg necessary because any moisture on the higher floor will drain down to the lowest level. As long as there is one below is all he felt is required.


  7. #7
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    Default Re: Drip leg required?

    I had an inspection a new Condo community a few years back. I went outside to the water heater closet off the balcony and noticed there wasn't a sediment trap installed on the gas water heater. The installation manual was right there on the water heater document pouch. I open it up and looked up the supply piping section. It clearly stated that "a sediment trap SHALL be installed as closed as possible to the control valve". I took a picture and included it in the report.

    I write it up a a repair if it's not there. I DO NOT reference a code.

    The above statements are expressed solely as my opinion and in all probability will conflict with someone else's.
    Stu, Fredericksburg VA

  8. #8
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    Default Re: Drip leg required?

    You could just call it a "Dirt leg" and cover both bases.

    John Kogel, RHI, BC HI Lic #47455
    www.allsafehome.ca

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    Default Re: Drip leg required?

    Quote Originally Posted by John Kogel View Post
    You could just call it a "Dirt leg" and cover both bases.
    Close, but no cigar.

    While the sediment trap 'could' be called a "Dirt leg" because it does collect debris, the the drip leg collects water which condenses within the piping ... yeah, yeah, I know, that water is 'dirty water' ... not to be confused with The Standells Dirty Water - YouTube

    Jerry Peck, Construction / Litigation Consultant
    Construction Litigation Consultants, LLC ( www.ConstructionLitigationConsultants.com )
    www.AskCodeMan.com

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