Results 1 to 8 of 8
  1. #1
    Jon mackay's Avatar
    Jon mackay Guest

    Default Bend radius for gas flex line

    Is there a specific bend radius for the yellow gas flex lines.
    The one in the picture is pulled real tight and I was going to recommend correction.

    Similar Threads:
    ***IMPORTANT*** You Need To Register To View Images ***IMPORTANT*** You Need To Register To View Images
    OREP Home Inspector E&O Insurance

  2. #2
    Join Date
    Mar 2007
    Location
    Ft. Myers, FL
    Posts
    363

    Default Re: Bend radius for gas flex line

    Sure looks wrong to me.


  3. #3
    Join Date
    Mar 2007
    Location
    Orlando, FL
    Posts
    1,280

    Default Re: Bend radius for gas flex line

    That looks like Tracpipe.

    Here is the Install guide for that product, lots of data here to review.

    http://www.omegaflex.com/trac/litlibrary/D&I_Guide.pdf

    The minimum radius is listed in the chart, along with other specs:

    ***IMPORTANT*** You Need To Register To View Images ***IMPORTANT*** You Need To Register To View Images

  4. #4
    Join Date
    Mar 2007
    Location
    Near Philly, Pa.
    Posts
    1,632

    Cool Re: Bend radius for gas flex line

    Ouch! Yes, way too tight of a radius. Always refer to the listed instructions and the Trac Pipe shown is made by Omegaflex, so that is the correct std.

    Rule of thumb for most brands of 1/2" CSST is the radius of a soft Philly pretzel. We sell calibrated pretzels up here. Also, calibrated golf balls as they are referred to on the tags on ANSI Z21.24 flexible appliance connectors.

    I would recommend this plumber remove the CSST fitting, install an ell to a sediment trap with a tee and the gas line coming off the snout of the tee horizontally. That creates a smooth, straight run for the gas line without bends and the trap to protect the appliance downstream. If this space is outside the thermal envelope, check with your AHJ on cold traps. Also, check the spacing on supports for this CSST. IF there was a union on that black iron of course, the simplest solution would be to rotate that ell to where the gas is going.

    Looks like a damp location. What's up with the welded wire and insulation? Rat farm?

    HTH

    Keep the fire in the fireplace.

  5. #5
    Join Date
    Oct 2003
    Location
    Rockwall Texas
    Posts
    4,517

    Default Re: Bend radius for gas flex line

    Jon,

    It looks as bad as this one. They were using it as a lighter for the firewood.

    ***IMPORTANT*** You Need To Register To View Images ***IMPORTANT*** You Need To Register To View Images
    Last edited by Rick Hurst; 05-09-2007 at 05:50 AM.

  6. #6
    Join Date
    Mar 2007
    Location
    Near Philly, Pa.
    Posts
    1,632

    Cool Re: Bend radius for gas flex line

    Rick, that is not CSST. That is a "flexible appliance connector" and IS listed for gas logs as long as you follow the rules. It is too long. However, log lighter pipes require a black iron pipe penetrating the firebox only--no CSST into log lighters. The black iron not only is more durable but is rigid and cannot be knocked around by logs the way a CSST line would.
    Two easy ways to differentiate CSST from flex connectors are the fixed flare nuts on the ends and either stamping on those nuts or in this case a sliding ID ring. Other ways include the shape of the corrugations, the depth of the corrugations, and the lack of markings stating listed to LC1 on the jacket or an EHD (equivalent hydraulic diameter). CSST is usually cut to fit versus standards lengths for flex connectors. CSST also has foot markings like a built in tape rule. CSST has its brand imprinted on the jacket.

    Is that a 3/8ths inch copper line I see bunched up behind the grate in this old Majestic Fp? Where does the gas line enter--through a knock out or just drilled through the sides of the box?

    HTH

    Keep the fire in the fireplace.

  7. #7
    Join Date
    Oct 2003
    Location
    Rockwall Texas
    Posts
    4,517

    Default Re: Bend radius for gas flex line

    Bob,

    You are correct. I had CSST on the mind from reading the prior post.

    Actually, it was aluminum entering through the firebox wall. No hard pipe was present.


  8. #8
    Join Date
    Mar 2007
    Location
    Near Philly, Pa.
    Posts
    1,632

    Cool Re: Bend radius for gas flex line

    Whoa! Aluminum tubing not allowed through the firebox wall!

    Keep the fire in the fireplace.

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •