Welcome! Here are the website rules, as well as some tips for using this forum.
Need to contact us? Visit https://heatinghelp.com/contact-us/.
Click here to Find a Contractor in your area.
If our community has helped you, please consider making a contribution to support this website. Thanks!

316 L stainless venting

Options
Henry Nichols
Henry Nichols Member Posts: 14
in THE MAIN WALL
I was given a piece of info today that I need to have verified. I was told that GAMA pulled its rating on 316L stainless steel as a vent for category IV appliances. I went to the Protech site and read the AL29-4C blue paper on vent materials, page 6 being the operative chart.

I did not see any info on that site pertaining to the rating on 316L but if it is true, I need to know. Does anyone have any info with regard to this?

Thanks,
Henry

Comments

  • Bob Harper
    Bob Harper Member Posts: 1,143


    The alloy of steel isn't the issue: it is the vent or lining system and its listing. Any venting for Cat. IV must be listed to UL 1738. The only liner listed to 1738 is a new liner by Protech, which is 316Ti.Ordinary liners listed to UL1777 are not tested for positive flue gas pressure.
  • Henry Nichols
    Henry Nichols Member Posts: 14
    316

    is this posted somewhere and how did you find out about this? Secondly, will 316L make the cut and this is just a clerical issue or is 316L inferior? I read teh Allegheny Ludlum blue paper and it is specific in identifying the issues associated with other alloys.

    Will this be an issue for boilers?
This discussion has been closed.

Categories