Non-Potable PVC Bushing?

Discussion in 'Pumps and Tanks Well Forum & Blog. Water is life.' started by rmgolob, Mar 5, 2021.

  1. rmgolob

    rmgolob Member

    Joined:
    Dec 16, 2016
    Location:
    Indiana
    Related to my thread with regards to installing a CSV, I want to put this bushing directly into the CSV outlet.
    (To create a plastic barrier between the stainless valve and the copper pipe and fittings)
    Why in the world would this bushing be listed as for Non-Potable water?

    Thanks
    upload_2021-3-5_18-55-28.png
     
  2. valveman

    valveman Cary Austin Staff Member

    Joined:
    Mar 15, 2006
    Occupation:
    Pump Controls Technician
    Location:
    Lubbock, Texas
    Because it cost the manufacturer many thousands of dollars a year to have each part tested and listed as NSF61G. PVC is PVC and not going to hurt you. Having to comply with NSF61G is just a political thing to make us pay 4-5 times more for the same products we have been using for generation. They made the laws where manufacturers are guilty until they pay enough money to prove they are innocent. Stupid laws like this are costing the average home owner for no good reason.
     
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  4. Sylvan

    Sylvan Still learning

    Joined:
    Sep 23, 2004
    Occupation:
    plumbing - fire suppression - boiler inspector
    Location:
    New York
    "Why in the world would this bushing be listed as for Non-Potable water?"

    Because PVC is known carcinogenic

    Unfortunately, most PVC is not rated for use for drinking water, not due to a high risk of toxicity, but due to the fact that it can degrade with high temperatures, UV light exposure, and extremely high pressures. Any degradation can damage the water supply and make it unsafe for drinking water


    https://www.ecowatch.com/why-you-should-avoid-pvc-products-1881927242.html


    https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3327051/
     
  5. rmgolob

    rmgolob Member

    Joined:
    Dec 16, 2016
    Location:
    Indiana
    Thanks. so I can put that in the outlet of my CSV and then a 3/4 elbow in the bushing?
     
  6. Reach4

    Reach4 Well-Known Member

    Joined:
    Sep 25, 2013
    Location:
    IL
    https://www.homedepot.com/p/Charlot...-FPT-Reducer-Bushing-PVC021080800HD/203811581 says conforms to NSF 61 and 14. And in fact, it says
    • White fittings that are used in potable water applications only

    https://www.supplyhouse.com/Spears-...le-80-Flush-Style-Reducer-Bushing-MIPT-x-FIPT is CPVC. The product overview says NSF approved.

    https://www.supplyhouse.com/Spears-439-131-1-x-3-4-PVC-SCH-40-M-x-F-Bushing
    https://www.cooneybrothers.com/2394544/p/n/spears-439-131 says that Spears 439-131 is NSF approved.

    There is some question/ambiguity about UPC and IPC codes allowing PVC indoors for pressurized potable water. Should be allowed for well-stuff IMO, but it is not bright-line clear.

    (Brass and stainless) and (brass and copper) are normally thought to not have galvanic corrosion problems.
     
    Sylvan likes this.
  7. valveman

    valveman Cary Austin Staff Member

    Joined:
    Mar 15, 2006
    Occupation:
    Pump Controls Technician
    Location:
    Lubbock, Texas
    PVC is still PVC no matter if the company paid to have it "certified" or not. There are lots of NSF ratings as well. NSF 372 just means no lead and NSF61 is different from NSF61G. You should be very afraid of all pipe and fittings unless you paid 4 times the cost to have the NSF61G sticker on it. Lol!
     
  8. wwhitney

    wwhitney Well-Known Member

    Joined:
    Mar 17, 2019
    Location:
    Berkeley, CA
    That may be true in practice, but is not a priori true.

    A plastic material is a complex mix of different ingredients, and we often refer to them just by the primary polymer (PVC in this case). There are lots of other additives to control various material properties. It's certainly possible that some of those additives may leach out into water and may be harmful.

    So having a certification that a particular plastic part doesn't use any of those additives makes sense to me.

    Cheers, Wayne
     
Similar Threads: Non-Potable Bushing
Forum Title Date
Pumps and Tanks Well Forum & Blog. Water is life. What makes a pump non-potable exactly? Jul 8, 2016
Pumps and Tanks Well Forum & Blog. Water is life. Galvanic corrosion with CSV / PVC bushing leaks Mar 8, 2021

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