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Rectorseal 8-way...cleans the pipes too?

I use Rectorseal 8-way in my 40 year old Peerless boiler. I add just enough to get the pH to about 10. My manual says the pH should be between 7.5 and 11. My boiler is squeaky clean and has zero rust or sludge.

I've always been curious. When steam is being made....do the chemicals in the 8-way make it up into the mains, runouts and radiators? Or is that purely distilled water (steam) that makes its way up there and drains back? Thanks!


  • EdTheHeaterMan
    EdTheHeaterMan Member Posts: 4,280
    No, I don't believe that the chemicals travel into the pipes in the steam... Is it possible the the inside of those pipes are STEAM CLEANED?
    Edward Young
    Retired HVAC Contractor from So. Jersey.
    Services first oil burner at age 16
    P/T trainer for EH-CC.org

  • ethicalpaul
    ethicalpaul Member Posts: 3,929
    I don't think they get carried into the pipes, but as you may know, I use the same product in the same way you describe and also find almost no rust after each year. I just drain off only about a pint of slightly brownish water every fall, then it runs pink/clear and that's it.

    I even run a cast iron pump for my radiant floor hot water loop with boiler water and it's been great. I have a screen in front of it that barely gets any rust.
    1 pipe Peerless 63-03L in Cedar Grove, NJ, coal > oil > NG