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Where do you install your boiler fill valves?

I am trying to learn where your boiler fill valve is generally installed on the system? Thank you for your input


  • CMadatMe
    CMadatMe Member Posts: 3,086
    At the Point

    Of no pressure change. If you want to learn Dan has a nice book called "Pumping Away" that you can purchase right here on his site.

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  • David Sutton_6
    David Sutton_6 Member Posts: 1,079
    Fill valves

    The best place to locate your fill valve is between your extrol tank and your tie in point just put in a 1/2 tee and add your fill there, its known as the point of no presure change, see the picture below look at the tank and right above it is the point,

  • cwilliams2000
    cwilliams2000 Member Posts: 140
    thank you

    thank you, that pic is great, I think I will end up doing exactly the same thing and be done with the issue. Two side notes, I like Dr Pepper too! :)

    Also why does it look like I dont see the drain flow line coming out of the backflow preventer?
  • R Mannino
    R Mannino Member Posts: 441
    I See

    the Dr. Pepper, but I can't see the Maxwell House. I'm a Smithwick's guy, it's OK I was in the garage at home.

  • Devan
    Devan Member Posts: 138
    where if

    you are using a low loss header?
  • David Sutton_6
    David Sutton_6 Member Posts: 1,079
    The jobs not done yet

  • Ron Jr._3
    Ron Jr._3 Member Posts: 603
    We normally

    pipe the feed into boiler return pipe . You can purge the zones with hot water and know they're all done easier . And if you're closing the PRV down after purging ( with a LWCO ) , the placement of the valve is not critical .
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