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have you ever seen one of these?

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I ran into a "Flow Stat, #400" manufactured in Brooklyn, N.Y. I've never seen one and wonder if anyone can tell me more about it and it's function/operating features. It was originally installed sometime in the early sixties. A Taco 571 valve, with t'stat, is immediately downstream from it, but don't know if they are competing with each other (the taco could have been a later add-on). thanks

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  • STEVEusaPA
    STEVEusaPA Member Posts: 6,505
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    Do you have a pic. Sounds like a check valve.

    There was an error rendering this rich post.

  • pardon_my_ignorance
    pardon_my_ignorance Member Posts: 18
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    i do have 2 pics, if i can figure out how to send them to you
  • Ironman
    Ironman Member Posts: 7,378
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    i do have 2 pics, if i can figure out how to send them to you

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  • pardon_my_ignorance
    pardon_my_ignorance Member Posts: 18
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    here is a 2 picture file. thanks for your input