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Mono Flow Tees

carl_15 Member Posts: 21
their should be an arrow indicating a supply direcrion and a return direction. the arrow pointing in the supply direction should be pointing TOWARD the risers.


  • Tony Massi
    Tony Massi Member Posts: 86
    Mono Flow tees

    I had a boiler installed and was wondering if the mono Flow tees were in the right direction.They are made of steel IPS and have two arrows One pointing right and one pointing left. The right one says Return and the Left says supply. Which one should be pointed to the header ( Circulator is pumping away). I have a radiator that is the opposite of this that won't get any heat.
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