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Flow Control

Ted_4
Ted_4 Member Posts: 92
in THE MAIN WALL
Can anyone tell me anything about a Thrush No. 115 Flow Control Valve?

Comments

  • Steamhead
    Steamhead Member Posts: 17,387
    Flow-Control Valves

    also known as Flow-Checks (Taco's version) keep water in a hot-water heating loop from circulating by gravity. This lets the boiler heat up (as for a tankless coil, indirect heater or another zone) without the heat going where it isn't needed.

    It also keeps the water from moving backwards when another zone calls for heat.

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  • Ted_4
    Ted_4 Member Posts: 92


    No. I mean specifically the no. 115. I found it on top of an ancient Delco Appliance boiler. It doesn't look anything like a modern day fcv, has a tapping for the expansion tank and a couple of other mysterious protuberances on the sides. Perhaps one of these unloads the check for gravity flow? Anyway, if anyone has seen anything like this old guy, let me know what you know.
  • Robert O'Connor_4
    Robert O'Connor_4 Member Posts: 88
    Some Thrush

    have a lever on the side which you can move to manually open.

    Regards,

    Robert
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