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Can anyone tell me what this component is?

GREYNER
GREYNER Member Posts: 1
I have this valve (see attachment) on each zone of my 5 zone, hot water baseboard house heating system.

There is a gate valve which I assume purges the pipe, but I don't know what the small screwdriver control does. It seems to be multiturn. Is it some kind of flow control?

Thanks for any help

Comments

  • Terry O
    Terry O Member Posts: 67
    Sorry...

    No attachment.... try posting pics again.
    Terry O
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