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Taco ccirculator with 3 ports

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steamfitter
steamfitter Member Posts: 156
in THE MAIN WALL
Having trouble saving and copying a picture sent to me of a Taco circulator.

It must be pretty old because I called Taco and they said the Taco 005- bf1-2w is a regular diaphragm hw circulator.

However the photo shows 1/2" piping attached to 3 ports, all at 90 degree angles tp each other. There is not a straight thru suction and discharge. Very strange???

It's on a Weil Mclain boiler.
Just curious about how this works. Is a built-in bypass? One of the ips connections is part of a 2-bolt flange on the circulator.

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