Do Circulator Pumps Allow Flow When Turned Off?

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biggreen1
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Post Tue. Jul. 22, 2008 9:59 am

Do circulator pumps like a taco 007 act like flow checks when they are turned off, in either or both directions? I'm still pondering the plumbing of my remote boiler. Thank you

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Adamiscold
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Stove/Furnace Make: Chubby Sr. Old School
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Post Tue. Jul. 22, 2008 10:15 am

If I am following your question correctly, I know pumps like my Grundfos medium head stainless steel allow water under pressure to flow in either direction when it is turned off.
Adam

http://www.homepower.com <-- Great magazine.

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Yanche
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Stoker Coal Boiler: Alternate Heating Systems S-130
Coal Size/Type: Anthracite Pea
Location: Sykesville, Maryland

Post Tue. Jul. 22, 2008 10:59 am

Yes, gravity flow will occur. You need a weighted flow check on the pumps supply side and either a drop down piping loop or swing check on the return.
Yanche
Alternate Heating Systems S-130
Stoker Boiler burning Anthracite Pea Coal


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Sting
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Other Heating: OBSO Lennox Pulse "Air Scorcher" burning NG
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Post Tue. Jul. 22, 2008 11:06 am

http://www.taco-hvac.com/en/products/Mo ... ategory=53

You may wish to use the models with a -IFC suffix ---- with Flow control
When you turn your boiler on -Does it return the favor?
I have finally lost my mind. Don't bother to return it. It wasn't working properly anyway!

biggreen1
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Post Tue. Jul. 22, 2008 10:59 pm

Thank you for the replies. I didn't know about weighted and swing flow checks and its nice to know about the circ pumps with the flow check built right in. I'm ordering at least one of the commonly mentioned books tonight. This is a little more complex than I originally thought. Thanks

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