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What is this Thrush component?

hot_rod
Member Posts: 16,304
Single pipe connect at bottom
Bob "hot rod" Rohr
trainer for Caleffi NA
Living the hydronic dream
trainer for Caleffi NA
Living the hydronic dream
0
Comments
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looks like an expansion tank0
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It does have an old steel compression/expansion tank above.Bob "hot rod" Rohr
trainer for Caleffi NA
Living the hydronic dream0 -
Maybe used to add more mass to the system like a reservoir tank.0
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@hot_rod where does the supply pipe come from on the boiler? I notice the circulators are pointing upwards, but I can't see how they get fed. Is that a bleeder facing us on the Thrush tank?0
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Good eye, Scott. It looks like the supply comes out of the boiler, goes into the Thrush device and the comes out the back to feed the circulators.
It's a pass-through expansion tank!Often wrong, never in doubt.0 -
I've seen pass through compression tanks like that which had baffles to separate the air, but if there's a tank above, I can't see what function that would have.
Maybe @DanHolohan would know?Bob Boan
You can choose to do what you want, but you cannot choose the consequences.0 -
Does it have a number on it?Bob Boan
You can choose to do what you want, but you cannot choose the consequences.0 -
I’ve seen those. Combo air separator/compression tank. A product that didn’t live up to its hype.Retired and loving it.0
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I am surprised the last installer reinstalled it... I was impressed with Thrush equipment , well made ...I have enough experience to know , that I dont know it all0
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