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Hydronic boiler controls
GeoKnight
Member Posts: 6
Hey guys I wanted to know what this component is on this Weil-McClain 140000btu hydronic boiler. This piece is where I believe an air separator should have been because the system doesn’t have one. Instead this is about 20”
downstream of the expansion tank on the supply piping. I’ll also add a few pics of the boiler/piping itself.
downstream of the expansion tank on the supply piping. I’ll also add a few pics of the boiler/piping itself.
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Comments
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That is a swing check valve. A flapper inside slides down when the circulator stops tom prevent unwanted flowBob "hot rod" Rohr
trainer for Caleffi NA
Living the hydronic dream0 -
Flow check valve
And if you only have one zone and no domestic hot water from the boiler you don't need it
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is that expansion tank supported?
or just dangling at the top of the 1/2 inch copper?
please support meknown to beat dead horses
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So it has about 5 baseboards with no zoning they all branch from the main poorly insulated pipe you see with no domestic water zoning. So I suppose I can put an air separator in place of that?EBEBRATT-Ed said:Flow check valve
And if you only have one zone and no domestic hot water from the boiler you don't need it
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Maybe they had domestic hot water off the original boiler but with only one zone and no DHW off the boiler you don't need it0
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