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What Is This?

RidgeReaper56
Member Posts: 11
Hello All,
This photo shows a dead end copper coil. The coil has male pipe threads and is threaded into a tee. The other end of the coil is crimped/flattened. This is in a hot water baseboard system. Never seen a coil like this, so I was wondering if anyone has come across one and what it's purpose is.

This photo shows a dead end copper coil. The coil has male pipe threads and is threaded into a tee. The other end of the coil is crimped/flattened. This is in a hot water baseboard system. Never seen a coil like this, so I was wondering if anyone has come across one and what it's purpose is.

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Comments
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It’s like a shock absorber on older hot water systems eliminates thermal hammer while hot water travels through pipes displacing colder room temperature water, most times you would see them installed on a tankless coil for domestic hot water on older conversion burners, didn’t usually see them on baseboard lines maybe they had a lot of banging and installed coil to eliminate it.1
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Are you sure that that is not a domestic water line0
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I have to see how it’s connected.0
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Thank you everyone for your input and helping me solve this.0
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