ASIN B001BNPSFWImage via Amazon
Home Improvement
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Amtrol ST-12 Thermal Expansion Tank
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From the listing
Key features
01
Eliminates the waste of energy and water, thus saving money
02
Prevents the relief valve from going off
03
Protects the water heater and plumbing fixtures from premauture failure
04
Eliminates the waste of energy and water, thus saving money
05
Prevents a dangerous pressure build-up in the system

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Amtrol ST-12 Thermal Expansion Tank
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