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Amtrol's THERMAL EXPANSION ABSORBER, ST-12 / WXTP-18 is the perfect solution for controlling thermal expansion in closed loop hydronic systems. This product is designed to absorb the increased volume of water caused by thermal expansion and protect the system from pressure build-up. Here are some of the features of this product:
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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