Expansion Tank vs Pressure Vessel - Don't Confuse Them! In MEP work, these two components can look similar, but they do very different jobs. Knowing the difference helps avoid system issues, pump damage, and commissioning problems. Expansion Tank Where it's used: Closed-loop systems Hot water circulation (calorifier) Chilled water systems What it does: Absorbs water expansion when temperature increases. Goal: Protect the system from pressure increases caused by heat. Pressure Vessel (Pressure Ta
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Expansion Tank vs Pressure Vessel - Don't Confuse Them! In MEP work, these two components can look similar, but they do very different jobs. Knowing the difference helps avoid system issues, pump damage, and commissioning problems. Expansion Tank Where it's used: Closed-loop systems Hot water circulation (calorifier) Chilled water systems What it does: Absorbs water expansion when temperature increases. Goal: Protect the system from pressure increases caused by heat. Pressure Vessel (Pressure Ta
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