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The EXTROL EX-30 Expansion Tank is pre-pressurized and features a diaphragm design. For use in closed, non-potable, hydronic heating systems. Accepts expanded water as system temperature rises to reduce pressure build-up. Helps reduce energy consumption and reduces system wear. Features:<ul style="margin-top:0px;padding-top: 5px; padding-bottom: 5px;"><li>Factory pre-charge: 12 psig</li><li>Maximum working pressure: 100 psi</li><li>Maximum operating temperature: 240 degree F</li><li>Water tight reservoir for expanded water</li></ul>

Amtrol EXTROL&#174; Boiler System Expansion Tank EX-30, 4.4 Gallons

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