Expansion vessel with fixed membrane, for use in solar thermal systems. Steel body with external white paint. SBR rubber membrane. Internal anticorrosive treatment. Fluid inlet connection on the top, 3/4 "or 1" depending on the models. Temperature range -10 ÷ 110 ° C. Maximum working temperature 130 ° C (for a maximum of two hours). Pre-charge pressure 3 bar. Maximum operating pressure 8 or 10 bar (depending on the model).
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