اللولب العلوي من De Dietrich 7769359

The upper volute is a critical housing component in centrifugal fans used in heating equipment. This part directs the airflow from the fan impeller into the ductwork or combustion chamber, playing a key role in system efficiency. As a spare part for boilers and burners, the upper volute must be precisely shaped to maintain aerodynamic performance. If your fan housing is cracked or corroded, replacing the upper volute can restore proper airflow and reduce noise. This component is typically matched to a specific fan model, so verify compatibility before purchase.