Can anodized aluminum pump heads be used in refrigeration systems that require fluid transfer?

Anodized aluminum pump heads can be used in refrigeration systems that require fluid transfer, but need to be carefully evaluated based on the type of refrigerant, temperature range, and usage environment. The surface treatment of anodized aluminum enhances the corrosion and wear resistance of aluminum to a certain extent. The oxide film can resist mild chemical media and corrosion in general working environments. Therefore, it can be applied in refrigeration systems in certain situations, especially when transporting non corrosive or low corrosive cooling liquids (such as water or certain types of environmentally friendly refrigerants).

The working environment and medium in refrigeration systems are diverse, especially when using certain special refrigerants such as ammonia, Freon, or other chemically strong fluids, the applicability of anodized aluminum pump heads may be limited. Freon refrigerants may affect the protective layer of the oxide film, especially in high-pressure or low-temperature environments, where the oxide film may corrode, leading to a decrease in the durability of the pump head. Ammonia refrigerants, due to their strong corrosiveness, have a more pronounced corrosive effect on aluminum. Long term contact may cause corrosion of the aluminum body, thereby affecting the service life and reliability of the pump head.

Under low temperature conditions, the oxide film of the anodized aluminum pump head may also become brittle due to temperature changes, leading to membrane rupture and affecting the performance of the pump head. In this case, it may be more appropriate to use other materials that are more resistant to low temperatures and corrosion, such as stainless steel or special alloys.