A corrosion resistant plastic self-priming pump is a type of pump that is designed to handle liquids that may be corrosive or otherwise harmful to metal pumps. The pump is made of plastic materials that are resistant to corrosion, such as polypropylene (PP), PVC, PVDF, and PPH, among others. The self-priming feature allows the pump to start pumping liquid even when the suction line is not filled with liquid, this is done by creating a vacuum in the pump inlet, that allows the pump to start pumping even when the suction line is dry.
These types of pumps are often used in industrial and commercial applications, such as in chemical processing, pharmaceutical production, water treatment, and other environments where corrosion resistance is required. They can handle a wide variety of liquids, including acids, alkalis, and other chemicals. They are also suitable for use in high-temperature and high-pressure applications.
The corrosion-resistant plastic materials used in the construction of the pump make it resistant to corrosion and chemical attack, the self-priming feature makes the pump suitable for applications where the suction lift is not enough to start the pump, for example when the pump has to pull water from below the liquid level.