... , CE, USDA, FDA 2.Non-Metallic Materials: Polypropylene, PVDF Pneumatic Diaphragm Pumps are ideally suited for highly corrosive fluids, intermittent/ondemand,portable ... , low abrasive fluids, and suspended solids. Standard duty non-metallic pumps are constructed in Polypropylene, PVDF, Conductive Acetal and Conductive Polypropylene ...