Metal Vs Polypropylene Suction Pump for Chemical Handling in Electroplating Tank. Made of high-quality polypropylene (PP), the siphon tank offers excellent resistance to many industrial acids, alkalis and corrosive liquids, making it suitable for demanding chemical applications. The tank helps support liquid priming and maintain a more stable suction condition before the pump, improving the reliability of the liquid transfer system. Suitable for installation with industrial chemical pumps and liquid transfer systems. The compact and practical structure makes installation and maintenance convenient.