This Action Pump EZ-55 pump is a double action drum pump for fluid delivery on both up and down strokes. It is made of polypropylene and polyethylene for resistance to a wide range of acid, alkaline, caustic, and chlorine-based chemicals, oils, crop chemicals, diesel and liquid fertilizers. The design of the pumping mechanism eliminates the parts that wear for longer life of the unit. It has a high-volume delivery at low pressure for safety when pumping harsh chemicals. It has a 2" National Pipe Straight (NPS) adapter and a 2" buttress adapter. This hand pump is suitable for metering, plating, sanitary, chemical, and coolant applications, among others.