ZE10211 - Polypropylene Rotary Drum Pump for Petroleum Products & Solvents – 1 Gallon per 16 Revolutions is an accessory designed for dependable use with Goat Pumps fluid-transfer equipment and compatible setups. About This Item:. This two-vane rotary hand pump was built with professionals in mind and is constructed from polypropylene and fluorinated hydrocarbons, making this pump ideal for DEF, petroleum products, water-based chemicals, and chlorinated solvents. This pump dispenses at a rate of 1 gallon per 16 revolutions or 1 quart per 4 revolutions and includes a 1-inch hose barb spout.