Graco D42911 Air Operated Double Diaphragm Pump

The Graco Husky D42911 is an air-operated double diaphragm (AODD) pump powered by compressed air, designed for reliable fluid transfer in industrial environments where electric motors are impractical or hazardous. It handles a broad fluid spectrum—chemicals, oils, water, solvents, and slurries—and includes self-priming and dry-run capabilities, enabling continuous operation and quick response in processing lines, chemical handling, and waste-transfer setups. The pump supports fixed or portable mounting within industrial process systems, and its construction is an industrial-duty fluid handling assembly built to withstand demanding conditions in chemical processing plants, water treatment facilities, mining, and paint and coating operations. Part of Graco’s Husky series (Model D42911), this AODD pump is commonly specified for fluid transfer, circulation, and general pumping duties in automation environments requiring a robust, air-powered solution. Common replacements include Graco Husky 515 Diaphragm Pump and Graco Husky 716 Diaphragm Pump.