The GRACO DF4911 is a 2-inch air-operated double diaphragm (AODD) pump designed for fluid transfer applications. It features an aluminum (AL) center section, polypropylene (PP) seats, PTFE balls, and a PTFE diaphragm, making it suitable for handling a wide range of fluids in industrial environments.

Key Features:

• Air-Operated Double Diaphragm Pump (AODD)
• Husky 2150 SS, 2 in. (51 mm) NPT
• Aluminum center section, polypropylene seats, PTFE balls, PTFE diaphragm
• Up to 150 gpm (568 lpm)
• Maximum fluid working pressure: 120 psi (8.4 bar, 0.84 MPa)
• Compatible with a wide range of industrial fluids; suitable for use with various GRACO equipment and systems
• ATEX certified for hazardous environments (specific model dependent); see manual for details
• Stall-free, low pulsation air valve for smooth and rapid changeover
• Up to 40% more efficient than comparable pumps
• Up to 5 times longer diaphragm life
• Expanded material offering for diverse applications
• Fewer parts; externally accessible air valve for easy servicing
• Lube-free operation
• Epoxy-coated air section for tough environments

Applications:
Industrial fluid transfer, chemical processing, mining, agriculture, and other sectors requiring robust, reliable fluid handling

Installation Notes:

• Using genuine GRACO parts ensures optimal performance, safety, and longevity of the pump and connected equipment
• Ensure proper grounding (ground wire required)
• Use a bleed-type master air valve and air regulator
• Install air line filter and quick disconnect for air supply
• Include fluid drain and shutoff valves as required
• Follow all safety instructions in the manual
• Regularly inspect and maintain accessible air valve for easy servicing