The GRACO DF4777 is a stainless steel air-operated double diaphragm pump, designed for robust and reliable fluid transfer in demanding industrial environments. It is intended for use in applications requiring smooth, low-pulsation flow and resistance to corrosive or abrasive fluids.

Key Features:

• Air-operated double diaphragm pump
• Husky 2150, 2" (51 mm) NPT
• Stainless steel (SS) with aluminum center section
• Up to 150 gpm (568 lpm)
• 120 psi (8.4 bar, 0.84 MPa)
• Designed for use with a wide range of fluids, including corrosive and abrasive liquids
• Stall-free low pulsation air valve for smooth and rapid changeover
• Fewer parts for easier maintenance and increased reliability
• Lube-free operation
• Epoxy-coated exterior for enhanced durability

Applications:
Suitable for industrial fluid transfer, including chemical processing, mining, agriculture, and other environments requiring robust, reliable pumping solutions.

Installation Notes:

• Using genuine GRACO parts ensures optimal performance, reliability, and safety. Non-genuine parts may compromise pump efficiency and longevity.
• Ensure proper alignment of inlet and outlet connections
• Use appropriate thread sealant for NPT connections
• Follow manufacturer guidelines for air supply and pressure settings
• Regularly inspect diaphragms and valves for wear and replace as needed