The GRACO DF3777 is an air-operated double diaphragm pump designed for industrial fluid transfer. It features an aluminum center section and housing, with Buna (nitrile) seats, balls, and diaphragms, making it suitable for handling a wide range of fluids in demanding environments.

Key Features:

• Air-Operated Double Diaphragm Pump
• Husky 2150 AL, 2 in. (51 mm) NPT
• Aluminum center section and housing, Buna (nitrile) seats, balls, and diaphragms
• Up to 150 gpm (568 lpm)
• Up to 120 psi (8.4 bar, 0.84 MPa)
• Compatible with a wide range of industrial fluids, especially those suitable for Buna materials
• Stall-free low pulsation air valve for smooth and rapid changeover
• Improved efficiency (up to 40% more efficient than previous models)
• Long diaphragm life (up to 5 times longer than industry peers)
• Fewer parts for easier maintenance
• Externally accessible air valve for fast servicing without removing the pump
• Lube-free operation
• Epoxy-coated air section for tough environmental conditions

Applications:
Ideal for industrial fluid transfer in mining, agriculture, manufacturing, and other sectors requiring robust, reliable pumping solutions. Suitable for handling abrasive, viscous, or corrosive fluids compatible with Buna materials.

Installation Notes:

• Using genuine GRACO parts ensures optimal performance, reliability, and longevity of the pump. Non-genuine parts may compromise safety and efficiency.
• Ensure all connections are tight and leak-free before operation
• Verify compatibility of pumped fluid with Buna materials
• Follow GRACO’s recommended installation procedures for air and fluid lines
• Regularly inspect and maintain the pump according to the manufacturer’s guidelines
• Keep the air section clean and free from debris to maintain efficiency
• Use only genuine GRACO replacement parts for maintenance
• Monitor pump performance and address any unusual noise or vibration promptly
• Store spare diaphragms and seals in a cool, dry place