The GRACO DC4777 is a high-performance, air-operated double diaphragm pump featuring a stainless steel fluid section, aluminum center section, and Buna-N (nitrile) seats, balls, and diaphragm. It is designed for reliable, lube-free transfer of fluids in demanding industrial environments.

Key Features:

• Air-operated double diaphragm pump
• Husky 1590 (1-1/2" NPT)
• Stainless steel fluid section, aluminum center section, Buna-N seats, balls, and diaphragm
• 100 gpm (378.5 lpm)
• 120 psi (8.4 bar, 0.84 MPa)
• Compatible with a wide range of industrial fluids, including those requiring chemical resistance and durability
• High flow in a compact, portable size
• Lube-free operation
• Epoxy-coated air section for tough environmental conditions
• Easy-to-service air valve and ball checks
• Remote air valve option for flexible installation
• Reliable, high-duty cycle design

Applications:
Ideal for transferring fluids in industries such as mining, agriculture, chemical processing, and general industrial maintenance. Suitable for handling abrasive, viscous, or corrosive fluids where reliability and chemical resistance are required.

Installation Notes:

• Using genuine GRACO parts ensures optimal performance, reliability, and compatibility with existing equipment.
• Ensure proper alignment of inlet and outlet connections (1-1/2" NPT)
• Verify compatibility of fluid with Buna-N materials
• Follow manufacturer guidelines for air supply and pressure settings
• Regularly inspect and maintain air valve and ball checks for optimal performance
• Use appropriate mounting hardware and supports for secure installation