The GRACO DC2977 is an air-operated double diaphragm pump designed for high-flow, heavy-duty fluid transfer applications. It features a polypropylene body, aluminum center section, polypropylene seats, Buna-N balls, and Buna-N diaphragm. This pump is engineered for reliability and ease of maintenance, suitable for handling a wide range of industrial fluids.

Key Features:

• Air-operated double diaphragm pump
• Husky 1590, 1-1/2" NPT
• Polypropylene body, aluminum center section, polypropylene seats, Buna-N balls, Buna-N diaphragm
• Maximum flow rate: 100 gpm (378.5 lpm)
• Maximum discharge pressure: 120 psi (8.4 bar, 0.84 MPa)
• Compatible with a wide range of industrial fluids; suitable for remote air valve operation
• Patented, high-reliability closed center air valve (online serviceable)
• Epoxy-coated air section for tough environmental conditions
• Lube-free operation
• Externally accessible air valve for quick, easy maintenance without uninstalling the pump
• Up to 5 times longer diaphragm life compared to other air-operated diaphragm pumps in its class
• Available in multiple materials for diverse applications

Applications:
Ideal for transferring abrasive, viscous, or corrosive fluids in industries such as mining, agriculture, chemical processing, and general industrial maintenance. Suitable for applications requiring high flow rates and robust construction.

Installation Notes:

• Using genuine GRACO parts ensures optimal performance, reliability, and longevity of the pump. Non-genuine parts may compromise safety and efficiency.
• Ensure correct alignment of inlet and outlet connections (1-1/2" NPT or BSP or ANSI-flange)
• Verify compatibility of fluid with pump materials (polypropylene, Buna-N, aluminum)
• Install in a location that allows easy access for maintenance and inspection
• Follow manufacturer guidelines for air supply and pressure settings
• Regularly inspect and maintain the air valve, diaphragm, and ball checks for optimal performance