The GRACO DB3711 is an air-operated double diaphragm pump with an aluminum center section, designed for high-flow, reliable fluid transfer in industrial applications. It features Buna-N seats, PTFE balls, and a PTFE diaphragm, making it suitable for handling a wide range of chemicals and abrasive fluids.

Key Features:

• Air-Operated Double Diaphragm Pump
• Husky 1590, 1-1/2" NPT
• Aluminum center section, Buna-N seats, PTFE balls, PTFE diaphragm
• Maximum free flow delivery: 100 gpm (378.5 lpm)
• Maximum fluid working pressure: 120 psi (8.4 bar, 0.84 MPa)
• Compatible with a wide range of industrial fluids, including chemicals and abrasives
• Patented, high-reliability closed center air valve
• Epoxy-coated air section for tough environments
• Lube-free operation
• Easy-to-service air valve and ball checks
• Compact, portable size

Applications:
Ideal for industrial fluid transfer, chemical processing, mining, and agricultural applications where robust, reliable pumping is required.

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
• Check for leaks after installation
• Follow GRACO’s recommended maintenance schedule for air valve and diaphragm inspection
• Regularly inspect and replace diaphragms and seats as needed
• Keep air supply clean and dry to prevent valve issues
• Store pump in a clean, dry environment when not in use