The GRACO DB3377 is an air-operated double diaphragm pump with an aluminum center section, stainless steel seats, Buna-N balls, and Buna-N diaphragm. It is designed for high-flow, reliable transfer of fluids in industrial applications, including those requiring resistance to wear and chemical compatibility.

Key Features:

• Air-Operated Double Diaphragm Pump
• Husky 1590, 1-1/2" NPT
• Aluminum center section, stainless steel seats, Buna-N balls, Buna-N 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; suitable for use with fluids compatible with Buna-N and stainless steel
• Patented, high-reliability closed center air valve
• Online serviceable air valve and ball checks
• Epoxy-coated air section for tough environmental conditions
• Lube-free operation
• Compact, portable size for high flow applications
• Easy-to-service design for maintenance

Applications:
Ideal for industrial fluid transfer, including mining, agriculture, chemical processing, and general manufacturing 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 (1-1/2" NPT)
• Check for correct air supply and pressure settings before operation
• Inspect diaphragms and seats for wear or damage during installation
• Follow GRACO’s recommended maintenance schedule for best results
• Use appropriate safety measures when handling industrial fluids