The GRACO DB3777 is an air-operated double diaphragm pump featuring an aluminum center section and Buna-N (BN) seats, balls, and diaphragm. It is designed for industrial fluid transfer applications, offering robust performance and chemical compatibility for a wide range of liquids.

Key Features:

• Air-Operated Double Diaphragm Pump
• Husky 1590, 1-1/2 in. (38.1 mm) NPT
• Aluminum center section, Buna-N (BN) seats, balls, and diaphragm
• 100.0 gpm (gallons per minute)
• 120 psi (pounds per square inch)
• Industrial fluids such as detergents, motor oil, hydraulic fluid, cutting oil, water, and wastewater (compatible with a wide range of liquids, but always check chemical compatibility for specific applications)
• ATEX, CE
• Patented, high-reliability closed center air valve (online serviceable)
• Epoxy-coated air section for tough environmental conditions
• Robust aluminum construction for durability
• Buna-N (BN) elastomers for chemical resistance
• End port design for flexible installation

Applications:
Industrial fluid transfer, including handling detergents, motor oil, hydraulic fluid, cutting oil, water, and wastewater. Suitable for mining, agriculture, and other heavy-duty environments.

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 ports
• Use appropriate thread sealant for NPT connections
• Check for leaks after installation
• Follow manufacturer-recommended maintenance schedules
• Service air valve and diaphragm as needed for continued reliability