The GRACO DBD911 is an air-operated double diaphragm pump designed for industrial fluid transfer. It features a stainless steel fluid section, aluminum center section, Buna-N (BN) seats, PTFE balls, and PTFE diaphragms. This pump is intended for reliable, high-flow transfer of a wide range of fluids in demanding environments.

Key Features:

• Air-Operated Double Diaphragm Pump
• Husky 1590, 1-1/2 in. (38.1 mm) BSP
• Stainless Steel (fluid section), Aluminum (center section), Buna-N (seats), PTFE (balls & diaphragms)
• 378.5 l/min (100 gpm)
• 120 psi (8.4 bar, 0.84 MPa)
• Compatible with a wide range of industrial fluids including water, wastewater, detergents, oils, and more
• ATEX certification required for certain applications
• High flow in a compact, portable size
• Lube-free operation
• Patented, high-reliability closed center air valve
• Online serviceable air valve
• Epoxy-coated air section for tough environments
• Suitable for handling solids up to 0.19 in (4.8 mm)
• Maximum operating temperature: 150°F (65.5°C)

Applications:
Industrial fluid transfer, including water and wastewater, detergents, oils, hydraulic fluids, cutting oils, and more. 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 connections
• Use appropriate thread sealant for BSP connections
• Check air supply for correct pressure and cleanliness
• Inspect diaphragms and seals before installation
• Follow manufacturer’s torque specifications for all fasteners
• Perform a test run to check for leaks and proper operation
• Regularly inspect diaphragms, balls, and seats for wear
• Keep air supply clean and dry
• Lubricate only if specified by manufacturer (this model is lube-free)
• Replace worn parts with genuine GRACO components
• Follow recommended maintenance intervals in the manual