The GRACO DBD311 is a stainless steel air-operated double diaphragm pump designed for high-flow industrial fluid transfer applications. It is robust, portable, and suitable for handling a wide range of fluids, including those with small solids.

Key Features:

• Air-Operated Double Diaphragm Pump
• Husky 1590, 1.5" (38.1 mm) porting
• Stainless Steel (fluid section), Aluminum (center section), PTFE (diaphragms, balls, manifold O-rings), Buna seals
• 100 gpm (378.5 lpm)
• 120 psi (8.4 bar, 0.84 MPa)
• Industrial fluids, including those with solids up to 0.19 in (4.8 mm)
• ATEX, CE
• Patented, high-reliability closed center air valve
• Online serviceable
• Epoxy-coated air section for tough environments
• Lube-free operation
• Compact and portable
• High flow in a small footprint

Applications:
Industrial fluid transfer, chemical processing, mining, agriculture, and other sectors requiring robust, high-flow pumping solutions.

Installation Notes:

• Ensures optimal performance, reliability, and safety; maintains warranty and certification compliance.
• Ensure correct alignment of inlet and outlet ports
• Use appropriate thread sealant for NPT or BSP connections
• Check air supply for proper pressure and cleanliness
• Inspect diaphragms and seals regularly for wear
• Follow manufacturer’s torque specifications for assembly
• Regularly inspect and replace diaphragms and seals as needed
• Keep air supply clean and dry
• Monitor for leaks and unusual noise
• Service air valve as recommended