The GRACO DB4911 is a stainless steel (SS) air-operated double diaphragm (AODD) pump with a 1-1/2 in. (38.1 mm) NPT standard connection, featuring an aluminum center section, polypropylene (PP) seats, PTFE balls, and a PTFE diaphragm. It is designed for reliable fluid transfer in demanding industrial environments.

Key Features:

• Air-Operated Double Diaphragm (AODD) Pump
• Husky 1590, 1-1/2 in. (38.1 mm) NPT
• Stainless steel (SS) wetted parts, aluminum center section, PP 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 corrosive and abrasive liquids
• Up to 5 times longer diaphragm life compared to other AODD pumps in its class
• Expanded material offering for handling diverse applications
• Fewer parts than industry peers; air valve is externally accessible for quick servicing without uninstalling the pump
• Robust construction for demanding environments

Applications:
Ideal for fluid transfer in industries such as mining, agriculture, chemical processing, and general industrial maintenance. Suitable for handling corrosive, abrasive, or viscous fluids.

Installation Notes:

• Using genuine GRACO parts ensures optimal performance, reliability, and safety. Non-genuine parts may compromise pump efficiency and longevity.
• Ensure proper grounding as per GRACO instructions
• Use recommended hoses and fittings for fluid and air supply
• Install a bleed-type master air valve and air regulator for safe operation
• Regularly inspect and maintain diaphragms, balls, and seats for wear
• Follow all safety instructions in the GRACO manual