The GRACO DB5811 is a 1-1/2" NPT standard air-operated double diaphragm pump with a PVDF housing, aluminum center section, fluoroelastomer seats, PTFE balls, and PTFE diaphragm. It is designed for reliable transfer of corrosive, abrasive, or viscous fluids in industrial applications.

Key Features:

• Air-Operated Double Diaphragm Pump
• Husky 1590, 1-1/2" NPT
• PVDF housing, aluminum center section, fluoroelastomer 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
• Patented, high-reliability closed center air valve
• Online serviceable
• Epoxy-coated air motor for durability
• Handles solids up to 0.19 in (4.8 mm)
• Maximum suction lift: 20 ft (6.1 m) dry
• Maximum pump speed: 200 cpm
• Displacement per cycle: 0.5 gallon (1.96 liter)
• Maximum operating temperature: 150°F (65.5°C) for pump, higher for diaphragm materials

Applications:
Ideal for transferring corrosive, abrasive, or viscous fluids in industries such as chemical processing, mining, agriculture, and manufacturing. Suitable for applications requiring reliable, low-maintenance fluid transfer.

Installation Notes:

• Using genuine GRACO parts ensures optimal performance, reliability, and compatibility with existing equipment.
• Ensure all connections are secure and leak-free
• Follow manufacturer’s guidelines for air supply and fluid compatibility
• Regularly inspect diaphragms, seats, and balls for wear and replace as needed
• Use appropriate safety measures when handling corrosive or hazardous fluids
• Perform routine maintenance checks
• Keep spare diaphragms and seals on hand for quick replacement
• Consult the GRACO manual for specific installation and maintenance procedures