The GRACO D55A16 is an air-operated double diaphragm pump designed for fluid transfer applications. It features a polypropylene (PP) center section, PVDF (polyvinylidene fluoride) seats, PTFE (polytetrafluoroethylene) balls, and a Santoprene (SP) diaphragm. This pump is engineered for reliable, chemical-resistant performance in demanding industrial environments.

Key Features:

• Air-Operated Double Diaphragm Pump
• Husky 515, 1/2 in NPT ports
• PP center section, PVDF seats, PTFE balls, SP diaphragm
• 15 gpm (57 lpm) maximum free flow delivery
• 100 psi (7 bar, 0.7 MPa) maximum fluid working pressure
• Designed for use with a wide range of industrial fluids, especially those requiring chemical resistance
• Chemical-resistant materials for durability
• Reliable air-operated design
• Easy maintenance and serviceability
• Handles solids up to 0.09 in (2.5 mm)
• Maximum pump speed: 400 cycles per minute
• Maximum suction lift: 15 ft (4.5 m) dry

Applications:
Ideal for transferring a variety of industrial fluids, including chemicals, solvents, and abrasive or viscous liquids, in industries such as mining, agriculture, manufacturing, and chemical processing.

Installation Notes:

• Using genuine GRACO parts ensures optimal performance, safety, and longevity of the pump. Non-genuine parts may compromise reliability and chemical resistance.
• Ensure all connections are tight and leak-free before operation
• Use appropriate thread sealant for NPT connections
• Check diaphragm and check valves regularly for wear or damage
• Follow manufacturer guidelines for air supply and pressure settings
• Inspect o-rings and seals during routine maintenance
• Regularly inspect and replace worn or damaged diaphragms, balls, and seats
• Keep air supply clean and dry to prevent contamination
• Monitor pump performance and address leaks or reduced flow promptly