The GRACO D55A11 is a non-metallic, air-operated double diaphragm pump featuring a PVDF fluid section, polypropylene center section, PVDF seats, PTFE balls, and a PTFE diaphragm. It is designed for reliable, leak-free transfer of aggressive chemicals and fluids in industrial applications.

Key Features:

• Air-operated double diaphragm pump
• Husky 515, 1/2" NPT
• PVDF fluid section, polypropylene center section, PVDF seats, PTFE balls, PTFE diaphragm
• 15 gpm (57 lpm)
• 100 psi (7 bar, 0.7 MPa)
• Designed for use with aggressive chemicals and industrial fluids
• ATEX, CE
• Bolt-through fluid cover design for leak elimination and safety
• Stall-free, low pulsation air valve for smooth operation
• No mechanical seals to prevent fluid leaks or failures
• Runs quietly at less than 85 dBa
• Easy-to-service air valve and ball checks
• Split manifold option for pumping multiple fluids without mixing
• Operates on as little as 20 psi (1.4 bar, 0.14 MPa) air supply

Applications:
Ideal for transferring aggressive chemicals, acids, solvents, and other industrial fluids in manufacturing, chemical processing, and maintenance applications.

Installation Notes:

• Using genuine GRACO parts ensures optimal performance, safety, and compatibility with existing equipment.
• Ensure all connections are secure and use appropriate thread sealant for NPT ports
• Check air supply is clean and regulated to recommended pressure
• Install pump on a stable, level surface
• Follow manufacturer’s guidelines for priming and startup
• Regularly inspect and maintain ball checks and diaphragms for optimal performance