The GRACO D55A88 is an air-operated double diaphragm pump designed for reliable fluid transfer in industrial applications. It features a polypropylene (PP) center section, PVDF (polyvinylidene fluoride) seats, FKM (fluoroelastomer) balls, and an FKM diaphragm, making it suitable for handling aggressive chemicals and solvents. This pump is intended for use in GRACO equipment for safe, leak-free transfer of fluids in demanding environments.

Key Features:

• Air-operated double diaphragm pump
• Husky 515, 1/2 inch (13 mm) NPT
• PP center section, PVDF seats, FKM balls, FKM diaphragm
• 57 L/min (15 gpm) maximum free flow delivery
• 100 psi (7 bar, 0.7 MPa) maximum fluid working pressure
• Compatible with a wide range of industrial fluids, especially aggressive chemicals and solvents
• Stall-free low pulsation air valve for smooth and rapid changeover
• Bolt-through fluid cover design eliminates leaks and enhances safety
• No mechanical seals to cause fluid leaks or failures
• Runs quietly at less than 85 dBa with remote muffler capability
• Easy-to-service air valve and ball checks
• Split manifold option available for pumping multiple fluids without mixing

Applications:
Used for transferring and evacuating fluids in industrial settings, including chemical processing, water treatment, mining, and agriculture. Suitable for handling aggressive chemicals, solvents, and slurries with solids up to 2.5 mm in size.

Installation Notes:

• Using genuine GRACO parts ensures optimal performance, reliability, and safety. Non-genuine parts may compromise pump integrity and void warranties.
• Ensure all connections are secure and properly torqued to prevent leaks
• Apply grease to lapped faces and bores as specified in the manual during assembly
• Install with clip ends of carriage plunger facing toward the center of the housing
• Follow all safety instructions and torque specifications provided in the manual
• Regularly inspect and maintain air valve and ball checks for optimal performance