The GRACO D52966 is a non-metallic, air-operated double diaphragm pump designed for industrial fluid transfer. It features a polypropylene center section, polypropylene seats, Santoprene® balls, and Santoprene® diaphragm. This pump is intended for reliable, leak-free transfer of a wide range of fluids in demanding environments.

Key Features:

• Air-operated double diaphragm pump
• Husky 515, 1/2 in NPT
• Non-metallic bolted, polypropylene center section, polypropylene seats, Santoprene® balls and diaphragm
• Maximum flow rate: 15.0 gpm (56.7 lpm)
• Maximum pressure: 100 psi (0.7 MPa, 7 bar)
• Antifreeze, detergents, resin, polymers, motor oil, grease & oil, hydraulic fluid, transmission fluid, cutting oil, water, wastewater treatment, ink
• ATEX, CE
• 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 for pumping multiple fluids without mixing
• Operates on as little as 20 psi (1.4 bar, 0.14 MPa)
• Reliable air valve for years of dependable performance

Applications:
Industrial fluid transfer, including antifreeze, detergents, resins, polymers, motor oil, grease & oil, hydraulic fluid, transmission fluid, cutting oil, water, wastewater treatment, and ink

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 for proper grounding if required by local regulations or pump model
• Follow manufacturer’s instructions for air supply and pressure settings
• Regularly inspect and maintain air valve and ball checks for reliable operation
• Use split manifold option if transferring multiple fluids to prevent cross-contamination
• Periodically inspect diaphragms, balls, and seats for wear or damage
• Clean pump internals as recommended for the specific fluid being transferred
• Replace worn or damaged parts with genuine GRACO components