The GRACO D52311 is an air-operated double diaphragm pump with a polypropylene (PP) center section, stainless steel (SS) seats, PTFE balls, and PTFE diaphragm. It is designed for reliable, leak-resistant transfer of a wide range of industrial fluids, including chemicals, oils, and water-based solutions, within GRACO equipment and compatible systems.

Key Features:

• Air-Operated Double Diaphragm Pump
• Husky 515, 1/2 in NPT
• Polypropylene (PP) center section, stainless steel (SS) seats, PTFE balls, PTFE diaphragm
• Maximum free flow delivery: 15 gpm (57 lpm)
• Maximum fluid working pressure: 100 psi (7 bar, 0.7 MPa)
• Antifreeze, detergents, resin, polymers, motor oil, grease & oil, hydraulic fluid, transmission fluid, cutting oil, water, wastewater treatment, ink
• Stall-free low pulsation air valve for smooth and rapid changeover
• Bolt-through fluid cover design for leak elimination and higher reliability
• Lightweight and robust construction for industrial environments
• Easy maintenance and replacement of components

Applications:
Industrial fluid transfer, chemical processing, lubrication systems, wastewater treatment, ink handling, and other applications requiring reliable, leak-resistant pumping of a wide range of fluids.

Installation Notes:

• Using genuine GRACO parts ensures optimal performance, safety, and compatibility with existing equipment. Non-genuine parts may compromise reliability and void warranties.
• Ensure all connections are tight and properly sealed to prevent leaks
• Verify compatibility of the pump with the intended fluid and operating conditions
• Follow manufacturer guidelines for air supply and pressure settings
• Regularly inspect and maintain diaphragms and seals for optimal performance