The GRACO D52911 is a non-metallic, air-operated double diaphragm pump with a polypropylene (PP) center section, polypropylene seats, PTFE balls, and PTFE diaphragm. It is designed for reliable, leak-free fluid transfer of a wide range of chemicals and liquids in industrial and maintenance applications.

Key Features:

• Air-Operated Double Diaphragm Pump
• Husky 515, 1/2 in NPT
• Non-metallic bolted, polypropylene center section, polypropylene seats, PTFE balls, PTFE diaphragm
• 15 gpm (57 lpm)
• 100 psi (7 bar, 0.7 MPa)
• Compatible with a wide range of fluids including antifreeze, detergents, resins, polymers, motor oil, grease & oil, hydraulic fluid, transmission fluid, cutting oil, water, and wastewater treatment
• ATEX, CE
• Stall-free low pulsation air valve for smooth and rapid changeovers
• Bolt-through fluid cover to eliminate leaks and increase reliability
• Easy-to-service air valve and ball checks
• Reliable, leak-free operation
• Suitable for handling solids up to 3/32 in (2.5 mm) diameter

Applications:
Ideal for fluid transfer in industrial, maintenance, and lubrication applications, including mining, agriculture, and manufacturing. Suitable for handling a variety of chemicals and liquids.

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 tight and leak-free before operation
• Use compatible fittings and hoses rated for the intended fluid and pressure
• Follow manufacturer guidelines for air supply and fluid compatibility
• Regularly inspect and maintain diaphragms, balls, and seals for wear and tear
• Refer to the GRACO manual for specific installation and maintenance procedures