The GRACO D52977 is a non-metallic, bolted, air-operated double diaphragm pump designed for reliable transfer of fluids in industrial applications. It features a polypropylene (PP) center section and seats, with Buna-N (BN) balls and diaphragms, making it suitable for handling a wide range of chemicals and fluids. The pump is intended for use in GRACO Husky 515 series equipment for safe, leak-free fluid transfer.

Key Features:

• Non-Metallic Bolted Air-Operated Double Diaphragm Pump
• Husky 515, 1/2 in NPT
• Polypropylene (PP) center section and seats, Buna-N (BN) balls and diaphragms, PTFE O-rings
• 15.0 gpm
• 100 psi maximum
• Designed for use with GRACO Husky 515 series pumps
• ATEX, CE
• Stall-free low pulsation air valve for smooth operation
• Bolt-through fluid cover design eliminates leaks
• No mechanical seals to cause fluid leaks or failures
• Runs quietly at less than 85 dBa
• Easy-to-service air valve and ball checks
• Operates on as little as 20 psi
• Split manifold option for pumping multiple fluids without mixing
• Fully-groundable acetal model available
• Reliable air valve for years of dependable performance

Applications:
Ideal for transferring chemicals, solvents, paints, and other industrial fluids in environments requiring leak-free, reliable, and easy-to-maintain pumping solutions. Suitable for mining, agriculture, manufacturing, and other industries.

Installation Notes:

• Using genuine GRACO parts ensures optimal performance, safety, and compatibility with Husky 515 series pumps.
• Ensure all connections are tight and leak-free before operation
• Use appropriate thread sealant for NPT connections
• Follow manufacturer guidelines for air supply and pressure settings
• Regularly inspect diaphragms, balls, and O-rings for wear and replace as needed
• Consult the manual for specific installation and maintenance procedures