The GRACO 654512 is a polypropylene (PP) air-operated double diaphragm pump designed for high-flow, reliable transfer of fluids, including aggressive chemicals. It features a PP center section, PP seats, PTFE balls, and a PO (polyolefin) diaphragm, making it suitable for demanding industrial applications where chemical compatibility and leak resistance are critical.

Key Features:

• Air-operated double diaphragm pump
• Husky 15120, 1-1/2 in. (38.1 mm) flange
• Polypropylene (PP) center section, PP seats, PTFE balls, PO diaphragm
• Up to 120 GPM (454 lpm)
• Up to 120–125 psi (8.4–8.6 bar, 0.84–0.86 MPa)
• Suitable for a wide range of chemicals, including ammonia (recommended configuration: PP pump with PP seats, PTFE balls & PTFE diaphragms)
• One-piece center section for leak elimination and reduced maintenance
• Stall-free, low pulsation air valve for smooth and rapid changeover
• Lube-free operation
• Up to 5 times longer diaphragm life compared to other air-operated diaphragm pumps
• Up to 40% more efficient than comparable pumps
• Compact, portable size
• Maximum solids size: 0.25 in.
• Maximum pump speed: 190 cpm
• Maximum operating temperature (PP): 150°F (66°C)

Applications:
Ideal for transferring aggressive chemicals, slurries, and viscous fluids in industrial, mining, and agricultural settings. Commonly used for ammonia, acids, and other corrosive liquids.

Installation Notes:

• Using genuine GRACO parts ensures optimal performance, reliability, and compatibility with existing equipment.
• Ensure all connections are secure and leak-free before operation
• Follow manufacturer guidelines for diaphragm and ball replacement
• Regularly inspect for wear and replace consumable parts as needed
• Use appropriate PPE when handling chemicals
• Consult the product manual for detailed installation and maintenance instructions
• Schedule routine maintenance to maximize pump life and efficiency
• Use only compatible replacement parts to avoid equipment damage