The GRACO 654503 is a Husky 15120 air-operated double diaphragm pump assembly featuring a polypropylene center flange, polypropylene center section, polypropylene seats, FKM (Viton) balls, and a PTFE overmolded diaphragm. It is designed for heavy-duty fluid transfer applications, including handling high-viscosity and corrosive materials, and is intended for use in industrial environments where chemical resistance and reliability are critical.

Key Features:

• Air-operated double diaphragm pump
• Husky 15120, 1.5 inch (38.1 mm) port size
• Polypropylene center flange, center section, and seats; FKM (Viton) balls; PTFE overmolded diaphragm
• Up to 120 gpm (454 lpm)
• Maximum working pressure: 125 psi (8.6 bar, 0.86 MPa)
• Designed for use with Husky 15120 series pumps and compatible with a wide range of industrial fluids
• Stall-free low pulsation air valve for smooth and rapid changeover
• One-piece center section eliminates leaks and reduces maintenance
• Up to 40% more efficient than comparable pumps
• Highest fluid flow rate in its class
• Up to 5 times longer diaphragm life compared to other air-operated diaphragm pumps
• Lube-free operation
• Available in polypropylene and PVDF for expanded material compatibility

Applications:
Industrial fluid transfer, including high-viscosity and corrosive materials; suitable for chemical, mining, agricultural, and general industrial applications

Installation Notes:

• Using genuine GRACO parts ensures optimal performance, reliability, and longevity of the pump. Non-genuine parts may compromise safety and efficiency.
• Follow all safety instructions and warnings in the GRACO Husky 15120 manual
• Ensure proper alignment and secure fastening of all components
• Regularly inspect and maintain diaphragms, seats, and balls for wear and chemical compatibility
• Use only compatible fluids as specified in the manual
• Consult a GRACO specialist for installation and maintenance best practices