The GRACO D51331 is an air-operated double diaphragm pump featuring a polypropylene (PP) center section, stainless steel (SS) seats and balls, and a PTFE diaphragm. It is designed for reliable, low-pulsation fluid transfer in industrial applications, compatible with a wide range of chemicals and fluids.

Key Features:

• Pneumatic (air-operated) double diaphragm pump
• Husky 515 AC, 1/2 in NPT
• PP center section, SS seats and balls, PTFE diaphragm
• Up to 15 gpm (56.8 lpm)
• Maximum fluid pressure: 100 psi (7 bar, 0.7 MPa)
• Compatible with a wide range of chemicals and fluids; suitable for industrial environments
• ATEX, CE
• Stall-free, low-pulsation air valve for smooth and rapid changeover
• Rugged, heavy-duty construction for reliability
• Easy maintenance and serviceability
• Maximum pump speed: 400 cycles per minute
• Maximum suction lift: 15 ft (4.5 m) dry
• Maximum ambient operating temperature: 150°F (66°C) for PP center section

Applications:
Ideal for transferring chemicals, solvents, and other industrial fluids in environments requiring robust, reliable, and low-maintenance pumping solutions. Commonly used in manufacturing, chemical processing, and maintenance operations.

Installation Notes:

• Using genuine GRACO parts ensures optimal performance, safety, and longevity of the pump. Non-genuine parts may compromise reliability and void warranties.
• Ensure proper alignment and secure mounting of the pump
• Use appropriate fittings and hoses rated for the intended fluid and pressure
• Follow all local safety and environmental regulations
• Regularly inspect diaphragms, seats, and balls for wear and replace as needed
• Lubricate moving parts according to manufacturer recommendations