The GRACO 651163 is a 1-inch (25.4 mm) NPT air-operated double diaphragm pump with a polypropylene (PP) center section, stainless steel (SS) seats, PTFE balls, and PTFE overmolded (PO) diaphragms. It is designed for reliable, low-maintenance transfer of a wide range of industrial fluids within GRACO equipment.

Key Features:

• Air-Operated Double Diaphragm Pump
• Husky 1050, 1 in. (25.4 mm) NPT
• PP Center Section, SS Seats, PTFE Balls, PTFE Overmolded Diaphragms
• 50 gpm (189 lpm)
• Maximum fluid working pressure: 125 psi (8.6 bar, 0.86 MPa)
• Compatible with a wide range of industrial fluids including water, wastewater, oils, and chemicals
• UL listed (for some configurations; check specific model for details)
• Stall-free, low pulsation air valve for smooth and rapid changeover
• One-piece center section reduces leaks and maintenance
• Robust construction for high reliability and long service life
• Easy to maintain and service

Applications:
Ideal for transferring water, wastewater, oils, chemicals, and other industrial fluids in mining, agriculture, manufacturing, and maintenance environments.

Installation Notes:

• Using genuine GRACO parts ensures optimal performance, reliability, and safety, and maintains warranty coverage.
• Ensure all connections are tight and leak-free
• Use compatible thread sealant for NPT connections
• Follow recommended air supply and pressure guidelines
• Inspect diaphragms and balls regularly for wear and replace as needed
• Refer to the manual for specific installation and maintenance procedures