The GRACO 651039 is a stainless steel (SS) air-operated double diaphragm pump with a 1 inch (25.4 mm) BSPT connection, featuring an aluminum center section and FKM (Viton) seats, balls, and diaphragm. It is designed for reliable, leak-resistant transfer of a wide range of industrial fluids, including water, antifreeze, detergents, oils, and more, in demanding environments.

Key Features:

• Air-operated double diaphragm pump
• Husky 1050 SS, 1 in. (25.4 mm) BSPT
• Stainless steel (SS) fluid section, aluminum center section, FKM (Viton) seats, balls, and diaphragm
• Maximum flow rate: 50 gpm (189 lpm)
• Maximum fluid pressure: 125 psi (8.6 bar, 0.86 MPa)
• Compatible with water, antifreeze, detergents, motor oil, hydraulic fluid, cutting oil, and wastewater transfer
• Stall-free, low pulsation air valve for smooth and rapid changeover
• One-piece center section for leak resistance and reduced maintenance
• Handles solids up to 1/8 in. (3.2 mm) in size
• Maximum pump speed: 280 cpm
• Maximum suction lift: 16 ft (4.9 m) dry, 29 ft (8.8 m) wet

Applications:
Industrial fluid transfer, including water, antifreeze, detergents, oils, and wastewater; suitable for mining, agriculture, and other heavy-duty environments

Installation Notes:

• Using genuine GRACO parts ensures optimal performance, reliability, and compatibility with existing equipment.
• Ensure proper alignment and secure mounting of the pump
• Use appropriate thread sealant for BSPT connections
• Check air supply for correct pressure and cleanliness
• Inspect diaphragm and seals regularly for wear and replace as needed
• Follow manufacturer guidelines for maintenance intervals