The GRACO DB2977 Husky 1590 is a 1-1/2" NPT air-operated double diaphragm pump with a polypropylene body, aluminum center section, polypropylene seats, and Buna-N balls and diaphragm. It is designed for reliable, high-flow fluid transfer in industrial applications.

Key Features:

• Air-Operated Double Diaphragm Pump
• Husky 1590, 1-1/2" NPT
• Polypropylene body, aluminum center section, polypropylene seats, Buna-N balls, Buna-N diaphragm
• Maximum free flow delivery: 100 gpm (378.5 lpm)
• Maximum fluid working pressure: 120 psi (8.4 bar, 0.84 MPa)
• Industrial fluids such as water, wastewater, detergents, antifreeze, motor oil, hydraulic fluid, cutting oil, and more
• Lube-free operation
• Epoxy-coated air section for tough environmental conditions
• Easy-to-service air valve and ball checks
• Compact, portable size
• High reliability and durability

Applications:
Industrial fluid transfer, including water, wastewater, detergents, antifreeze, motor oil, hydraulic fluid, and cutting oil

Installation Notes:

• Using genuine GRACO parts ensures optimal performance, reliability, and safety of the pump system.
• Ensure proper alignment of inlet and outlet connections
• Follow manufacturer’s pressure relief procedures before servicing
• Use compatible fluids and avoid exceeding maximum pressure and temperature ratings
• Regularly inspect and maintain diaphragms, balls, and air valve for optimal performance