The GRACO Husky 1590 DC4977 is a 1-1/2" NPT remote air-operated double diaphragm (AODD) pump with a stainless steel fluid section, aluminum center section, polypropylene seats, Buna-N balls, and Buna-N diaphragm. It is designed for reliable, robust fluid transfer in industrial applications, including handling a wide range of liquids such as chemicals, oils, and water.

Key Features:

• Air-Operated Double Diaphragm (AODD) Pump
• Husky 1590, 1-1/2" NPT
• Stainless steel fluid section, aluminum center section, polypropylene seats, Buna-N balls, Buna-N diaphragm
• 120 psi (8.4 bar, 0.84 MPa) maximum fluid working pressure
• Industrial fluids such as chemicals, oils, water, and wastewater; compatible with a wide range of liquids
• Patented high-reliability closed center air valve
• Online serviceable air valve
• Epoxy-coated air section for tough environments
• Remote operation capability
• Robust construction for demanding industrial use
• Ease of maintenance and repair

Applications:
Industrial fluid transfer, chemical processing, oil and lubricant handling, water and wastewater transfer, mining, agriculture, and other heavy-duty applications.

Installation Notes:

• Using genuine GRACO parts ensures optimal performance, reliability, and safety. Non-genuine parts may compromise pump integrity and void warranties.
• Ensure proper alignment and secure mounting of the pump
• Use appropriate piping and fittings for the intended fluid and pressure
• Check for leaks and proper air supply before operation
• Follow manufacturer’s guidelines for diaphragm and ball replacement
• Regularly inspect and maintain the air valve and diaphragms for wear
• Perform routine inspections of diaphragms, balls, and seats
• Replace worn or damaged components promptly
• Keep the air section clean and free of debris
• Use only recommended replacement parts