The GRACO DF3977 Husky 2150 is a 2-inch air-operated double diaphragm (AODD) pump with an aluminum center section, polypropylene seats, Buna-N balls, and Buna-N diaphragm. It is designed for robust fluid transfer applications in industrial settings, offering reliable performance and compatibility with a wide range of fluids.

Key Features:

• Air-Operated Double Diaphragm Pump
• Husky 2150, 2" NPT
• Aluminum center section, polypropylene seats, Buna-N balls, Buna-N diaphragm
• Up to 150 gpm (568 lpm)
• Maximum fluid working pressure: 120 psi (8.4 bar, 0.84 MPa)
• Compatible with a wide range of industrial fluids; not for use with incompatible chemicals (see manual for details)
• ATEX rated (dependent on model and configuration; see manual for specific certifications)
• Up to 5 times longer diaphragm life compared to other AODD pumps
• Expanded material offering for diverse applications
• Fewer parts than industry peers; air valve is externally accessible for easy servicing without uninstalling the pump
• 2" (51 mm) ANSI end-porting
• Lube-free operation
• Epoxy-coated air section for tough environmental conditions

Applications:
Industrial fluid transfer, chemical processing, mining, agriculture, and other demanding environments requiring reliable, robust pumping solutions.

Installation Notes:

• Using genuine GRACO parts ensures optimal performance, safety, and longevity of the pump.
• Ensure proper grounding (ground wire required)
• Use a bleed-type master air valve and air regulator for safe operation
• Install fluid drain and shutoff valves as recommended
• Follow all safety instructions in the manual
• Regularly inspect and maintain accessible air valve and diaphragms for extended service life