The GRACO DF3955 is an air-operated double diaphragm pump with an aluminum center section, polypropylene seats, TPE balls, and TPE diaphragm. It is designed for reliable fluid transfer in industrial applications, offering robust construction and compatibility with a wide range of fluids.

Key Features:

• Air-Operated Double Diaphragm Pump
• Husky 2150, 2" NPT
• Aluminum center section, polypropylene seats, TPE balls, TPE 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 certified (specific rating depends on fluid temperature and model configuration)
• Stall-free low pulsation air valve for smooth and rapid changeover
• Up to 40% more efficient than comparable pumps
• Up to 5 times longer diaphragm life compared to other air-operated diaphragm pumps
• Fewer parts than industry peers; externally accessible air valve for fast, easy servicing
• Expanded material offering for handling diverse applications

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

Installation Notes:

• Using genuine GRACO parts ensures optimal performance, safety, and longevity of the pump. Non-genuine parts may compromise reliability and void warranties.
• Follow all safety instructions in the manual before installation
• Ensure proper grounding as per manual instructions
• Use recommended air supply and fluid hoses
• Install bleed-type master air valve and air regulator as required
• Check for correct alignment and secure mounting
• Regularly inspect and maintain diaphragms, balls, and seats for wear
• Consult the equipment manual for detailed installation and maintenance procedures
• Use only compatible fluids and materials as specified
• Perform routine inspections and maintenance to ensure long service life