The GRACO D73525 is an air-operated double diaphragm (AODD) pump, constructed primarily from aluminum, designed for reliable and efficient fluid transfer in demanding industrial environments. It is intended for use in applications requiring high flow rates and portability, such as chemical transfer, paint circulation, and other process industries.

Key Features:

• Air-Operated Double Diaphragm (AODD) Pump
• 1040A, 1-inch (25 mm)
• Aluminum
• Maximum fluid working pressure: 120 psi (0.8 MPa, 8 bar); Maximum air input pressure: 120 psi (0.8 MPa, 8 bar)
• Compatible with a wide range of industrial fluids; suitable for use with GRACO’s Cycleflo controllers
• ATEX II 2 GD Ex h IIC 66°...135°C Gb / Ex h IIIC T135°C Db (dependent on fluid temperature and pump model)
• Lube-free air valve for reduced maintenance
• Durable construction for long service life
• Portable and easy to install
• Suitable for continuous duty cycles
• Efficient operation with minimal downtime

Applications:
Ideal for fluid transfer in chemical, paint, and process industries; suitable for applications requiring high flow rates and portability.

Installation Notes:

• Using genuine GRACO parts ensures optimal performance, reliability, and safety. Non-genuine parts may compromise pump efficiency and longevity.
• Connect air line to pump as per manual instructions
• Use grounded fluid hoses for safety
• Ensure fluid inlet pressure does not exceed 25% of outlet working pressure to maintain efficient operation
• For inlet fluid pressures greater than 15 psi (0.1 MPa, 1 bar), expect reduced diaphragm life
• Torque fasteners to specified values (e.g., 50–60 in-lb for certain components)
• Consult manual for maximum suction lift and temperature limits
• Regularly inspect and maintain air valve and diaphragms
• Use only recommended lubricants and replacement parts
• Follow torque specifications during reassembly
• Check for leaks and wear periodically