The GRACO DB3666 is an air-operated double diaphragm pump with an aluminum center section, designed for reliable fluid transfer in industrial environments. It features Santoprene™ seats, balls, and diaphragm for chemical compatibility and durability. This pump is intended for use in applications requiring robust, maintenance-friendly fluid handling.

Key Features:

• Air-Operated Double Diaphragm Pump
• Husky 1590, 1-1/2 in. (38.1 mm) NPT
• Aluminum center section, Santoprene™ seats, balls, and diaphragm
• Maximum free flow delivery: 100 gpm (378.5 lpm)
• Maximum fluid working pressure: 120 psi (8.4 bar, 0.84 MPa)
• Compatible with a wide range of industrial fluids including water, wastewater, detergents, oils, and more
• Patented, high-reliability closed center air valve
• Online serviceable for ease of maintenance
• Epoxy-coated air section for tough environmental conditions
• Robust construction for high reliability and long duty cycle

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

Installation Notes:

• Using genuine GRACO parts ensures optimal performance, reliability, and compatibility with existing equipment.
• Ensure all connections are tight and leak-free
• Follow manufacturer guidelines for air supply and pressure settings
• Regularly inspect and maintain diaphragms, seats, and balls for wear
• Use appropriate thread sealant on NPT connections
• Perform routine maintenance checks as recommended by GRACO
• Replace worn components with genuine GRACO parts
• Keep the pump and surrounding area clean to prevent contamination