The GRACO 649403 is a 1-inch air-operated double diaphragm pump featuring a PVDF fluid section, polypropylene (PP) center section, and FKM (fluoroelastomer) seats, balls, and diaphragms. It is designed for reliable, efficient transfer of aggressive chemicals and fluids in industrial applications.

Key Features:

• Air-operated double diaphragm pump
• Husky 1050, 1 inch (25.4 mm) connection
• PVDF fluid section, PP center section, FKM seats, FKM balls, FKM diaphragm
• Maximum fluid flow: 50 gpm (189 lpm)
• Maximum fluid discharge pressure: 125 psi (8.6 bar, 0.86 MPa)
• Compatible with aggressive chemicals and a wide range of industrial fluids
• Stall-free low pulsation air valve for smooth and rapid changeover
• One-piece center section eliminates leaks and reduces maintenance
• Spring-loaded, externally serviceable pilot valves for faster changeover and reduced pulsation
• Up to 5 times longer diaphragm life compared to other double diaphragm pumps in its class
• 30% more efficient than market leader
• 20% increase in fluid flow compared to Husky 1040
• Expanded material offering for diverse applications
• Available in ATEX configuration

Applications:
Ideal for transferring aggressive chemicals, solvents, acids, and other industrial fluids in manufacturing, chemical processing, and maintenance environments.

Installation Notes:

• Using genuine GRACO parts ensures optimal performance, reliability, and compatibility with existing equipment.
• Ensure proper alignment of end flanges and secure all connections
• Use compatible fittings and gaskets for chemical resistance
• Follow manufacturer guidelines for air supply and pressure settings
• Regularly inspect diaphragms, seats, and balls for wear and replace as needed
• Consult the equipment manual for specific installation and maintenance procedures