The GRACO 650571 is an air-operated double diaphragm pump featuring a PVDF (polyvinylidene fluoride) end flange, stainless steel center section, PVDF seats, PTFE (polytetrafluoroethylene) balls, and PTFE diaphragm. It is designed for reliable, low-pulsation transfer of aggressive or corrosive fluids in industrial applications.

Key Features:

• Air-operated double diaphragm pump
• Husky 1050
• PVDF end flange, stainless steel center section, PVDF seats, PTFE balls, PTFE diaphragm
• Maximum free flow delivery: 50 gpm (189 lpm); Maximum flow rate (specific to this configuration): 42 gpm (as per some listings)
• Maximum fluid working pressure: 125 psi (8.6 bar, 0.86 MPa)
• Compatible with aggressive and corrosive fluids due to PVDF and PTFE materials; suitable for industrial process equipment
• Stall-free low pulsation air valve for smooth and rapid changeover
• Bolted design for even sealing and easy maintenance
• Reliable performance with high cycle rates (up to 280 cpm)
• Suitable for handling solids up to 1/8 in (3.2 mm)
• IEC 90 gearbox for specific motor compatibility

Applications:
Transfer of aggressive, corrosive, or abrasive fluids in industrial settings such as chemical processing, mining, agriculture, and manufacturing. Suitable for applications requiring resistance to harsh chemicals and reliable, low-maintenance operation.

Installation Notes:

• Using genuine GRACO parts ensures optimal performance, reliability, and compatibility with existing equipment. Non-genuine parts may compromise safety and efficiency.
• Ensure proper alignment and secure bolting of all components for leak-free operation
• Check compatibility of fluid with pump materials (PVDF, PTFE, stainless steel)
• Follow manufacturer guidelines for air supply and pressure settings
• Regularly inspect diaphragms, balls, and seals for wear and replace as needed
• Consult the equipment manual for detailed installation and maintenance procedures