The GRACO 651872 is a Husky 1050S-E series air-operated double diaphragm pump constructed with stainless steel (SS) wetted parts, PTFE (PT) balls, and PTFE/Stainless Steel (PS) diaphragms. It is designed for transferring a wide range of fluids, including slurries and abrasives, in industrial and maintenance applications.

Key Features:

• Air-Operated Double Diaphragm Pump
• Husky 1050S-E, 1" (25.4 mm) NPT
• Stainless Steel (SS) wetted parts, PTFE (PT) balls, PTFE/Stainless Steel (PS) diaphragms
• Maximum free flow delivery: 50 gpm (189 lpm)
• Maximum fluid working pressure: 125 psi (8.6 bar, 0.86 MPa) [Note: Some sources list 100 psi (7 bar, 0.7 MPa) for certain configurations; confirm for your specific model]
• Handles slurries, abrasives, and fluids compatible with stainless steel and PTFE
• UL listed
• Stall-free low pulsation air valve for smooth and rapid changeover
• Durable pump technology for handling tough fluids
• Low maintenance and reliable operation
• Suitable for continuous duty cycles

Applications:
Ideal for transferring fluids, slurries, and abrasives in industrial, mining, agricultural, and maintenance environments. Suitable for applications requiring low pulsation and smooth flow.

Installation Notes:

• Using genuine GRACO parts ensures optimal performance, reliability, and safety. Non-genuine parts may compromise pump integrity and void warranties.
• Ensure all wetted parts are compatible with the fluid being pumped
• Follow manufacturer guidelines for air supply and pressure settings
• Regularly inspect diaphragms and balls for wear and replace as needed
• Use appropriate thread sealant on NPT connections
• Refer to the manual for specific installation and maintenance procedures