The GRACO D51311 is a Husky 515 air-operated double diaphragm pump with a polypropylene (PP) center section, stainless steel (SS) seats, PTFE balls, and PTFE diaphragm. It is designed for reliable, leak-free transfer of a wide range of fluids in industrial and manufacturing environments.

Key Features:

• Air-operated double diaphragm pump
• Husky 515, 1/2 in NPT
• Polypropylene (PP) center section, stainless steel (SS) seats, PTFE balls, PTFE diaphragm
• Up to 15 gpm (56.7 lpm)
• Maximum fluid working pressure: 100 psi (0.7 MPa, 7 bar); Air pressure operating range: 30–100 psi (0.2–0.7 MPa, 2.1–7 bar)
• Compatible with a wide range of industrial fluids; center and end porting options available
• Stall-free low pulsation air valve for smooth, rapid changeover
• Bolt-through fluid cover design eliminates leaks and enhances safety
• No mechanical seals to cause fluid leaks or failures
• Runs quietly at less than 85 dBa, with remote muffler capability
• Easy-to-service air valve and ball checks
• Split manifold option for pumping multiple fluids without mixing
• Reliable air valve for years of dependable performance

Applications:
Ideal for transferring a variety of fluids in industrial, manufacturing, and maintenance settings, including lubrication, chemical transfer, and process applications.

Installation Notes:

• Using genuine GRACO parts ensures optimal performance, safety, and longevity of the pump.
• Ensure the pump is properly grounded before operation to prevent fire and explosion hazards
• Use conductive hoses and ensure the dispense valve nozzle is in contact with the container
• Follow all safety guidelines and grounding instructions as outlined in the manual
• Regularly inspect and maintain air valve and ball checks for reliable operation