The GRACO D52911C31 is an air-operated double diaphragm pump featuring a polypropylene (PP) center section and body, with PTFE balls and diaphragms. It is designed for reliable, leak-free transfer of a wide range of fluids, including those with small solids, in industrial and maintenance applications.

Key Features:

• Air-operated double diaphragm pump
• Husky 515, 1/2" NPT
• Polypropylene (PP) center section and body, PTFE balls and diaphragms, PP seats
• Up to 15 gpm (57 lpm)
• Maximum discharge pressure: 100 psi (7 bar, 0.7 MPa)
• Compatible with a wide range of fluids, including those with solids up to 3/32" (2.5 mm)
• Fully-groundable acetal model
• Easy-to-service air valve and ball checks
• Reliable air valve for years of dependable performance
• No mechanical seals to cause fluid leaks or failures
• Runs quietly at less than 85 dBa with remote muffler capability
• Operates on as little as 20 psi (1.4 bar, 0.14 MPa)
• Center and end porting options
• Split manifold option to pump multiple fluids without mixing

Applications:
Ideal for transferring fluids in industrial, maintenance, and lubrication systems, including those with small solids. Suitable for use in mining, agriculture, and other demanding environments.

Installation Notes:

• Using genuine GRACO parts ensures optimal performance, reliability, and compatibility with existing equipment.
• Ensure proper alignment of inlet and outlet connections (1/2" NPT)
• Use appropriate air supply (minimum 20 psi, 1/4" NPT air inlet)
• Check for leaks and proper grounding if required
• Regularly inspect and service air valve and ball checks for continued reliability