The GRACO D31331 is an air-operated double diaphragm pump designed for reliable fluid transfer in industrial settings. It features a polypropylene (PP) center section, stainless steel (SS) seats and balls, and a PTFE diaphragm, making it suitable for handling a wide range of chemicals and abrasive fluids.

Key Features:

• Air-Operated Double Diaphragm Pump
• Husky 307 AC, 3/8 in. (9.52 mm) NPT
• PP center section, SS seats, SS balls, PTFE diaphragm
• Up to 7 gpm (26.5 lpm)
• Maximum discharge pressure: 100 psi
• Compatible with a wide range of industrial fluids, especially chemicals and abrasives
• Quick and easy assembly/disassembly
• Easy-to-service air valve and ball checks
• Stall-free low pulsation air valve for smooth operation
• Split manifold option available for pumping multiple fluids without mixing
• Fully-groundable acetal model available (not this specific part, but in the series)
• Every pump is tested prior to shipping

Applications:
Ideal for transferring chemicals, solvents, and abrasive fluids in industrial, mining, agricultural, and manufacturing environments. Suitable for applications requiring reliable, low-maintenance fluid handling.

Installation Notes:

• Using genuine GRACO parts ensures optimal performance, reliability, and safety. Non-genuine parts may compromise pump integrity and void warranties.
• Ensure all connections are tight and leak-free before operation
• Follow manufacturer guidelines for air supply and pressure settings
• Regularly inspect and service air valve and ball checks for optimal performance
• Use appropriate personal protective equipment when handling chemicals