The GRACO D3A277 is an air-operated double diaphragm pump designed for reliable fluid transfer. It features a polypropylene (PP) center section, acetal (AC) seats, and BN (nitrile) balls and diaphragm. This pump is intended for use in industrial applications requiring safe, efficient, and versatile pumping of various fluids within GRACO equipment.

Key Features:

• Air-operated double diaphragm pump
• Husky 307 AC (3/8 in. BSP)
• PP center section, AC seats, BN balls & BN diaphragm
• Up to 7 gpm (26.5 lpm)
• Maximum fluid and air pressure: 100 psi (0.7 MPa, 7 bar)
• Designed for use with compatible GRACO Husky 307 series equipment and accessories
• Stall-free low pulsation air valve for smooth and rapid changeover
• Quick and easy assembly and disassembly
• Easy-to-service air valve and ball checks
• Split manifold option available for pumping multiple fluids without mixing
• Fully-groundable acetal model
• Every pump is tested prior to shipping

Applications:
Industrial fluid transfer, including chemical, water, and oil handling; suitable for environments requiring reliable, low-maintenance pumping solutions.

Installation Notes:

• Using genuine GRACO parts ensures optimal performance, reliability, and safety of the pump and connected equipment.
• Ensure all connections are secure and compatible with 3/8 in. BSP porting
• Follow manufacturer guidelines for air and fluid pressure limits
• Regularly inspect and maintain air valve and ball checks for optimal performance
• Use the split manifold option if pumping multiple fluids to prevent cross-contamination
• Periodically check for wear on diaphragms, balls, and seats
• Clean and inspect pump components during routine maintenance
• Replace worn or damaged parts with genuine GRACO components