The GRACO D31277 is an air-operated double diaphragm pump designed for reliable fluid transfer in industrial settings. It features a polypropylene center section, acetal seats, and Buna-N (nitrile) balls and diaphragms, making it suitable for handling a variety of chemicals and fluids. This pump is intended for use within GRACO equipment for applications requiring robust, chemical-resistant pumping solutions.

Key Features:

• Air-operated double diaphragm pump
• Husky 307, 3/8 in. (9.52 mm) NPT
• Polypropylene center section, acetal seats, Buna-N balls and diaphragms
• 7 gpm (26.5 lpm)
• Maximum fluid working pressure: 100 psi (0.7 MPa, 7 bar); Maximum air input pressure: 100 psi (0.7 MPa, 7 bar)
• Designed for use with a wide range of chemicals and fluids, compatible with GRACO Husky 307 series equipment
• ATEX Certified
• Stall-free, low pulsation air valve for smooth and rapid changeover
• Quick and easy assembly/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 tested prior to shipping

Applications:
Ideal for industrial fluid transfer, chemical processing, and applications requiring chemical-resistant, reliable pumping solutions. Suitable for use in environments requiring ATEX certification for explosive atmospheres.

Installation Notes:

• Using genuine GRACO parts ensures optimal performance, safety, and compatibility with existing equipment.
• Ensure all connections are secure and leak-free before operation
• Follow manufacturer guidelines for air supply and fluid compatibility
• Regularly inspect and maintain air valve, ball checks, and diaphragms for optimal performance
• Refer to the GRACO Husky 307 installation and parts manual for detailed instructions