The GRACO 647671 is an air-operated double diaphragm pump designed for transferring a variety of fluids, including water, antifreeze, and fuel. It features an aluminum center section and body, with Buna-N (BN) seals, seats, balls, and diaphragm for chemical resistance and durability. This pump is engineered for reliable, leak-free operation in demanding industrial environments.

Key Features:

• Air-operated double diaphragm pump
• Husky 1050, 1 in. (25.4 mm) BSPT
• Aluminum center section and body, Buna-N (BN) seals, seats, balls, and diaphragm
• 189 LPM (50 GPM)
• 8.6 bar (125 psi, 0.86 MPa)
• Suitable for water, antifreeze, fuel, and compatible with a wide range of industrial fluids
• ATEX rated (for certain configurations, check specific model for certification details)
• Stall-free, low pulsation air valve for smooth and rapid changeover
• One-piece center section eliminates leaks and reduces maintenance
• Modular air valve for longer diaphragm life (up to 5x longer)
• Four-bolt joint design for even sealing pressure and leak-free operation
• Multiple ports for installation flexibility

Applications:
Transfer of water, antifreeze, fuel, and other compatible industrial fluids in mining, agriculture, manufacturing, and maintenance operations.

Installation Notes:

• Using genuine GRACO parts ensures optimal performance, reliability, and safety, and maintains warranty coverage.
• Ensure all connections are tight and leak-free before operation
• Use appropriate thread sealant for BSPT connections
• Follow manufacturer’s guidelines for air supply and fluid compatibility
• Regularly inspect and maintain seals and diaphragms for optimal performance