The GRACO DFD311 is a stainless steel (SS) seated, air-operated double diaphragm pump with a 2-inch (51 mm) BSP port, aluminum center section, PTFE balls, and PTFE diaphragm. It is designed for reliable, efficient fluid transfer in demanding industrial environments.

Key Features:

• Air-operated double diaphragm pump
• Husky 2150, 2 in. (51 mm) BSP
• Aluminum center section, stainless steel seats, PTFE balls, PTFE diaphragm
• Up to 150 gpm (568 lpm)
• Up to 120 psi (8.4 bar, 0.84 MPa)
• Designed for use with a wide range of industrial fluids; compatible with GRACO Husky 2150 series equipment
• Stall-free low pulsation air valve for smooth, rapid changeover
• Improved efficiency (up to 40% more efficient than some competitors)
• Long diaphragm life (up to 5 times longer than some competitors)
• Externally accessible air valve for fast, easy maintenance
• Lube-free operation
• Epoxy-coated air section for tough environments
• Fewer parts than industry peers

Applications:
Ideal for transferring a variety of industrial fluids, including those with solids up to 0.25 in (6.3 mm) in size. Suitable for mining, agriculture, chemical processing, and other demanding environments.

Installation Notes:

• Using genuine GRACO parts ensures optimal performance, reliability, and compatibility with existing equipment.
• Ensure proper alignment and secure mounting of the pump
• Use appropriate fittings and hoses for the BSP port size
• Follow manufacturer guidelines for air supply and fluid connections
• Regularly inspect and maintain the air valve and diaphragm for optimal performance