The GRACO DFR311C31 is a stainless steel air operated double diaphragm (AODD) pump, designed for reliable, lube-free transfer of a wide range of fluids. It features a 2" ANSI flange and is constructed with a stainless steel body and PTFE diaphragms, making it suitable for handling corrosive and abrasive chemicals in industrial environments.

Key Features:

• Air Operated Double Diaphragm Pump (AODD)
• Husky 2150 S/S, 2" ANSI Flange
• Stainless steel body, PTFE diaphragms
• Up to 150 gpm (568 lpm)
• Up to 120 psi (8.4 bar, 0.84 MPa)
• Compatible with a wide range of industrial fluids, including corrosive and abrasive chemicals
• ATEX rated (explosion-proof for hazardous environments)
• Stall-free low pulsation air valve for smooth operation
• Up to 5 times longer diaphragm life compared to industry peers
• Fewer parts for easier maintenance
• Externally accessible air valve for quick servicing without uninstalling the pump
• Lube-free operation
• Epoxy-coated air section for tough environmental conditions

Applications:
Ideal for transferring chemicals, solvents, paints, and other industrial fluids in environments requiring robust, reliable, and maintenance-friendly pumping solutions. Suitable for use in hazardous areas due to ATEX certification.

Installation Notes:

• Using genuine GRACO parts ensures optimal performance, reliability, and safety, and maintains warranty coverage.
• Ensure proper alignment of the pump with piping to avoid stress on flanges
• Use appropriate gaskets and seals for the fluid being handled
• Follow all local safety regulations, especially in ATEX-rated environments
• Regularly inspect diaphragms and valves for wear and replace as needed
• Keep the air supply clean and dry to prolong pump life