The GRACO D31216 Husky 307 is an air-operated double diaphragm pump with a polypropylene center section, acetal seats, PTFE balls, and a Santoprene diaphragm. It is designed for reliable, low-maintenance transfer of a wide range of fluids, including those with mild abrasives or solids, in industrial and maintenance applications.

Key Features:

• Air-operated double diaphragm pump
• Husky 307, 3/8" NPT
• Polypropylene center section, acetal seats, PTFE balls, Santoprene diaphragm
• Up to 7 gpm (26.5 lpm)
• Maximum discharge pressure: 100 psi (0.7 MPa, 7 bar)
• Compatible with a wide range of fluids, including mild abrasives and solids up to 0.06 in
• Stall-free, low pulsation air valve for smooth operation
• Quick and easy assembly/disassembly
• Easy-to-service air valve and ball checks
• Fully-groundable acetal model
• Split manifold option for pumping multiple fluids without mixing
• Every pump tested prior to shipping

Applications:
Ideal for transferring fluids in industrial, maintenance, and lubrication applications, including those with mild abrasives or solids. Suitable for use in mining, agriculture, and general manufacturing environments.

Installation Notes:

• Using genuine GRACO parts ensures optimal performance, reliability, and safety. Non-genuine parts may compromise pump efficiency and longevity.
• Ensure all connections are secure and use appropriate thread sealant for NPT fittings
• Verify air supply is clean and regulated to at least 20 psi (1.4 bar, 0.14 MPa)
• Check for proper grounding if required for your application
• Follow manufacturer’s instructions for diaphragm and ball check maintenance
• Inspect for leaks and proper operation after installation