The GRACO D3B215 Husky 307 is a polypropylene air-operated double diaphragm pump with a polypropylene center section, acetal seats, PTFE balls, and TPE diaphragms. It is designed for reliable, low-maintenance transfer of water and compatible fluids in industrial and maintenance applications.

Key Features:

• Air-Operated Double Diaphragm Pump
• Husky 307, 3/8" BSP porting
• Polypropylene center section, acetal seats, PTFE balls, TPE diaphragms
• 7 gpm (26.5 lpm) maximum free flow delivery
• 100 psi (7 bar, 0.7 MPa) maximum working pressure
• Suitable for water and compatible fluids; maximum solids size: 0.06 in (1.5 mm)
• Quick and easy assembly/disassembly
• Easy-to-service air valve and ball checks
• Stall-free low pulsation air valve for smooth operation
• Fully-groundable acetal model available
• Operates on as little as 20 psi (1.4 bar, 0.14 MPa) air pressure
• Split manifold option for pumping multiple fluids without mixing

Applications:
Transfer of water and compatible fluids from tanks (e.g., 50–275 gallon water tanks), mist or vapor blasting, industrial maintenance, and lubrication systems.

Installation Notes:

• Using genuine GRACO parts ensures optimal performance, reliability, and compatibility with existing equipment.
• Ensure proper alignment and secure all fittings to prevent leaks
• Check air supply pressure (minimum 20 psi recommended)
• Use appropriate thread sealant for BSP connections
• Regularly inspect and service air valve and ball checks for longevity