The GRACO D3B255 Husky 307 is an air-operated double diaphragm pump with a polypropylene center section, acetal seats, TPE balls, and TPE diaphragm. It is designed for reliable transfer of a wide range of fluids, including oils, fuels, windshield wash solutions, water, and anti-freeze. Some models are UL-approved for use with gasoline, gasoline/alcohol blends (up to 10% ethanol), diesel fuel, fuel oil, and lubricating oil.

Key Features:

• Air-operated double diaphragm pump
• Husky 307, 3/8" BSP
• Polypropylene center section, acetal seats, TPE balls, TPE diaphragm
• Up to 7 gpm (26.5 lpm)
• Maximum fluid working pressure: 100 psi (0.7 MPa, 7 bar); Maximum air input pressure: 100 psi (0.7 MPa, 7 bar)
• Suitable for oil, fuel, windshield wash, water, anti-freeze, gasoline (up to 10% ethanol), diesel, fuel oil, lubricating oil
• UL-approved for certain models (gasoline, gasoline/alcohol blends, diesel, fuel oil, lubricating oil)
• Quick and easy assembly/disassembly
• Easy to service air valve and ball checks
• Stall-free low pulsation air valve for smooth and rapid changeover
• Split manifold option for pumping multiple fluids without mixing
• Every pump tested prior to shipping
• Fully-groundable acetal model available

Applications:
Oil transfer and evacuation, fuel dispense and transfer, windshield wash solution dispense, water and anti-freeze dispense, and other compatible fluid transfer applications.

Installation Notes:

• Using genuine GRACO parts ensures optimal performance, reliability, and safety, and maintains warranty coverage.
• Ensure proper alignment and secure mounting of the pump
• Use compatible fittings and hoses for the intended fluid
• Follow all safety warnings and instructions in the manual
• Regularly inspect and service air valve and ball checks for optimal operation
• Regularly check for leaks and wear
• Clean and inspect diaphragms, balls, and seats as recommended
• Use only genuine replacement parts for repairs