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Graco D31255 | Husky 307 Double Diaphragm Pump

by Graco
SKU D31255
Original price $529.00 - Original price $529.00
Original price
$529.00 - $529.00
Current price $529.00

Husky 307 Acetal (3/8" NPT) Standard Pump, Polypropylene Center Section, Acetal Seats, TPE Balls & TPE Diaphragm

The Husky 307 air-operated diaphragm pump features a stall-free low pulsation air valve that provides a smooth and rapid changeover.

Determine the best Husky pump for your applications. Read more at Graco Husky Air Operation Double Diaphragm Pump Selection Guide.


Part Number Pump Description Fluids Max PSI

Husky 307

Acetal – 3/8 in


  • Oil evacuation
  • Oil transfer
  • Water
  • Anti-freeze
  • Windshield wash fluid

100 psi

(6.9 bar)


Download Husky 307 Product Manual 



The Husky 307 air-operated diaphragm pump features a stall-free low pulsation air valve that provides a smooth and rapid changeover.

Typical applications include oil transfer and evacuation, fuel dispense and transfer, windshield wash solution dispense, and water and anti-freeze dispense. Some models UL-approved for use in pumping gasoline and gasoline/alcohol blends up to 10% ethanol, diesel fuel, fuel oil and lubricating oil.

  • Quick and easy assembly and disassembly design
  • Easy to service air valve and ball checks
  • Operates on as little as 20 psi (1.4 bar, 0.14 MPa)
  • Split manifold option to pump multiple fluids without mixing
  • Every pump is tested prior to shipping
  • 3/8 in (9.52 mm) end porting
  • Delivery up to 7 gpm (26.5 lpm)
  • Easy-to-service air valve and ball checks




Air Exhaust Port Size (in) 3/8
Air Exhaust Port Thread Gender Female
Air Exhaust Port Thread Type NPT
Air Inlet Size (in) 1/4
Air Inlet Thread Gender Female
Air Inlet Thread Type NPT
Application Industrial
Ball Material TPE
Center Section Material Polypropylene
Compatible Material Antifreeze, Detergents, Motor Oil, Hydraulic Fluid, Cutting Oil, Water - Wastewater Treatment, Water, Ink
Connection Type Threaded
Diaphragm Material TPE
Fluid Inlet Size (in) 3/8
Fluid Inlet Thread Gender Female
Fluid Inlet Thread Type NPT
Fluid Outlet Size (in) 3/8
Fluid Outlet Thread Gender Female
Fluid Outlet Thread Type NPT
Fluid Section Material Acetal
Manifold Configuration End Port
Manifold O-Ring Material PTFE
Material Acetal
Maximum Air Consumption (SCFM) 5.5
Maximum Air Pressure (MPa) 0.69
Maximum Air Pressure (psi) 100
Maximum Cycle Rate (CPM) 330
Maximum Flow Rate (GPM) 6.5
Maximum Fluid Pressure (MPa) 0.69
Maximum Fluid Pressure (psi) 100
Maximum Operating Temperature (°F) 150
Maximum Solid Size (in) 0.0625
Minimum Operating Temperature (°F) 40
Overall Height (in) 8.13
Power Source Air
Seat Material Acetal
Standards Met ATEX, CE
Type Pneumatic Diaphragm Pump
Weight (lb) 5.25
Wetted Material Acetal, Polypropylene, TPE, PTFE


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