Graco Husky 307 3/8" Air-Operated Double Diaphragm Pump - D3B277

$377.05 $314.21
Polypropylene Fluid Section, Polypropylene Standard Air Valve (NPT) Centre Section, Acetal Seats, Buna Balls, Buna Diaphragms, PTFE O-Rings

3/8 Inch Positive Displacement Double Diaphragm Pump

The Husky 307 has a 3/8 inch (9.52 mm) connection and is available in polypropylene and groundable acetal.

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


  • 3/8 inch (9.52 mm) end porting
  • Fully-groundable acetal model
  • Delivery up to 7 gpm (26.5 lpm)
  • Easy-to-service air valve and ball checks


  • 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



Maximum Fluid Flow:6.5 gpm (26.5 l/min)
Maximum Fluid Discharge Pressure: 100 psi (7 bars, 0.7 MPa)
Maximum Size Pumpable Solids: 1/16 inch (1.5 mm)
Fluid Displacement Per Cycle:0.02 g (0.076 litres)
More Information
Max. Flow Rate (l/min)26.50
Max. Input Pressure (psi)100
Max. Output Pressure (psi)100.00
Fluid to Air Ratio1:1
Air Inlet Size1/4" NPT(F)
Pump Inlet/ Outlet Size3/8" NPT(F)
Max. Pump Speed330 cpm
Fluid Section MaterialPolypropylene
Centre Section MaterialPolypropylene Standard Air Valve (NPT)
PortingPolypropylene Standard Porting (BSP)
Manifold O-RingsPTFE