Graco Husky 307 3/8" Air-Operated Double Diaphragm Pump - D3B977

    $503.94 $419.95
    Polypropylene Fluid Section, Polypropylene Standard Air Valve (NPT) Centre Section, Polypropylene 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) 26.5
    Max. Input Pressure (psi) 100
    Max. Output Pressure (psi) 100
    Fluid to Air Ratio 1:1
    Air Inlet Size 1/4" NPT(F)
    Pump Inlet/ Outlet Size 3/8" NPT(F)
    Max. Pump Speed 330 cpm
    Fluid Section Material Polypropylene
    Centre Section Material Polypropylene
    Porting Polypropylene Standard Porting (NPT)
    Seats Polypropylene
    Balls TPE
    Diaphragms TPE
    Manifold O-Rings PTFE
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