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Directflo diaphragm pumps the fluid through the center of the pump and compressed air acts on the outside face of the diaphragms.


Pump Pressure Ratio


Maximum Free Flow Rate

11 gal/min (42 l/min)

Maximum Suction Lift


Minimum Air Pressure

20 psi (1.5 bar)

Maximum Air Pressure

115 psi (18 bar)

Max Size Solid Suspension


Air Inlet

3/8" NPTF

Fluid Outlet

1/2" NPTF

Fluid Inlet

1/2" NPTF

Wetted Materials

Polypropolene, PTFE, TPE

553164 - Directflo 30 - Poly Diaphragm Pump

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