AOK Air Operated Diaphragm Pump

AOK50 PP Flap Valve Air Operated Diaphragm Pump

Our AOK50 PP high flow flap valve pneumatic diaphragm pump can be called the Large solid particle flap valve diaphragm pump, it can pass through the larger solid particles. the use of the AOK50 PP flap valve waste water diaphragm pump even in bad working conditions, the impurities of sewage or complex liquid medium, is not easy to plug.

AOK50-PP Flap valve Air Operated Diaphragm Pump

This is Air Operated Diaphragm Pump with a Flap valve design. The stainless steel valve seat can effectively resist particle wear and has excellent particle passing capacity. The plastic shell of the whole pump is light, durable, corrosion-resistant, and other properties. The import and export adopt a three-stage design and the direction is flexible. The all-bolt structure is strong and durable, which is convenient for replacement and maintenance.


Mud water handling at mining/construction site

Waste water handling at sewage plant, livestock farm and food factory.

Wastewater handling at petrochemical plant


Self priming and dry run ability without damage

Precision cast iron inner plate

Non-metallic inner plate

Suitable for liquids which contain large and irregular particles

Top-suction / bottom-discharge design to easily handling of solid parts: the gravity force helps to keep clean the flap valves

Advanced and efficient air valve

Non-metallic construction. No Impeller, low shear

Full bolt construction for a quick disassembly

Hot aluminum flap valve air pump AOK50




Inlet/ Outlet size





Flow Rate






Head (m)


Suction Stroke (m)


Max. Particle Diameter (mm)


Max.Air Pressure (kg/cm²)


Max.Air Consumption (m³/min)


Material of flap valve air operated diaphragm pump

Pump body: PP (Polypropylene)

Center block: PP (Polypropylene) AL (Aluminum)

Diaphragm: PTFE, Santoprene, Viton, etc.

Valve ball: PTFE, Santoprene, etc.

Valve seat: Polypropylene, Polyoxymethylene, PVDF, etc.

Performance Curve:

Installation Size:

                                                                    Flap Valve Diaphragm Pump

                                                                   Can passing big solids up to 40mm

Ball Valve Diaphragm Pump

Can not passing big solids, max. only 9.4mm

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If you are interested in our products and want to know more details,please leave a message here,we will reply you as soon as we can.