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PP AODD Pumps
PVDF AODD Pumps
SS AODD Pumps
Aluminium AODD Pumps

AODD Pumps

AODD (Air-Operated Double-Diaphragm) Pumps are leakage-resistant pumps that are used to handle highly corrosive chemicals, sludges or viscous fluids. AODD pumps feature two flexible membranes or diaphragms anchored on a common shaft. The forward and backward movement of these diaphragms cause the movement of fluids as desired. Instead of controlling the diaphragm by means of a motor, AODD pumps make use of compressed air, by alternately directing air to either of two air chambers on the diaphragms.

AODD Pumps

How does an air operated double diaphragm pump work?
The Air Operated Double Diaphragm Pump (AODD Pump) is a positive displacement pump that exploits the reciprocating motion of diaphragm and balls. Rubber, thermoplastic, or Teflon diaphragms, as well as other appropriate diaphragms, are utilized in AODD pumps. It consists of two pumping chambers that are filled and expelled alternately using flexible diaphragms. To produce the pumping motion, compressed air is alternately fed into and released from air chambers on opposing sides of the diaphragm.

When the chamber pressure rises due to decreased volume, the diaphragm slides down, forcing the previously drawn fluid out of the chamber of a AODD Pump. Finally, the diaphragm moves up again, drawing fluid into the chamber to complete the cycle. This movement is comparable to that of a cylinder in an internal combustion engine. 

 

AODD Pump materials:

It is critical to select the right materials of construction for the fluid that will be handled. That is why the bodies of PP AODD Pumps are available in two series AODD bolted type of Pump or AODD clamped type of Pump and are available in the following materials:

• Aluminium
• Stainless Steel
• Ductile Iron
• Polypropylene
• PVDF

Different Diaphragm material:

Rubber
Neoprene: use with water/wastewater chemicals
Buna-N: ideal for oil-and-gas applications
EPDM: best for ketones and aldehydes, and acetates
FKM: ideal for aromatic and chlorinated hydrocarbons

PTFE

Ideal in all chemical and acid handling applications across many industries. PTFE Diaphragm one for all media and liquids.