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Built for Power, Built to Last

Global Provider of Air-Operated Double Diaphragm Pumps


Iwaki Air AODD pumps are engineered for maximum utility. They are portable and easy to install, operate, and maintain. Infinitely variable flow rates and variable discharge pressures can handle a large range of fluids, including corrosive chemicals and flammable liquids. Iwaki Air AODD pumps can run dry, self-prime and dead-head without damaging the pump. Other design elements that distinguish Iwaki Air AODD pumps include body stabilization features to ensure heat resistance, and sound suppression construction to reduce both mechanical noise and compressed air noise. Most important, the lube-free air valve features a non-centering spring specially designed not to stall and is accessible for easy maintenance.

These pumps are built for power. A higher power output means the pump can operate with less applied air pressure compared with many competitor’s pumps – often outperforming pumps that may have a higher listed flow rate.


Total Quality Management is ingrained in the Iwaki Air brand of Air-Operated Double Diaphragm (AODD) pumps, which are manufactured under stringent ISO 9001 Ver. 2015 standards. Quality is paramount in every aspect of the design, engineering and manufacturing of Iwaki Air AODD pumps. An industry-leading and innovative pilot valve design and superior non-lubricated air valve technology are key to Iwaki Air AODD pump’s renowned reliability. Quality is evident from the start, in the sourcing of raw materials, which come from well known and reputable global suppliers. Careful selection of high quality materials ensures exceptional chemical resistance compared to pumps made from inferior materials. Every pump is operation- and leak-tested to ensure years of reliable service.

  • High Performance Liquid Transfer – Iwaki Air AODD pumps are engineered for maximum utility.

  • Low Maintenance, High Value – The fundamental design of Iwaki AODD Pumps will remain constant through the years. Our commitment to quality means pumps will provide a long service life and won’t become obsolete.


Revolutionary new spring design uses stronger, light-weight material for a smoother stroke with less wear and tear of all spool components (fully interchangeable with C-Spool model pumps).

Eliminate alignment and leaking issues associated with band clamp-style pumps.

Clean, environmentally friendly design is engineered without the need for lubrication. Lube-free operation extends the life of all air motor parts

Easy external access allows servicing the air motor in place.

Industry-leading pilot valve system design is fully independent and virtually non-wearing. Static seals are dirt and moisture resistant. Pilot valve and springs are made from high tensile stainless steel that will not bend or rust. Faster cycles with shorter strokes will extend diaphragm life.

Oversized ports allow air contamination to pass through the pump eliminating blockages and freezing.

The unique new Looped C-Spool greatly reduces the pump stalling

Compressed air expands gradually through our innovative staged air chamber exhaust system to reduce freezing. Large air port design allows contaminated air to pass through the pump and out the exhaust.

High-wear components are available individually or in pre-packaged kits for easy replacement, low-cost maintenance, and lower cost of ownership.

All 3/4″ and 1″ pumps now come with the EcoRing technology that allows for 20-25% improved air consumption with no effect on flow rates.



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