Monthly Archives: February 2015


Introducing the Remote Pump Head

Occasionally we have to pump some liquids with extreme temperatures that are either too hot or too cold. In either case, these temperatures could potentially cause long term wear and possible damage to the internals of the gear housing and the hydraulic oil it contains. AquFlow’s Remote Pump Head is designed to keep that temperature related effect away from the rest of the pump components by separating the liquid pump chamber away. We use the appropriate intermediate oil to better handle the temperatures and help dissipate the temperature difference.

Essentially the working principle of this pump is similar to any other AquFlow hydraulic diaphragm metering pump. The only difference is that there is an intermediate hydraulic oil that transfers the pressure to a pump head that is some distance away from the rest of the pump. These pumps are highly engineered pumps and they need to be customized to each application specifically. Hence we would need to know all details of the application such as exact process liquid, temperature of the liquid, viscosity and specific gravity of the liquid, ambient temperature, duty cycle (how much time the pump is running before it is off), suction and discharge conditions etc. before we can determine the exact configuration most suited to the application.

For full features and specifications, download the brochure HERE.

By |February 24th, 2015|News, Products|0 Comments

Top 5 Causes for AODD Pump Failure

1.       Air Valve Stalling, Clogging or Leaking: Stalling of the air valve often has to do with the design of the airways inside the valve. If the design in less than optimal it will stall under certain conditions. Same can be said about leakage of air where the air mostly blows through the valve instead of being redirected to push the diaphragm. Clogging on the other hand could be due to the quality of the air you are using. Make sure you use filtered air to run the pump.

2.      Diaphragm Rupture: The diaphragm in an AODD pump is always subject to mechanical stress and over time it causes stress cracks and failure. Material of the diaphragm combined with the method of manufacturing plays an important role in the longevity of diaphragms. Another important factor is the pressure. The higher the pressure the higher is the stress on the diaphragm. Lastly the number of strokes is the ultimate measure for the life of the diaphragm. Pumps that run faster will likely fail more quickly.

3.      Check Valve Failure: Usually AODD pumps use ball style check valves. These check valves are likely to fail due to something getting in between the ball and the seat preventing a good firm leak-proof closing of the valve. Use of a strainer will reduce this possibility. Additionally flushing the pump when you suspect something is stuck often clears the check valves of debris. Wear of the ball and seat also causes leak paths. This wear could be due to abrasive particles in the liquid or just a matter of poor material choice for balls or seats.

4.      Muffler Icing or Clogging: The main reason for the muffler icing is the […]

By |February 12th, 2015|Uncategorized|0 Comments