They can easily pump from clean, light viscosity fluids to corrosive, abrasive medium viscosity fluids and can transfer large particles without damage. Due to their pneumatic motor, they could be used in potentially explosive areas. Follow a guided start-up process and troubleshoot common start-up issues. If peristaltic hose pump maintenance is giving your wallet the squeeze, diaphragm pumps could be a more cost-effective solution. Adjust fluid pressure up to p. All EXP Series pumps are enhanced with electronic interface capability, providing accurate, electronically controlled dosing.
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Tired of troubleshooting your centrifugal pump? AODD vs. Air-operated double diaphragm AODD pumps can be a more reliable choice than centrifugal pumps in many situations. A centrifugal pump design is simple, with easy to understand pumping principles. But they are one of the most difficult industrial pumps to choose for an application. There are many interrelated design and set up variables that must be correctly determined for a specific application for a centrifugal pump to work as designed.
If the pump and process are set up properly, the pump works very well. Rarely, if ever, are these pumps rechecked for viability after any process changes. Centrifugal pumps are often a source of chronic maintenance and reliability problems.
How often do process engineers revisit the pump configuration when they make a change to process? Answer: Very rarely, if ever. An AODD pump is easier to specify for an application and can run reliably across the entire rated operating range, not just a single point. Air Operated Diaphragm Pumps can run dry, stall, and significantly reduce the possibility of cavitation during operation. These are five common issues or applications where an AODD pump could be a better solution.
This makes an AODD pump a better choice to handle shear sensitive liquids. Diaphragm pumps operate at lower speeds, are gentler on products, and are usually preferred in these types of applications. Standard ANSI centrifugal pumps do not create a vacuum and cannot create a suction lift.
Diaphragm pumps are the logical choice when a suction lift is required. If a lower or higher flow is needed, efficiency is reduced or can result in cavitation damage, shaft deflection, and premature pump failure. An AODD pump is well suited for varying flow.
If pumping pressure increases in an application, an AODD pump will easily dead head, or stop pumping. Meanwhile a centrifugal pump will continue to build pressure until something fails, the pump is severely damaged, or both. Some liquids can vary in viscosity due to temperature or chemical reaction. A rise in viscosity alter the flow rate and efficiency, and increases pressure.
AODD pumps are the right choice for applications with viscosity fluctuations. They deliver constant flow, allowing them to easily meet process requirements.
Air Operated Double Diaphragm Pump
Principles of AODD Pump Operation