Unibloc Air-Operated Double Diaphragm (AODD) Pumps
At Process & Power, we proudly supply Unibloc AODD Pumps, part of Unibloc Hygienic Technologies, a trusted name in sanitary and industrial pumping solutions. Unibloc’s air-operated double diaphragm (AODD) pumps are engineered for reliability, durability, and exceptional performance in demanding hygienic, chemical, and industrial applications.
Product Highlights
Sanitary AODD Pumps – Designed for food, beverage, and pharmaceutical applications requiring FDA- and EHEDG-compliant materials.
Industrial AODD Pumps – Rugged construction for handling chemicals, slurries, and viscous fluids.
Quick-Strip Design – Simplified maintenance and cleaning with tool-free disassembly.
Energy-Efficient Operation – Optimized air valve design for reduced air consumption and downtime.
Wide Material Selection – Available in stainless steel, aluminum, polypropylene, and conductive polymers.
Why Choose Unibloc AODD Pumps?
Proven reliability in both hygienic and industrial fluid transfer
Engineered for easy cleaning, safety, and energy efficiency
Backed by Unibloc’s legacy of precision manufacturing and innovation
👉 Contact Process & Power for Unibloc AODD Pumps
📍 1721 Corporate Avenue • Memphis, TN 38132
📞 (901) 362-5500
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Unibloc AODD Pumps FAQ
What Unibloc equipment does this page cover?
This page covers air-operated double diaphragm equipment for appropriate industrial and hygienic transfer duties. It is separate from the Unibloc positive displacement page elsewhere in the menu.
Can an AODD pump be used for a hygienic product?
A suitable sanitary configuration may be considered. Verify product-contact materials, surface finish, cleanability, and documentation for the exact pump.
Are all Unibloc AODD models designed for tool-free cleaning?
Do not assume so. Disassembly and cleaning features vary by configuration; confirm the quoted model's instructions and supplied hardware.
Can an AODD pump move thicker products?
It may, but viscosity affects inlet filling and achievable flow. Provide viscosity, temperature, suction arrangement, and required throughput for selection.
What is needed to transfer products containing particles?
Describe particle size, softness, concentration, and acceptable product damage. Check valve passages and the pump's operating limits before selecting a model.
How should a sanitary AODD pump be cleaned?
Use a procedure approved for the specific pump and process. Cleaning method, chemicals, temperature, and any required disassembly need to be validated for the product.
How does an air-operated double diaphragm pump work?
Compressed air alternately drives two diaphragms. Their movement draws liquid into one chamber and pushes it from the other, with check valves directing the flow.
How do I size the compressed-air supply?
Use the pump's air-consumption curve at the required liquid flow and discharge pressure. Include line losses and other air users so sufficient pressure reaches the pump during operation.
Why is the pump cycling but not moving liquid?
Possible causes include an empty source, suction leaks, blocked passages, or worn check valves. Confirm the fluid can reach the inlet before assuming the air motor needs repair.
Why does my diaphragm pump stall or run slowly?
Insufficient air delivery, exhaust restrictions, icing, valve problems, or excessive liquid-side resistance may contribute. Review air and liquid conditions together.
Why does an AODD pump produce pulsation?
The diaphragms discharge in alternating strokes. A properly selected pulsation dampener and suitable piping may help when the process needs smoother flow.
What determines diaphragm and check-valve material selection?
Chemical compatibility, temperature, abrasion, flexibility, and operating duty all matter. The correct body material does not guarantee that the diaphragms, balls, and seals are suitable.
What does liquid at the air exhaust indicate?
It can indicate diaphragm failure. Follow site isolation procedures and arrange inspection; exhaust routing and leak detection should be considered when handling fluids that require containment.
How should an AODD pump be maintained?
Follow model-specific procedures for diaphragms, check valves, air valves, and fasteners. Base inspection frequency on service history and duty, and use parts matched to the exact configuration.
How can I get local support for Unibloc AODD Pumps?
Contact Process & Power at (901) 362-5500 with your location, equipment identification, and application or service concern. The team can review selection, parts, and service options for your needs.
What should I send when requesting a quote?
Include the required duty, fluid or process details, operating conditions, utilities, and installation dimensions. For existing equipment, add nameplate photos, model and serial numbers, and a description of the problem or planned change.