FLUIMAC air operated double diaphragm pumps have long been recognized as the most flexible pumps of the industry for handling difficult liquids at relatively low pressures and flows. The range of applications is virtually limitless.
FLUIMAC AODD pumps come in a lot of sizes, from 1/4" to 3", and a lot of choices of materials of construction: PP+VTR, PP+CF, PVDF+CF, POM+VTR, POM+CF, ALUMINUM and SS AISI 316. Almost every type of liquid from highly corrosive acids, alkaline fluids, paints, adhesives, fluids with high viscosity up to 50.000 CPS, food and drink products can be pumped.
To select the right FLUIMAC pump for your application, the following factors should be considered to achieve economy of operation, long pump life, and minimal maintenance costs:
- The nature of the medium to be pumped, its viscosity, and the solids content;
- Pumping capacity in relation to the desired output;
- Suction and pressure conditions;
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The operation of a double diaphragm pump, or pneumatic diaphragm pump, is both simple and effective: they are pneumatic pumps suitable for transferring fluids with reciprocating motion.
The pneumatic diaphragm pumps are equipped with two opposing pumping chambers, hermetically divided into two, one in contact with the compressed air and the other in contact with the pumped fluid.
The diaphragms, placed between two pumping chambers and activated by the pneumatic motor, and the valves, designed to ensure the total passage of the fluid both inlet and outlet, are the only parts in contact with the fluid.
Air operated double diaphragm pumps, or air operated diaphragm pumps, are designed and manufactured to pump a wide range of fluids even with high viscosities and with suspended solids.
They can also be used for heavy-duty applications such as environments with high humidity or potentially explosive atmospheres thanks to the ATEX Directive with which they are equipped.
Unlike other types of pumps, the diaphragm pump for liquids has no limits of use, also adapting to dry operations, to mix fluids, in self-priming and submerged.
| PUMP TYPE | AODD | CENTRIFUGAL | LOBE | GEAR | SCREW | PERISTALIC | PISTON |
|---|---|---|---|---|---|---|---|
 |  |  |  |  |  |  | |
| Variable Flow & Head Control | |||||||
| Deadhead Safoly | |||||||
| Dry-Running | |||||||
| Dry Solf-Priming | |||||||
| No Mechanical Alignment | |||||||
| No Eloctrical installation | |||||||
| Portability | |||||||
| Submorsible | |||||||
| Scalloss | |||||||
| Cavitation Tolerance | |||||||
| Low Shear & Degradation |
= Suitable = Limitations = Not Recommended
 |  |  |  |  |  |  |
| Pump installed below head (positive suction) | self priming pump installed above head (negative suction) | Pump installed above drum or tank | pump installed on hopper for high viscosity liquid | Submerged pump | Suspended | pump installed on a mobile unit |
|---|---|---|---|---|---|---|
| when it is necessary to empty completely the container | Pump initially works with dr column without problem | with special featuring pump | hopper's height treat the fluid. Air pressure has to be high. Suction tube has to be bigger than pump's size. | it is necessary to check the chemical compatibility | Special version with flooring feet also in the upper part for ceiling fixing | with a trolley of cart when pump must be often moved |
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