Flow Account
Determine the amount of transfer per hour or minute. Do not forget the viscosity correction factor.
Technical Guide
AODD Pump
Selection Guide
Step-by-step pump selection guide for flow rate, pressure, fluid properties and casing material selection.
Selection Criteria
5 Key Parameters for Choosing the Right Pump
A mistake in AODD pump selection means inefficient operation, premature wear or unexpected failure. To find the right pump, you need to evaluate five key parameters in sequence: flow rate, pressure, fluid properties, casing material and installation environment.
This guide explains each step with concrete examples and ensures that you know what to ask our technical team during the selection process.
- Step 1: Determine the required flow rate (lpm or m³/h)
- Step 2: System resistance and required pressure calculation
- Step 3: Fluid viscosity and particle size
- Step 4: Chemical compatibility and body material selection
- Step 5: ATEX requirement and installation environment
Selection Criteria
Considerations in Pump Selection
Pressure Loss
Calculate pipe length, elbow and valve losses and static head. The pump must meet this total pressure.
Fluid Analysis
Viscosity, specific gravity, pH, temperature and particle size directly determine the choice.
Material Compatibility
Select body (PP/PVDF/Al/SS) and diaphragm (PTFE/EPDM/NBR) according to the chemical content of the fluid.
Election Questions
Things to Consider When Choosing a Pump
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The pump piston diameter, not the connection size, determines the flow rate. Models with 1/4"-3/8" connection operate up to 16 lpm, 3/4"-1" models up to 57-160 lpm, 1½" models up to 400 lpm, 2" models up to 565 lpm, 3" models up to 894 lpm. After determining the required flow rate, select the relevant flow rate class.
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General rule of thumb: if the viscosity exceeds 500 cPs, take 70% of the catalog flow rate as a basis and choose a higher model. Above 2000 cPs it is recommended to consult our technical team.
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Air consumption (Nm³/h) of the AODD pump depends on the operating pressure and speed. It can be read from catalog graphs. It is recommended to leave a minimum 20% margin in air compressor selection.
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Pulse dampers are recommended for sensitive process lines (meter, pre-membrane filter). In standard transfer applications, pulsation is usually not a problem.