Electricity-free operation, safe for ATEX environments
Because it runs on compressed air, it carries no spark risk; used safely in facilities classified for paint, solvent and explosive atmospheres.
Product group · Flow Transfer Products
Air-Operated Diaphragm Pumps
Air-operated diaphragm pumps (AODD) are positive-displacement pumps driven by compressed air, needing no electricity and tolerant of dry running. They are preferred for transferring corrosive, viscous or particle-laden fluids, with the advantage of safe use in explosive atmospheres; supplied with plastic (PP/PVDF) or metallic (aluminum/stainless) casing options.
Flow rate0.5 – 80 m³/h
Air supply pressure2 – 8.5 bar
Dry runningTolerant
CasingPP / PVDF / aluminum / stainless
Why it matters
What does an air-operated diaphragm pump do?
It gives safe transfer without electricity, in explosive atmospheres and with corrosive fluids.
Tolerant of dry running
The pump can keep running undamaged even when the tank is empty or the fluid is interrupted; no automatic shut-off is needed.
Reliable with corrosive and viscous fluids
With large flow passages and particle tolerance, it carries sludge, paint and corrosive chemicals without clogging.
Easy maintenance, few moving parts
Apart from the diaphragm and valve balls, there are no wearing parts; maintenance can be done quickly without special equipment.
Types
Sub-types of air-operated diaphragm pumps
All three run on compressed air; what sets them apart is the casing material and resistance level.
Standard AODD pump
The standard solution for general-purpose transfer of water, oil and moderately corrosive fluids.
- Wide fluid compatibility
- Easy installation
- An economical solution
Metallic-casing (aluminum/stainless) AODD pump
Preferred on process lines needing higher pressure and wear resistance, for the mechanical strength of its metallic casing.
- High mechanical strength
- High pressure capacity
- Heavy-duty conditions
Plastic-casing (PP/PVDF) AODD pump
Offers high chemical resistance against acids and corrosive chemicals; used on chemical storage and filling lines.
- High chemical resistance
- Lightweight construction
- Suited to acid/base transfer
Selection criteria
What data determines the right air-operated diaphragm pump?
Without the first two points, selection cannot be made. The rest determine the material and diaphragm type.
ParameterWhy it mattersWhat we need from you
Flow rate
Calculated from the line's demand and the air-supply capacity.
m³/h
Suction lift
The suction distance from the pump to the tank level.
m
Fluid chemical compatibility
Determines the casing and diaphragm material.
Chemical type
Viscosity/particle content
The flow passage size and valve type are chosen based on this.
cSt / particle size
Air-supply capacity
The existing compressor's pressure and flow rate.
bar + Nm³/min
Area classification (ATEX requirement)
A certified model is needed if the area has an explosive-atmosphere classification.
ATEX yes/no
For a quote, having the following is enough
It's fine if you don't have all of it. We'll fill in the gaps together with you.
Create a quote request- Flow rate and suction lift
- The fluid's chemical content and viscosity
- Solid particle size (if any)
- The existing air-supply pressure/flow rate
- Whether ATEX certification is needed
- The existing pump's nameplate data (if it's a replacement)
FAQ
Questions from the field
The questions we hear most often when quoting air-operated diaphragm pumps.
Why is an electricity-free pump preferred?
Because it carries no spark risk, it can be used safely in facilities classified for paint, solvent and other explosive atmospheres, without the extra certification an electric pump would need.
Does dry running damage the pump?
No, this is one of the key advantages of AODD pumps; the pump stops when the tank runs empty or the air supply is cut, and resumes working without issue once the fluid returns.
How is the diaphragm material selected?
Depending on the fluid's chemical compatibility and temperature, a diaphragm is chosen from options such as NBR, EPDM, Viton (FKM) or PTFE-lined.
How much air does it consume?
It varies with the pump's flow rate and line pressure; compressor capacity is also a limiting factor in pump selection.
Do you only serve Istanbul?
No. While our office is on Istanbul's Anatolian side (Ataşehir), we supply and ship across Istanbul's European side, the surrounding provinces and the Marmara region, and Turkey as a whole — covering your equipment end to end, from a single source.
Next step
Let's clarify your requirement together
Share the type of fluid and your existing air-supply capacity, and let's determine together the right AODD pump for your line.
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