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Paint and coating production requires reliable fluid-transfer equipment capable of handling liquids with different viscosities, pigment loads and chemical compositions. During production, paint may also contain agglomerated particles, dried coating fragments or process contaminants that should be removed before filling, circulation or downstream processing.
For this application, OVELL supplied a batch of A20AATTA 2-inch air operated double diaphragm pumps. Each pump is combined with a stainless-steel bag filter and installed on a compact stainless-steel skid.
The complete package integrates paint transfer and inline filtration in one unit, helping users simplify installation, improve process consistency and protect downstream equipment.
👉 Learn more about our Air Operated Double Diaphragm Pumps for industrial fluid transfer applications.
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Batch of OVELL A20AATTA 2-inch aluminium AODD pumps with stainless-steel bag filters for paint transfer.
Caption：
OVELL A20AATTA 2-inch aluminium AODD pumps with PTFE diaphragms and stainless-steel bag filters, assembled for paint transfer and inline filtration.
Pump Model: OVELL A20AATTA
Pump Size: 2 inches
Pump Type: Air Operated Double Diaphragm Pump
Pump Housing: Aluminium alloy
Diaphragm Material: PTFE
Filtration Equipment: Stainless-steel bag filter
Installation: Stainless-steel skid-mounted assembly
Main Application: Paint and coating transfer and filtration
Each pump and filter is mounted on a stainless-steel base with adjustable feet, helping make the package easier to position, install and maintain.
The modular arrangement also allows the pump, filter, valves and air-control components to be delivered as one complete system.
An air operated double diaphragm pump, also commonly called an AODD pump, uses compressed air as its power source. The pneumatic drive is separated from the process liquid, making this pump principle suitable for many paint and coating duties.
Paint viscosity can vary significantly with formulation, temperature, pigment concentration and production stage.
An AODD pump can transfer both lower-viscosity coatings and thicker products. Flow can be adjusted through the compressed-air supply, allowing operators to match the transfer rate to the production process.
Paint-transfer processes often involve repeated start-stop cycles during batching, tank transfer, filtration and filling.
AODD pumps are well suited to this operating pattern and can be controlled through a manual valve, pneumatic control valve or automated system.
Excessive shear may affect certain coating formulations, especially products containing pigments, resins or sensitive additives.
The reciprocating diaphragm action provides comparatively gentle fluid transfer and can help reduce unnecessary agitation.
AODD pumps are frequently selected for drawing liquid from drums, tanks and process vessels.
Their self-priming capability gives users greater flexibility when positioning the pump beside or above the liquid source.
Paint may contain pigment particles or limited quantities of suspended solids.
The ball-valve construction used in many AODD pumps can accommodate these fluids, although the acceptable particle size depends on the pump configuration and operating conditions.
For more information about OVELL pump solutions, visit our diaphragm pump product range.
In this package, the AODD pump transfers paint into a stainless-steel bag-filter housing.
As the liquid passes through the selected filter bag, unwanted particles are retained inside the vessel, including:
Filtering paint before filling or downstream processing can improve product consistency and reduce the risk of nozzle, valve or pipeline blockage.
The filter-bag micron rating should be selected according to the paint formulation, required cleanliness and acceptable pressure loss.
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2-inch air operated double diaphragm pump and bag-filter skid for paint-industry filtration.
Caption：
Close-up view of the OVELL A20AATTA pump, stainless-steel bag filter, valves, air regulator and connecting pipework.
The A20AATTA pumps shown in this project use PTFE diaphragms.
PTFE is widely used in diaphragm pumps because of its broad chemical resistance and low surface adhesion. In paint applications, these properties can support reliable operation and easier cleaning.
Paint formulations differ considerably and may contain water, solvents, resins, hardeners, pigments or other additives.
Before final pump selection, chemical compatibility should therefore be checked for all wetted parts, including:
For solvent-based or aggressive coatings, material compatibility and site-safety requirements must be reviewed carefully.
The pump, filter and connecting pipework are preassembled on one base, reducing onsite assembly and simplifying commissioning.
The compact skid can be located near a mixing tank, production vessel, filling line or storage container.
Short connections between the pump and filter reduce unnecessary pipe runs and help create a cleaner installation.
The pump and filter remain accessible for inspection, diaphragm servicing and filter-bag replacement.
The removable top cover and lifting eye nuts support fast opening of the filter vessel.
The OVELL A20AATTA AODD pump and bag-filter system can be used for applications such as:
The final configuration should be selected according to flow rate, viscosity, solids content, solvent composition, required filtration accuracy and operating pressure.
The red air hoses visible in the installation supply compressed air to the pumps.
Air regulators and isolation valves allow each pump to be adjusted or stopped independently.
For stable operation, the compressed-air system should provide:
Where flammable liquids or solvent-based paints are involved, the complete installation must be assessed for static electricity, ventilation, grounding, hazardous-area classification and applicable local regulations.
By combining a 2-inch aluminium AODD pump, PTFE diaphragms and a stainless-steel bag filter, this OVELL package integrates fluid transfer and filtration in one compact assembly.
Key advantages include:
For paint manufacturers and coating processors, pump selection involves more than flow rate alone. The pump should be matched to liquid viscosity, chemical composition, solids content, filtration requirements and the operating environment.
OVELL can configure AODD pump and filtration packages according to specific process conditions, including pump material, diaphragm material, connection size, filter rating and skid arrangement.
Explore the complete OVELL Air Operated Double Diaphragm Pump range to find a suitable solution for your fluid-transfer application.
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