1/2 3-STAGE AIR CLEANING FILTER

What is the Iwata 1/2 3-Stage Air Cleaning Filter and why choose it?

The Iwata 1/2 3-Stage Air Cleaning Filter is a professional air treatment system designed to deliver clean, dry and oil-free compressed air to spray guns and other pneumatic tools. Using three filtration stages (pre-filter, coalescing filter and activated carbon), it removes solid particles, water, oil aerosols and odours to help achieve high-quality paint finishes and protect equipment. Its robust metal construction with anti-corrosion treatment and practical wall mounting make it suitable for body shops, industrial workshops and professional painting environments.

Main features

• Three-stage filtration: pre-filter (3 μ), coalescing filter (0.01 μ) and activated carbon stage for thorough air cleaning.
• High filtration efficiency: 99 % efficiency for the 3 μ pre-filter and 99.99 % for the 0.01 μ coalescing filter (data based on distributor description, not independently verified).
• Integrated pressure regulator: adjustable from 0 to 8.5 bar, with pressure gauge from 0 to 10 bar for precise control of working pressure.
• 1/2" F inlet valve: allows disassembly and replacement of filter cartridges without having to stop the compressor.
• Twin 1/4" M outlets: two air outlets with shut-off valves for supplying up to 2 or 3 spray guns from the same filter unit.
• Semi-automatic drains: on the pre-filter and coalescing filter to remove condensate and maintain air quality.
• Activated carbon stage: helps reduce oil vapours and odours to obtain particularly clean air for high-finish applications.
• Wall mounting plate: with 4 mounting holes for secure and convenient installation.
• Metal body and bowls: external metal coating and anti-corrosion treatment for durability in workshop environments.
• Designed for multiple spray guns: suitable for use with 2 or 3 guns depending on the application (information based on manufacturer/distributor sources).

Technical specifications

• Brand: Iwata / Anest Iwata (naming may vary by market).
• Model description: 1/2 3-Stage Air Cleaning Filter (also described as air filter regulator 1/2"F tri-stage in some catalogues).
• Inlet connection: 1/2" F air supply valve.
• Outlet connections: 2 x 1/4" M outlets with shut-off valve.
• Filtration stages:
• Stage 1: 3 μ pre-filter, approx. 99 % filtration efficiency, semi-automatic exhaust (not independently verified).
• Stage 2: 0.01 μ coalescing filter, approx. 99.99 % filtration efficiency, semi-automatic exhaust (not independently verified).
• Stage 3: activated carbon filter with separation degree for fine impurities and odours.
• Regulator range: 0 to 8.5 bar (adjustable).
• Pressure gauge scale: 0 to 10 bar.
• Construction: metal body and filter cup with anti-corrosion treatment.
• Installation: wall mounting plate with 4 holes.
• Recommended use: up to 2 or 3 spray guns (depending on consumption and application).

Some values above are taken from distributor descriptions of this Iwata 1/2 3-stage filter and similar tri-stage filter regulators and should be considered indicative, not a substitute for the official technical data sheet.

Applications and use cases

• Automotive refinishing: feeding spray guns in car body shops where a clean, dry air supply is essential to avoid defects such as fisheyes, blushing or dust inclusions in paint and clear coats.
• Industrial painting: small and medium industrial painting lines, machinery and metal structures, where multi-stage filtration increases coating reliability and finish consistency.
• Wood finishing: furniture and carpentry workshops using solvent or water-based systems that demand low contamination and stable air pressure.
• Compressed air networks: as a terminal air treatment point in compressed air distribution systems, just before sensitive equipment or finishing stations.
• Protection of pneumatic tools: reduction of water and oil in the air line helps extend the service life of spray guns, valves, regulators and other precision equipment.
• Detailing and custom painting: applications such as custom automotive work, motorcycle tanks, helmets and similar, where surface quality and colour accuracy are a priority.

For detailed performance limits (maximum flow rate, operating temperature, etc.), it is recommended to consult the official Iwata technical data sheet for this exact model.

FAQ – Frequently asked questions

1. What does “3-stage” mean in this filter?

It refers to three separate filtration stages: a 3 μ pre-filter for larger particles and water, a 0.01 μ coalescing filter for very fine particles and oil aerosols, and an activated carbon stage to help remove remaining vapours and odours.

2. What thread size does the air inlet have?

The air inlet is a 1/2" female connection, which is standard for many workshop air lines. The unit also provides two 1/4" male outlets with shut-off valves for connecting spray guns or secondary regulators.

3. Is this filter suitable for automotive spray painting?

Yes, it is specifically designed for applications that require high air quality, such as automotive refinishing and industrial painting, where moisture and oil in the air line can negatively affect the finish.

4. Can I use more than one spray gun at the same time?

The filter is described as usable with 2 or 3 guns, depending on air consumption and the compressor’s capacity. For simultaneous use of several guns at high flow, the available air volume from the compressor must be checked.

5. Does the unit include a pressure regulator?

Yes. It integrates a regulator adjustable from 0 to 8.5 bar with a pressure gauge scaled up to 10 bar, allowing you to set and monitor the working pressure at the outlet.

6. How are condensate and captured liquids removed?

The pre-filter and the coalescing filter are equipped with semi-automatic drains that periodically release accumulated water and oil, helping to maintain constant filtration performance.

7. Is this the same as all Iwata 3-stage filters?

Different Iwata tri-stage filters may share similar design and performance but can have different codes or minor specification changes depending on the catalogue and market. For exact compatibility and detailed limits, the official manufacturer data sheet for this specific model must be checked.

8. Does it require special maintenance?

Regular inspection and replacement of filter cartridges according to usage and manufacturer recommendations is necessary to maintain filtration performance. Specific maintenance intervals should be taken from the official technical documentation.

9. Can this filter be installed directly at the compressor outlet?

It can be installed near the compressor or closer to the paint booth/working area. Installation point depends on the layout of the air network; in many cases, it is used as a terminal filter near the spray guns to ensure the best air quality at the point of use.

10. Are the filtration efficiencies mentioned officially certified?

The listed efficiencies (99 % at 3 μ and 99.99 % at 0.01 μ) come from distributor information associated with this model and similar Anest Iwata units and should be treated as indicative values. For certified performance data, the official Iwata technical data sheet must be consulted.

Section 14 – Transport information

This product is a fixed compressed air filtration unit made of metal components and filter cartridges. In normal commercial transport as a piece of equipment, it is not described as a hazardous material, since it does not contain pressurised gas or chemicals in use. However, packaging and labelling during transport should protect the unit from impacts, moisture and contamination.

If the unit is shipped with installed filter cartridges, these are usually dry at the time of delivery. Any specific transport classification, restrictions or requirements (e.g. for pallets, stacking limits, or special handling) must be verified in the official documentation and with the transport provider.

Section 8 – Individual protection measures

As an air filtration device, the Iwata 1/2 3-Stage Air Cleaning Filter itself does not generate hazardous substances under normal operating conditions. Nevertheless, it is part of a compressed air system and should be handled following general workshop safety practices:

• Eye protection: use safety glasses when connecting, disconnecting or servicing the unit to protect against accidental discharge of pressurised air or particles.
• Hand protection: wear appropriate work gloves when installing or replacing filter bowls and cartridges to prevent cuts or abrasions on metal parts.
• Hearing protection: in noisy compressor rooms or paint shops, use hearing protection according to workplace regulations, especially when working close to running compressors.
• Respiratory protection: if work is done in areas with paint overspray, solvents or dust, use suitable respirators as required by local occupational safety standards; the filter only conditions compressed air, it does not protect the operator’s breathing zone.
• General safety: always depressurise the air line before performing maintenance, replacing cartridges or manipulating connections.

These indications are general safety recommendations based on typical use of compressed air filtration systems and do not replace the official safety instructions of Iwata or the specific risk assessment of the workplace.

*Contenido generado por IA