AI-304 1/4-Inch Inline Air Filter and Water/Oil Separator
A point-of-use air-line filter separator for buyers evaluating moisture and oil separation close to a pneumatic tool or spray gun. Review the connection, working-pressure range and drain method against your system before ordering.
Official product feature image
Why buyers consider the AI-304
Inspect the bowl visually
The transparent PC bowl makes the separator chamber visible during routine checks. Follow the site's product instructions and your maintenance procedure when inspecting or draining.
Manual push-button drain
The listed push-button drain provides a manual way to empty collected liquid. It is not an automatic drain; plan inspection and draining around actual shop conditions.
Inline point-of-use format
Use the compact separator format where a local filtration stage is needed near an air tool. Confirm that the specified pressure and connection match the intended line.
Performance boundary: An inline separator is one part of compressed-air preparation. It does not by itself guarantee contaminant-free air, prevent coating defects, or replace an appropriately sized upstream filter/dryer and regular system maintenance.
OEM / ODM, sample and private-label inquiry
For brand, distributor and importer inquiries, contact LEMATEC to discuss whether OEM/ODM, private-label, sample or packaging options are available for your project. Availability, customization scope, minimum order quantity and sample terms should be confirmed for the specific request.
Product details and applications
Transparent bowl and housing
The official listing identifies an aluminum-alloy body and transparent polycarbonate bowl. This image shows the assembly for product identification.
Push-button drain
The listed drain is manually operated. Check the product instructions and depressurize or isolate the air system as required by the applicable service procedure.
Where it may fit in an air line
LEMATEC lists the AI-304 for air-line filtration/separation in contexts including painting, sandblasting, woodworking and industrial use. Suitability depends on the air demand, required air quality and operating conditions of the actual tool and process.
Before purchase, confirm whether your application needs a regulator, a higher-capacity filter, a coalescing stage or a dryer in addition to this separator. AI-304 is not presented here as a pressure regulator or a complete compressed-air treatment system.
AI-304 technical specifications
| Model | AI-304 |
| Connection | 1/4-inch NPT air inlet / outlet (per LEMATEC product listing) |
| Operating pressure | 90–150 PSI |
| Maximum pressure | 200 PSI (maximum value listed; not described as a certification or safety rating) |
| Net weight | 118 g |
| Body material | Aluminum alloy |
| Bowl material | Transparent polycarbonate (PC) |
| Drain | Push-button manual drain |
Values above follow the current LEMATEC product listing. No flow-capacity, filtration-micron, pressure-drop or dew-point value is stated here; request those details if they are required by your specification.
Selection guide: separator or filter-regulator?
| Buyer requirement | What to evaluate | AI-304 fit |
|---|---|---|
| Local water/oil separation near a tool | Port compatibility, pressure range, installation location and maintenance access | Potential match; validate the system conditions |
| Adjust outlet pressure at the point of use | A regulator function and the required adjustment range | Do not assume AI-304 regulates pressure; consider a suitable regulator product |
| Defined flow rate or filtration grade | Published capacity, element rating and pressure drop at expected demand | Ask LEMATEC to confirm; these values are not stated in the cited listing |
| Paint or other moisture-sensitive process | Required air quality, upstream treatment, drainage and line maintenance | Use as a component only if the full air-treatment design meets process needs |
Compare with LEMATEC's air filter and dryer product range and discuss the intended configuration with the supplier.
Frequently asked questions
What thread connection is listed for the AI-304?
The current LEMATEC product listing specifies 1/4-inch NPT air inlet and outlet. Verify the thread standard and mating fittings required in your market.
What operating pressure is specified?
The listed operating pressure is 90–150 PSI, with a maximum pressure of 200 PSI. Use the product documentation and never exceed the stated limit.
Does the AI-304 regulate air pressure?
The product is listed as an inline air filter and water/oil separator, not as a pressure regulator. Select a separate compatible regulator if pressure adjustment is needed.
Is the drain automatic?
The supplied product information describes a push-button drain. Treat it as a manual drain and follow the relevant safe isolation and maintenance procedure.
Can it guarantee defect-free spray finishing?
No single separator should be presented as a guarantee against paint defects. Air quality also depends on compressor condition, upstream treatment, piping, drainage, filtration and process requirements.
What should a distributor include in an RFQ?
Include target quantity, market, required connection standard, working pressure, expected airflow, application, packaging or branding needs, and any requested flow or filtration data. Ask LEMATEC to confirm sample and customization availability.
About the Author: Vic Chen
Vic Chen works with LEMATEC's international pneumatic-tool and B2B product communication, connecting application requirements with practical sourcing and product information.
Request AI-304 product and sourcing details
Send your intended application, operating pressure, connection requirement, expected quantity and destination market so the team can review product fit and any project-specific OEM/ODM or sample options.
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