Airtac GAF Filter GAF300C15J
The AirTAC Airtac GAF Filter GAF300C15J is a genuine compressed-air filter. Its diversion structure spins the air to separate liquid water and trap solid particles down to 40 µm, protecting downstream valves and tools. It has 1/2" ports and a 60 cc drain bowl. It is a filter only — it does not regulate or set pressure.
- TypeAir filter
- Port size1/2"
- Filtering grade40 µm
- Pressure range0.15 - 0.9 MPa
- Bowl materialMetal
- Drainsemi-auto + manual
- Drain bowl60 cc
- Weight360 g
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac GAF Filter GAF300C15J
The GAF300C15J is a filter-only unit that spins incoming air to throw liquid water and solid particles into a 60 cc metal drain bowl, while the HDPE core traps fine grain. It protects downstream valves and tools from contamination, but it does not regulate pressure and has no gauge.
This model uses a 1/2in port and a 40 um element, with a metal bowl and both semi-auto and manual drains fitted. The metal construction suits demanding environments, though compatibility for aggressive surroundings should be confirmed with the datasheet.
Airtac GAF Filter GAF300C15J Technical Specifications
| Model | Airtac GAF Filter GAF300C15J |
|---|---|
| Series | GAF300 air filter |
| Port size | 1/2" (PT thread) |
| Filtering grade | 40 µm |
| Pressure range | 0.15 - 0.9 MPa (20 - 130 psi) |
| Bowl material | Metal |
| Drain type | Semi-auto drain + manual drain |
| Bracket | Not included (J) |
| Fluid | Air |
|---|---|
| Proof pressure | 1.5 MPa (215 psi) |
| Temperature range | -5 to +70 °C (unfreeze) |
| Capacity of drain bowl | 60 cc |
| Element | HDPE filter core |
| Weight | 360 g |
Specifications follow the official AirTAC GAF catalogue (pages 225-226). Air must not freeze in the unit. This is a filter only — it separates water and solid particles but does not set or hold a downstream pressure. To regulate pressure as well, use the matching GAFR300 filter-regulator.
Model Code: Airtac GAF Filter GAF300C15J
| GAF300 | GA300 series air filter — sets the port range, drain-bowl capacity and weight. |
|---|---|
| C | Bowl material: Metal. Available on this body: PC (blank), Metal (C), Nylon (N). |
| 15 | Port size 1/2". This body offers 08 = 1/4", 10 = 3/8", 15 = 1/2". |
| (blank) | Drain: Semi-auto drain + manual drain. |
| J | No bracket (J) — supplied without the mounting bracket. |
| (blank) | Filtering grade 40 µm. |
| (blank) | PT port thread. |
A GAF has no regulator and no pressure gauge — there is no type, gauge or reflux code. Need to regulate pressure too? The matching GAFR300-15 is the same filter with a built-in regulator.
Size Class & Flow Envelope
- GAF2001/8"-1/4" · 3000 L/min
- GAF3001/4"-1/2" · 6000 L/min
- GAF4003/8"-1/2" · 8000 L/min
- GAF5003/4" · 9000 L/min
- GAF6003/4"-1" · 12000 L/min
Figures are the end of the flow curve plotted in the AirTAC catalogue — a sizing envelope for comparing bodies, not a rated flow. Read the catalogue curve for a real duty point. A filter this size drops less pressure at flow than the same-body GAFR filter-regulator, so match it to your peak demand.
| This model | GAF300 · 1/2" · curve to 6000 L/min |
|---|---|
| One size down | GAF200 |
| One size up | GAF400 (curve to 8000 L/min) |
| Add regulation | GAFR300-15 (filter + regulator) |
Where the Airtac GAF Filter GAF300C15J Is Used
Machine Tool Protection
Feed a 1/2in line to a CNC coolant valve or precision spindle air system, where the 40 um element stops scale and water droplets from scoring moving parts.
Assembly Station Supply
Protect pneumatic screwdrivers and presses on a bench assembly line, with the metal bowl resisting knocks in a busy workshop environment.
Dusty Plant Air
Use on a ring main branch feeding a stamping press or welding cell, where the semi-auto drain handles frequent condensate from humid summer air.
Is the Airtac GAF Filter GAF300C15J the Right Filter?
Choose the GAF300 body for 1/4in to 1/2in lines, with the 1/2in port here giving a higher flow envelope than the GAF200's 3000 L/min curve. The metal bowl is a build choice, not a performance upgrade, and the J code means no bracket is included, so plan for panel mounting or an existing support. The 40 um element handles general shop air, while the semi-auto and manual drains let you control condensate removal. For pressure control, pair this with a GAR regulator or step up to the GAFR300-15 filter-regulator. The 1.5 MPa proof pressure provides a 1.67x margin over the 0.9 MPa working maximum.
Quick checklist
- ✓ Body size for your peak flow (1/2" here)
- ✓ Element 40 µm (general) or 5 µm (fine)
- ✓ Bowl material: PC (blank), Metal (C), Nylon (N)
- ✓ Drain: semi-auto + manual, or automatic
- ✓ Bracket kept or removed (J)
- ✓ Need pressure control too? Use GAFR300
Installation & Maintenance Notes
- check Install with the airflow arrow: IN to OUT, bowl accessible.
- check Place the filter FIRST in the air-prep train, ahead of any regulator or lubricator.
- check Keep pressure at or below the 1.5 MPa (215 psi) proof limit.
- check Drain condensate before the 60 cc bowl fills.
- check Keep the unit above freezing (-5 to +70 °C, unfreeze).
- check Support the 360 g unit on its bracket, not on the tubing.
This is a filter only — it removes water and solid particles but adds no pressure control and no lubrication. Add a GAR regulator, a GAL lubricator, or step up to the GAFR300-15 filter-regulator as your air-prep needs grow.
Airtac GAF Filter GAF300C15J FAQ
The GAF300C15J is a 40 um air filter with a 1/2in port, a 60 cc metal drain bowl, and a weight of 360 g. Its working pressure range is 0.15-0.9 MPa (20-130 psi), with a proof pressure of 1.5 MPa (215 psi). The temperature range is -5 to 70 C, and the flow curve is plotted to 6000 L/min.
The J in the model code means the mounting bracket is omitted. This suits installations where the filter mounts to a panel, a machine frame, or an existing bracket system. If you need the standard bracket, order the GAF300C15 instead.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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Most inquiries answered within 7-8 hours.
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