Airtac GAF Filter GAF300C15AJ
The AirTAC Airtac GAF Filter GAF300C15AJ 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
- Drainautomatic
- 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 GAF300C15AJ
The GAF300C15AJ is a filter-only unit from AirTAC that spins incoming air to throw liquid water and solid particles into a 60 cc metal bowl, while the HDPE core traps fine grain. It has no pressure regulator and no gauge, so it cleans the air but never sets or controls pressure.
This model uses a 1/2in port, a 40 um element, and an automatic drain that clears condensate without manual attention. The metal bowl suits demanding shop environments, and the 360 g body needs a proper panel or frame mount rather than support from the tubing.
Airtac GAF Filter GAF300C15AJ Technical Specifications
| Model | Airtac GAF Filter GAF300C15AJ |
|---|---|
| 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 | Automatic 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 GAF300C15AJ
| 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". |
| A | Drain: Automatic 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 GAF300C15AJ Is Used
Machine tool air prep
Feeds a 1/2in line to a CNC lathe or milling machine, removing water and grit before they reach precision spindles and tool changers.
Assembly station header
Supplies a bank of pneumatic screwdrivers and presses on a final assembly line, with the automatic drain keeping the bowl clear during long shifts.
Test rig air supply
Protects a laboratory test bench with multiple valves and cylinders, where the 40 um element handles general workshop air and the metal bowl resists knocks.
Is the Airtac GAF Filter GAF300C15AJ the Right Filter?
Choose the GAF300 body when you need a 1/2in port with a 60 cc drain bowl and a 6000 L/min flow envelope; step down to the GAF200 for lighter lines or up to the GAF400 for a 100 cc bowl and an 8000 L/min curve. The metal bowl is a build choice for rough surroundings, while the automatic drain handles wet or unattended lines, and the J code means no bracket is included. Match the PT thread to your fittings, and if you also need a set pressure, use the matching GAFR300-15 filter-regulator instead. The 1.5 MPa proof pressure gives about a 1.67x margin over the 0.9 MPa top of the working range.
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 GAF300C15AJ FAQ
This filter-only unit has a 40 um HDPE element, a working pressure range of 0.15-0.9 MPa (20-130 psi), a proof pressure of 1.5 MPa (215 psi), and a temperature range of -5 to 70 C. It uses a 60 cc metal drain bowl and weighs 360 g, with a flow curve plotted to 6000 L/min.
The A code means an automatic drain that expels accumulated condensate without manual intervention, ideal for wet lines or unattended operation. This model also has a metal bowl and no mounting bracket, so you must provide your own panel mount or existing bracket.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC Air-Preparation Units
Request a Quote for Airtac GAF Filter GAF300C15AJ
Send us the quantity, thread type (PT / G / NPT) and destination. We confirm price, stock and lead time — usually within 7-8 hours.