Airtac GAFR Adjustable Filter Regulator GAFR40015LJW
The AirTAC Airtac GAFR Adjustable Filter Regulator GAFR40015LJW is a genuine two-in-one filter & regulator — a diversion-type water/particulate filter and a balanced pressure regulator built into ONE body. It has 1/2" ports, a 5 µm filter element and regulates 0.15 - 0.4 MPa (20 - 58 psi). It has no lubricator, so it adds no oil to the airflow.
- TypeFilter & regulator
- Port size1/2"
- Pressure range0.15 - 0.4 MPa (20 - 58 psi)
- Filtering grade5 µm
- Bowl materialPC
- Drainsemi-auto + manual
- Pressure gaugeCircular, MPa / psi
- Weight880 g
About the Airtac GAFR Adjustable Filter Regulator GAFR40015LJW
The GAFR40015LJW is a filter and regulator combined into a single body, handling both filtration and pressure control without needing separate components. This 1/2in port model operates in the lower pressure band of 0.15-0.4 MPa (20-58 psi) and comes with a 5 um element for finer particle removal.
The diversion structure inside spins the incoming air to separate liquid water and solid debris into the 100 cc condensate bowl, while the balanced regulator maintains a steady outlet pressure. Weighing 880 g, this unit requires proper panel mounting since it is too heavy for tubing support alone, and it ships without a bracket for installations using existing hardware.
Airtac GAFR Adjustable Filter Regulator GAFR40015LJW Technical Specifications
| Model | Airtac GAFR Adjustable Filter Regulator GAFR40015LJW |
|---|---|
| Series | GAFR400 filter & regulator |
| Port size | 1/2" (PT thread) |
| Filtering grade | 5 µm |
| Pressure range | 0.15 - 0.4 MPa (20 - 58 psi) |
| Type | Lower pressure |
| Bowl material | PC |
| Drain type | Semi-auto drain + manual drain |
| Fluid | Air |
|---|---|
| Max. pressure | 1.0 MPa (145 psi) |
| Proof pressure | 1.5 MPa (215 psi) |
| Temperature range | -5 to +70 °C (unfreeze) |
| Capacity of drain bowl | 100 cc |
| Bracket | Not included (J) |
| Weight | 880 g |
Specifications follow the official AirTAC GAFR catalogue (pages 235-236). Air must not freeze in the unit. The fitted circular gauge reads in MPa / psi, set by the PT thread code. This unit filters and regulates only; it does not add lubrication.
Model Code: Airtac GAFR Adjustable Filter Regulator GAFR40015LJW
| GAFR400 | GA400 series filter & regulator — sets the port range, drain-bowl capacity and weight. |
|---|---|
| (blank) | Bowl material: PC. Available on this body: PC (blank), Metal (C), Nylon (N). |
| 15 | Port size 1/2". This body offers 10 = 3/8", 15 = 1/2". |
| (blank) | Drain: Semi-auto drain + manual drain. |
| L | Lower pressure type — 0.15 - 0.4 MPa (20 - 58 psi). This body offers Standard (S) or Lower pressure (L). |
| J | No bracket (J) — supplied without the mounting bracket. |
| (blank) | Circular pressure gauge fitted. |
| W | Filtering grade 5 µm. |
| (blank) | PT thread; gauge scale MPa / psi. |
| (blank) | No reverse-flow valve. |
The filter and the regulator are ONE body here — there is no separate GAF filter or GAR regulator part to assemble. Need lubrication downstream too? Add a lubricator by ordering the matching GAFC400-15 F.R.L. combination instead.
Size Class & Flow Envelope
- GAFR2001/8"-1/4" · 2000 L/min
- GAFR3001/4"-1/2" · 3500 L/min
- GAFR4003/8"-1/2" · 7000 L/min
- GAFR5003/4" · 8000 L/min
- GAFR6003/4"-1" · 12000 L/min
Figures are the end of the flow curve plotted in the AirTAC catalogue at 0.7 MPa inlet pressure — a sizing envelope for comparing bodies, not a rated flow. Read the catalogue curve for a real duty point. Outlet pressure falls as flow rises, so size a body with headroom above your peak demand.
| This model | GAFR400 · 1/2" · curve to 7000 L/min |
|---|---|
| One size down | GAFR300 |
| One size up | GAFR500 (curve to 8000 L/min) |
| Add a lubricator | GAFC400-15 (F.R.L. combination) |
Where the Airtac GAFR Adjustable Filter Regulator GAFR40015LJW Is Used
Precision valve control
Feed a bank of precision pneumatic valves on a machining center with the 5 um element filtering out fine particles that could clog sensitive orifices.
Assembly station air
Supply filtered, regulated air to multiple pneumatic screwdrivers on an assembly line, with the 100 cc bowl handling condensate from humid plant air.
Instrument air feed
Protect laboratory instruments or gauges from particulates and pressure fluctuations with the lower 0.4 MPa range suited for sensitive measurement equipment.
Is the Airtac GAFR Adjustable Filter Regulator GAFR40015LJW the Right Air-Prep Unit?
Choose the GAFR400 body when you need 1/2in ports and a 100 cc drain bowl, stepping up from the GAFR300's 60 cc bowl for longer intervals between draining. The L type limits regulation to 0.15-0.4 MPa, so verify your system never requires more than 0.4 MPa before selecting this variant. The 5 um element traps finer particles than the standard 40 um, making it suitable for precision equipment but requiring more frequent element changes. This model includes the circular gauge with MPa/psi scale and uses a semi-auto plus manual drain, giving you both automatic condensate release and manual override. The J code means no mounting bracket is included, so plan for panel mounting or an existing bracket solution. If your line needs oil downstream, order the matching GAFC400-15 combination instead. The 1.0 MPa max supply leaves about 0.6 MPa above the 0.4 MPa top of the range, so you have ample inlet pressure margin for stable regulation.
Quick checklist
- ✓ Body size for your peak flow (1/2" here)
- ✓ Standard 0.9 MPa or lower-pressure 0.4 MPa
- ✓ Bowl material: PC (blank), Metal (C), Nylon (N)
- ✓ Drain: semi-auto + manual, or automatic
- ✓ Element 40 µm or 5 µm
- ✓ Bracket kept or removed (J); add a lubricator = GAFC
Installation & Maintenance Notes
- check Install with the airflow arrow: IN to OUT, gauge/knob accessible.
- check Keep inlet pressure at or below 1.0 MPa (145 psi).
- check Set pressure with the pressed-in self-locking knob; pull to adjust, press to lock.
- check Drain condensate before the 100 cc bowl fills.
- check Keep the unit above freezing (-5 to +70 °C, unfreeze).
- check Support the 880 g unit on its bracket, not on the tubing.
This is a filter and regulator only — it delivers filtered, pressure-set air with no added oil. If a downstream tool needs lubrication, add a separate lubricator or order the GAFC400-15 combination; do not expect an oil mist from this unit.
Airtac GAFR Adjustable Filter Regulator GAFR40015LJW FAQ
This filter & regulator has a 1/2in port, operates at 0.15-0.4 MPa (20-58 psi), with a maximum pressure of 1.0 MPa (145 psi) and proof pressure of 1.5 MPa (215 psi). Temperature range is -5 to 70 C, drain bowl capacity is 100 cc, and the unit weighs 880 g. It comes with a 5 um element and a circular gauge.
The J code in GAFR40015LJW means the mounting bracket is omitted from the package. This suits installations where the unit mounts directly to a panel or uses an existing bracket from a previous unit. The 880 g weight means you should not support it from the tubing alone.
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