Airtac GAFR Adjustable Filter Regulator GAFR40010ALJW
The AirTAC Airtac GAFR Adjustable Filter Regulator GAFR40010ALJW 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 3/8" 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 size3/8"
- Pressure range0.15 - 0.4 MPa (20 - 58 psi)
- Filtering grade5 µm
- Bowl materialPC
- Drainautomatic
- Pressure gaugeCircular, MPa / psi
- Weight880 g
About the Airtac GAFR Adjustable Filter Regulator GAFR40010ALJW
The GAFR40010ALJW is a filter and regulator combined in a single body, so it cleans incoming air and stabilizes outlet pressure without needing separate units. This model has a 3/8in port, a lower-pressure range of 0.15-0.4 MPa (20-58 psi), and a 5 um element for finer filtration.
The automatic drain clears condensate without manual attention, and the 100 cc bowl holds a substantial amount of water. The circular gauge with MPa/psi scale is fitted, and the unit weighs 880 g, indicating a robust build for medium-duty lines.
Airtac GAFR Adjustable Filter Regulator GAFR40010ALJW Technical Specifications
| Model | Airtac GAFR Adjustable Filter Regulator GAFR40010ALJW |
|---|---|
| Series | GAFR400 filter & regulator |
| Port size | 3/8" (PT thread) |
| Filtering grade | 5 µm |
| Pressure range | 0.15 - 0.4 MPa (20 - 58 psi) |
| Type | Lower pressure |
| Bowl material | PC |
| Drain type | Automatic 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 GAFR40010ALJW
| 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). |
| 10 | Port size 3/8". This body offers 10 = 3/8", 15 = 1/2". |
| A | Drain: Automatic 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 GAFC400-10 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 · 3/8" · curve to 7000 L/min |
|---|---|
| One size down | GAFR300 |
| One size up | GAFR500 (curve to 8000 L/min) |
| Add a lubricator | GAFC400-10 (F.R.L. combination) |
Where the Airtac GAFR Adjustable Filter Regulator GAFR40010ALJW Is Used
Precision valve control
Feed a bank of precision pneumatic valves that need clean, regulated air at a consistent lower pressure. The 5 um element protects sensitive internals from fine particulates.
Machine tool circuits
Supply a medium-sized machine tool's clamping circuit with filtered air at a stable 0.15-0.4 MPa. The automatic drain keeps the bowl from filling during long production runs.
Test bench setup
Use on a test bench where a regulated lower pressure is required for calibration or component testing. The 100 cc bowl and 880 g mass suit a fixed installation.
Is the Airtac GAFR Adjustable Filter Regulator GAFR40010ALJW the Right Air-Prep Unit?
Choose the GAFR400 body if you need 3/8in ports and a 100 cc drain bowl; it is smaller than the GAFR500 with its 108 cc bowl and 8000 L/min flow envelope at 0.7 MPa inlet. The L-type pressure range tops out at 0.4 MPa, so confirm your system never needs more than that; the standard S type goes to 0.9 MPa if you need more headroom. The 5 um element traps finer particles than the standard 40 um, but requires more frequent service. The automatic drain (A) suits unattended operation, while the J code means no bracket is included, so plan for panel mounting or an existing bracket. The PT thread gives an MPa/psi gauge scale, and the gauge is fitted. If you need lubrication downstream, order the GAFC400-10 combination instead. 1.0 MPa max supply leaves about 0.6 MPa above the 0.4 MPa top of the range.
Quick checklist
- ✓ Body size for your peak flow (3/8" 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 GAFC400-10 combination; do not expect an oil mist from this unit.
Airtac GAFR Adjustable Filter Regulator GAFR40010ALJW FAQ
The pressure range is 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). Operating temperature is -5 to 70 C. The drain bowl holds 100 cc, and the unit weighs 880 g.
The J code means the mounting bracket is not included. You will need to use an existing bracket or panel-mount the unit. The gauge is still fitted, and the thread is PT.
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