Airtac GAFR Adjustable Filter Regulator GAFR40010ALJ
The AirTAC Airtac GAFR Adjustable Filter Regulator GAFR40010ALJ 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 40 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 grade40 µm
- Bowl materialPC
- Drainautomatic
- Pressure gaugeCircular, MPa / psi
- Weight880 g
About the Airtac GAFR Adjustable Filter Regulator GAFR40010ALJ
The GAFR40010ALJ is a filter and regulator combined into a single body, so it cleans incoming air and sets a steady outlet pressure without needing separate components. This lower-pressure model runs from 0.15 to 0.4 MPa (20-58 psi) and uses a 40 um element to trap solid particles.
Its 100 cc condensate bowl collects separated water and debris, and the automatic drain clears it without manual attention. Weighing 880 g with a 3/8in port, this unit suits compact machine builds where space is tight and a single body saves rail width.
Airtac GAFR Adjustable Filter Regulator GAFR40010ALJ Technical Specifications
| Model | Airtac GAFR Adjustable Filter Regulator GAFR40010ALJ |
|---|---|
| Series | GAFR400 filter & regulator |
| Port size | 3/8" (PT thread) |
| Filtering grade | 40 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 GAFR40010ALJ
| 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. |
| (blank) | Filtering grade 40 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 GAFR40010ALJ Is Used
Precision jig clamping
Feed a single pneumatic jig or fixture where a stable 0.15-0.4 MPa output keeps clamping force consistent. The automatic drain removes condensate without interrupting production cycles.
Bench test rigs
Use on a test bench supplying air to gauges or small actuators. The fitted gauge shows the set pressure directly, and the lower range suits delicate adjustment tasks.
Compact machine stations
Mount on a small assembly station where space is limited. The single-body design reduces joints and the 880 g weight is manageable with a proper frame bracket.
Is the Airtac GAFR Adjustable Filter Regulator GAFR40010ALJ the Right Air-Prep Unit?
Choose the GAFR400 body when you need a 3/8in port and a 100 cc drain bowl, stepping up from the GAFR300's 60 cc bowl if your line sees more condensate. The L type limits output to 0.4 MPa, so confirm your system never needs more than that before selecting it. This model has an automatic drain for wet lines, a PC bowl, no mounting bracket (J), and a fitted circular gauge with an MPa/psi scale. If you need finer filtration, the W option swaps the 40 um element for 5 um, and the K code adds a reverse-flow valve. For lubrication downstream, order the matching GAFC400-10 combination instead. The 1.0 MPa max supply leaves about 0.6 MPa above the 0.4 MPa top of the range, so plan your inlet pressure accordingly.
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 GAFR40010ALJ FAQ
The pressure range is 0.15-0.4 MPa (20-58 psi), with a max 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. It has a 3/8in port and a 40 um element.
The J code omits the bracket for installations where the unit mounts directly to a panel or uses an existing bracket. If you need the standard bracket, order without the J option.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models usually ship in 3-4 days.
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