Airtac GAFR Adjustable Filter Regulator GAFR40010ALJN
The AirTAC Airtac GAFR Adjustable Filter Regulator GAFR40010ALJN 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 gaugeNot fitted
- Weight880 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 GAFR Adjustable Filter Regulator GAFR40010ALJN
The GAFR40010ALJN is a filter and pressure regulator combined in a single body, so it cleans incoming air and sets a steady outlet pressure without needing separate units. This model uses a 3/8in port, a 40 um element, and a lower-pressure range of 0.15-0.4 MPa (20-58 psi), with a 100 cc condensate bowl.
The automatic drain clears collected water without manual intervention, and the 880 g body requires a proper panel or frame mount rather than support from tubing. The balanced regulator mechanism holds the set pressure steady as supply varies, and the pressed-in self-locking knob resists drift from vibration.
Airtac GAFR Adjustable Filter Regulator GAFR40010ALJN Technical Specifications
| Model | Airtac GAFR Adjustable Filter Regulator GAFR40010ALJN |
|---|---|
| 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. No gauge is supplied with this model — the gauge connection on a GAFR400 is 1/4" if you add one. This unit filters and regulates only; it does not add lubrication.
Model Code: Airtac GAFR Adjustable Filter Regulator GAFR40010ALJN
| 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. |
| N | No pressure gauge; 1/4" gauge connection. |
| (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 GAFR40010ALJN Is Used
Precision pressure setting
Set a stable 0.3 MPa supply for a pneumatic clamping fixture on a machining center, where the lower range gives finer adjustment resolution.
Wet line automatic drain
Use on a paint booth air line with high humidity; the automatic drain clears condensate without daily manual checks.
Compact machine build
Mount directly on a machine frame using existing holes, saving rail width compared to separate filter and regulator units.
Is the Airtac GAFR Adjustable Filter Regulator GAFR40010ALJN the Right Air-Prep Unit?
Choose the GAFR400 body for a 3/8in port with a 100 cc drain bowl and a flow curve plotted to 7000 L/min at 0.7 MPa inlet, which is a step up from the GAFR300's 3500 L/min envelope. The L type limits regulation to 0.15-0.4 MPa (20-58 psi), so confirm your line never needs more than that. The automatic drain suits unattended or wet lines, while the omitted bracket (J) fits existing panel mounts. No gauge is supplied; the 1/4in gauge connection allows adding one later. The 40 um element is the standard grade, and the PT thread gives an MPa/psi gauge scale. If oil is needed downstream, order the matching GAFC400-10 combination instead. Max supply 1.0 MPa 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 GAFR40010ALJN FAQ
The GAFR40010ALJN is a filter & regulator with a 3/8in port, 40 um element, and lower pressure range of 0.15-0.4 MPa (20-58 psi). Maximum pressure is 1.0 MPa (145 psi), proof pressure is 1.5 MPa (215 psi), and temperature range is -5 to 70 C. The drain bowl holds 100 cc, and the unit weighs 880 g.
The J code omits the mounting bracket for panel-mount or existing brackets, and the N code means no gauge is supplied. The gauge connection is 1/4in if you add one later. The set pressure cannot be read without adding a gauge.
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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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