Airtac GAFR Adjustable Filter Regulator GAFR40010LJWK
The AirTAC Airtac GAFR Adjustable Filter Regulator GAFR40010LJWK 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
- Drainsemi-auto + manual
- Pressure gaugeCircular, MPa / psi
- Weight880 g
About the Airtac GAFR Adjustable Filter Regulator GAFR40010LJWK
The GAFR40010LJWK is a filter and regulator combined into a single body, handling both filtration and pressure control in one compact unit. This model uses a 3/8in port, operates in the lower 0.15-0.4 MPa (20-58 psi) range, and comes with a 5 um element for finer particle removal.
The diversion structure spins incoming air to separate liquid water and solid debris into the 100 cc condensate bowl, while the balanced regulator maintains a steady outlet pressure. At 880 g, this unit is a substantial component that needs proper panel or frame mounting rather than support from the tubing alone.
Airtac GAFR Adjustable Filter Regulator GAFR40010LJWK Technical Specifications
| Model | Airtac GAFR Adjustable Filter Regulator GAFR40010LJWK |
|---|---|
| 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 | 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 GAFR40010LJWK
| 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". |
| (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. |
| K | Reverse-flow (reflux) valve attached. |
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 GAFR40010LJWK Is Used
Precision valve control
Feed a bank of precision pneumatic valves that require clean, regulated air at a consistent lower pressure, with the 5 um element protecting sensitive internal components.
Medium machine header
Supply a medium-sized machine header where the 3/8in port and 100 cc bowl handle moderate condensate loads, with the semi-auto drain requiring scheduled checks.
Test bench setup
Use on a test bench where a stable lower pressure range is needed for calibration work, with the gauge providing local reading and the reflux valve fitted as specified.
Is the Airtac GAFR Adjustable Filter Regulator GAFR40010LJWK the Right Air-Prep Unit?
This GAFR400 body suits medium-flow applications with its 3/8in port and flow curve plotted to 7000 L/min at 0.7 MPa inlet, placing it above the GAFR300's 3500 L/min envelope. The lower-pressure L type tops out at 0.4 MPa, so confirm your system never needs more than that; the standard S type would be the alternative if higher output is possible. The PC bowl is the standard build choice, and the 5 um element traps finer particles than the standard 40 um grade, though it will need more frequent service. This unit ships without the mounting bracket (J code), so plan for panel mounting or an existing bracket, and the semi-auto plus manual drain requires periodic attention rather than automatic dumping. The fitted circular gauge reads in MPa/psi, and the reverse-flow valve is included as an ordering difference. If your line needs lubrication downstream, order the matching GAFC400-10 combination instead. With a 1.0 MPa max supply, you have about 0.6 MPa of headroom above this unit's 0.4 MPa regulated ceiling.
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 GAFR40010LJWK FAQ
The GAFR40010LJWK operates in the 0.15-0.4 MPa (20-58 psi) pressure range, with a 1.0 MPa (145 psi) maximum and 1.5 MPa (215 psi) proof pressure. It is rated for -5 to 70 C, has a 100 cc drain bowl, and weighs 880 g. The unit uses a 3/8in port and comes with a 5 um element.
The L code specifies the lower-pressure type, which tops out at 0.4 MPa instead of the standard 0.9 MPa, making it suitable for applications that never need higher output. The J code means the mounting bracket is not included, so you must use an existing bracket or panel-mount the unit.
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