Airtac GAFR Adjustable Filter Regulator GAFR40010LJW
The AirTAC Airtac GAFR Adjustable Filter Regulator GAFR40010LJW 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 GAFR40010LJW
The GAFR40010LJW is a filter and pressure regulator combined into one 880 g body with a 3/8in port. It conditions air for lower-pressure circuits, delivering a steady 0.15-0.4 MPa (20-58 psi) outlet while trapping water and solids down to 5 um. A circular gauge with MPa/psi scale is fitted, and the unit ships without a mounting bracket.
The single-piece construction replaces a separate filter plus regulator, reducing potential leak points and saving rail space. Its 100 cc condensate bowl collects separated liquid, and the semi-auto plus manual drain gives operators both automatic purging and a manual override for scheduled maintenance.
Airtac GAFR Adjustable Filter Regulator GAFR40010LJW Technical Specifications
| Model | Airtac GAFR Adjustable Filter Regulator GAFR40010LJW |
|---|---|
| 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 GAFR40010LJW
| 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. |
| (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 GAFR40010LJW Is Used
Precision valve actuation
Feed a bank of precision pneumatic valves that require clean, low-pressure air at a stable 0.15-0.4 MPa. The 5 um element protects fine internal passages from particle wear.
Laboratory air supply
Supply filtered air to lab fixtures or test benches where consistent low pressure is critical. The 100 cc bowl handles condensate from humid instrument air, and the manual drain allows controlled purging.
Low-pressure machine circuits
Power a dedicated low-pressure circuit on a assembly machine, such as a delicate clamping or positioning operation. The 880 g body mounts securely to a frame or panel, not just tubing.
Is the Airtac GAFR Adjustable Filter Regulator GAFR40010LJW the Right Air-Prep Unit?
Choose the GAFR400 body when you need 3/8in ports and a 7000 L/min flow envelope (plotted at 0.7 MPa inlet) - step up from the GAFR300's 3500 L/min if your line demands more capacity. The PC bowl suits general industrial use; the 5 um element captures finer particles than the standard 40 um for sensitive equipment, though it will need more frequent service. This L-type regulates only up to 0.4 MPa, so confirm your circuit never requires more pressure. The omitted bracket (J) suits panel mounts or existing hardware, while the fitted gauge shows MPa/psi. The semi-auto and manual drains handle condensate without electricity. If your downstream process needs lubrication, order the GAFC400-10 combination instead. Note that 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 GAFR40010LJW FAQ
Working pressure range is 0.15-0.4 MPa (20-58 psi). Maximum pressure is 1.0 MPa (145 psi) and proof pressure is 1.5 MPa (215 psi). Temperature range 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 5 um filter element.
The L code designates a lower-pressure regulator, topping out at 0.4 MPa instead of the standard 0.9 MPa, which is ideal for sensitive low-pressure applications. The J code means the mounting bracket is not included, so you will need to use an existing bracket or panel-mount the unit. The 5 um element provides finer filtration than the standard 40 um.
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