Airtac GAFR Adjustable Filter Regulator GAFR400C10LJW
The AirTAC Airtac GAFR Adjustable Filter Regulator GAFR400C10LJW 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 materialMetal
- Drainsemi-auto + manual
- Pressure gaugeCircular, MPa / psi
- Weight880 g
About the Airtac GAFR Adjustable Filter Regulator GAFR400C10LJW
The GAFR400C10LJW is a filter and regulator combined in a single body, with no lubricator section. It handles a 3/8in port and delivers a lower pressure range of 0.15-0.4 MPa (20-58 psi), using a 5 um element for finer filtration.
Its metal bowl holds 100 cc of condensate, and the unit weighs 880 g. The balanced regulator mechanism helps maintain a steady outlet pressure as supply varies, and the pressed-in knob resists drift from vibration.
Airtac GAFR Adjustable Filter Regulator GAFR400C10LJW Technical Specifications
| Model | Airtac GAFR Adjustable Filter Regulator GAFR400C10LJW |
|---|---|
| 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 | Metal |
| 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 GAFR400C10LJW
| GAFR400 | GA400 series filter & regulator — sets the port range, drain-bowl capacity and weight. |
|---|---|
| C | Bowl material: Metal. 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 GAFR400C10LJW Is Used
Precision valve control
Feed a bank of precision pneumatic valves on a 3/8in manifold. The 5 um element protects fine internals, while the lower pressure range suits delicate actuation.
Test bench air supply
Supply a laboratory test bench where a stable, lower pressure is required. The 100 cc metal bowl handles condensate from a moderately wet line, and the gauge shows the set point clearly.
Light assembly station
Power a light assembly station's single-acting cylinders. The compact 880 g body with a 3/8in port fits tight machine frames, and the semi-auto drain allows quick manual purging.
Is the Airtac GAFR Adjustable Filter Regulator GAFR400C10LJW the Right Air-Prep Unit?
Choose this GAFR400 for 3/8in lines needing a lower regulated output. The metal bowl (C) is a build choice; the 5 um element (W) traps finer particles than the standard 40 um, at the cost of more frequent service. This model has no bracket (J), so plan for panel mounting or an existing support. The semi-auto and manual drains are both fitted, and the PT thread means the included gauge reads in MPa/psi. If you need oil downstream, order the GAFC400-10 combination instead. With a 1.0 MPa max supply, you have about 0.6 MPa of headroom above the 0.4 MPa top of this unit's regulated 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 GAFR400C10LJW FAQ
The GAFR400C10LJW is a filter & regulator with a 3/8in port. Its 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). It operates from -5 to 70 C and must not freeze. The metal drain bowl holds 100 cc, and the unit weighs 880 g. It uses a 5 um element and has a PT thread.
The 'L' in the code indicates a lower-pressure regulator, with a maximum regulated output of 0.4 MPa instead of the standard 0.9 MPa. This is ideal for applications requiring a limited, precise pressure band. If your machine might ever need more than 0.4 MPa, this is the wrong part; the standard type would be required.
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