Airtac GAFR Adjustable Filter Regulator GAFR400C10ALJNW
The AirTAC Airtac GAFR Adjustable Filter Regulator GAFR400C10ALJNW 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
- Drainautomatic
- Pressure gaugeNot fitted
- Weight880 g
About the Airtac GAFR Adjustable Filter Regulator GAFR400C10ALJNW
The GAFR400C10ALJNW is a filter and pressure regulator combined into a single body, eliminating the need for separate units. It handles 3/8" ports with a lower pressure range of 0.15-0.4 MPa (20-58 psi), and uses a 5 um filter element for finer particle removal.
This version features a metal bowl and an automatic drain, making it suitable for continuous operation. The unit weighs 880 g and its flow curve is plotted to 7000 L/min at 0.7 MPa inlet, providing a sizing reference rather than a rated capacity. No gauge is included, but the 1/4" gauge connection allows for later installation.
Airtac GAFR Adjustable Filter Regulator GAFR400C10ALJNW Technical Specifications
| Model | Airtac GAFR Adjustable Filter Regulator GAFR400C10ALJNW |
|---|---|
| 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 | 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 GAFR400C10ALJNW
| 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". |
| 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. |
| 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 GAFR400C10ALJNW Is Used
Precision pneumatic controls
The 5 um element and lower pressure range make this suitable for feeding precision valves or instruments that require clean, stable air below 0.4 MPa.
Automated assembly stations
With a 3/8" port and 100 cc metal bowl, this unit can serve a single assembly station with multiple small actuators, providing filtered air and a consistent lower pressure setting.
Laboratory air supply
For lab equipment needing clean, low-pressure air, this filter-regulator with automatic drain offers reliable operation without frequent manual intervention, and the metal bowl suits demanding environments.
Is the Airtac GAFR Adjustable Filter Regulator GAFR400C10ALJNW the Right Air-Prep Unit?
Choose this GAFR400 for applications needing a 3/8" port with a lower 0.4 MPa pressure ceiling. The metal bowl and automatic drain suit wet or unattended lines, while the 5 um element protects sensitive downstream equipment. The absence of a bracket (J) means you must provide your own mounting, and no gauge (N) is supplied; the 1/4" connection is ready for one. If lubrication is needed downstream, the matching GAFC400-10 combination adds a lubricator. With a 1.0 MPa max supply, you have 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 GAFR400C10ALJNW FAQ
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). Temperature range is -5 to 70 C. It has a 100 cc drain bowl and weighs 880 g. The filter element is 5 um, and the port is 3/8".
The 'N' code means no gauge is included, but the 1/4" gauge connection is present for adding one. The 'J' code means the mounting bracket is omitted, so you will need to use an existing bracket or panel mount. This allows for a more compact installation where these items are not required.
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