Airtac GAFR Adjustable Filter Regulator GAFR40010ASJWK
The AirTAC Airtac GAFR Adjustable Filter Regulator GAFR40010ASJWK 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 - 0.9 MPa (20 - 130 psi). It has no lubricator, so it adds no oil to the airflow.
- TypeFilter & regulator
- Port size3/8"
- Pressure range0.15 - 0.9 MPa (20 - 130 psi)
- Filtering grade5 µm
- Bowl materialPC
- Drainautomatic
- Pressure gaugeCircular, MPa / psi
- Weight880 g
About the Airtac GAFR Adjustable Filter Regulator GAFR40010ASJWK
The GAFR40010ASJWK is a filter and regulator combined into one body, so it cleans incoming air and sets a steady outlet pressure without needing a separate filter plus regulator pair. This 3/8in version operates from 0.15 to 0.9 MPa (20-130 psi) and uses a 5 um element to trap fine particles. The circular gauge with clip and magnifier is fitted, showing pressure on an MPa/psi scale.
The unit weighs 880 g and has a 100 cc condensate bowl, which sets the service interval for draining collected water and solids. The balanced regulator mechanism holds the set pressure steady as supply pressure varies, while the pressed-in self-locking knob resists drift from vibration. This model has an automatic drain, so it suits unattended operation on wet lines.
Airtac GAFR Adjustable Filter Regulator GAFR40010ASJWK Technical Specifications
| Model | Airtac GAFR Adjustable Filter Regulator GAFR40010ASJWK |
|---|---|
| Series | GAFR400 filter & regulator |
| Port size | 3/8" (PT thread) |
| Filtering grade | 5 µm |
| Pressure range | 0.15 - 0.9 MPa (20 - 130 psi) |
| Type | Standard |
| 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. 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 GAFR40010ASJWK
| 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. |
| S | Standard type — 0.15 - 0.9 MPa (20 - 130 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 GAFR40010ASJWK Is Used
CNC machine control air
Feed a 3/8in line to a CNC machine's pneumatic controls where the 5 um element protects precision valves from fine wear particles. The automatic drain keeps the 100 cc bowl from overflowing during long automated runs.
Assembly station headers
Supply a multi-station assembly bench where several actuators share one regulated air source. The 7000 L/min plotted flow envelope at 0.7 MPa inlet gives headroom for simultaneous cylinder movements.
Test rig pressure supply
Use on a test bench where a stable 0.15-0.9 MPa supply is needed for checking valve response. The balanced regulator holds outlet pressure steady as the shop compressor cycles.
Is the Airtac GAFR Adjustable Filter Regulator GAFR40010ASJWK the Right Air-Prep Unit?
Choose this GAFR400 body for a 3/8in line that needs more flow than a GAFR300 (plotted to 3500 L/min) but less than a GAFR500 (plotted to 8000 L/min at 0.7 MPa inlet). The PC bowl is the standard build choice; the 5 um element (W) traps finer particles than the 40 um standard for precision valves or instrument air. The automatic drain (A) handles condensate without manual attention, while the J code means no mounting bracket is included, so plan for a panel mount or existing bracket. The fitted gauge reads in MPa/psi with PT threads, and the K code adds the reverse-flow (reflux) valve as an ordering difference. If lubrication is needed downstream, order the matching GAFC400-10 combination instead. With a 1.0 MPa max supply, you have about 0.1 MPa above the 0.9 MPa top of the regulated range, so keep supply near 1.0 MPa to reach the full 0.9 MPa outlet.
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 GAFR40010ASJWK FAQ
Working pressure range is 0.15-0.9 MPa (20-130 psi) with a 1.0 MPa (145 psi) maximum and 1.5 MPa (215 psi) proof pressure. Temperature range is -5 to 70 C (must not freeze). The drain bowl holds 100 cc and the unit weighs 880 g. It uses a 5 um filter element and has an automatic drain.
The K indicates a reverse-flow (reflux) valve is fitted to the GAFR40010ASJWK. It appears as a separate pneumatic symbol in the catalogue and is an ordering difference from models without K. The catalogue defers its function to a separate page, so refer to the full AirTAC documentation for operational details.
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