Airtac GAFR Adjustable Filter Regulator GAFR40010ALJWK
The AirTAC Airtac GAFR Adjustable Filter Regulator GAFR40010ALJWK 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
- Drainautomatic
- Pressure gaugeCircular, MPa / psi
- Weight880 g
About the Airtac GAFR Adjustable Filter Regulator GAFR40010ALJWK
The GAFR40010ALJWK is a filter and regulator combined into a single body, handling both air cleaning and pressure control in one compact unit. It accepts 3/8" connections, operates in the lower 0.15-0.4 MPa (20-58 psi) band, and uses a 5 um element to trap fine particles.
A diversion structure spins the incoming air to separate liquid water and solid debris into the 100 cc condensate bowl, while the balanced regulator holds the outlet steady as supply pressure varies. The pressed-in self-locking knob resists drift from vibration, and the circular gauge with clip and magnifier reads in MPa/psi. This model includes an automatic drain and a reverse-flow valve, but no mounting bracket.
Airtac GAFR Adjustable Filter Regulator GAFR40010ALJWK Technical Specifications
| Model | Airtac GAFR Adjustable Filter Regulator GAFR40010ALJWK |
|---|---|
| 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 | 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 GAFR40010ALJWK
| 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. |
| 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 GAFR40010ALJWK Is Used
Precision valve control
Feed a bank of precision pneumatic valves that require clean, low-pressure air at a stable 0.15-0.4 MPa setpoint. The 5 um element protects sensitive internals from fine particulate.
Instrument air supply
Supply a laboratory instrument or test rig that operates in the lower pressure band. The automatic drain keeps the 100 cc bowl from flooding during extended unattended runs.
Compact machine station
Mount this 880 g unit on a small machine frame to filter and regulate air for a single actuator or a light-duty workholding fixture, using your own bracket for installation.
Is the Airtac GAFR Adjustable Filter Regulator GAFR40010ALJWK the Right Air-Prep Unit?
Choose the GAFR400 body when you need 3/8" ports with a 100 cc condensate bowl and an 880 g mass that requires a proper panel or frame mount rather than tubing support. The L type caps the regulated output at 0.4 MPa, so confirm your machinery never needs more than that; the 5 um element suits precision valves or instrument air but requires more frequent service than the standard 40 um. The automatic drain handles unattended or wet lines, the PC bowl suits general environments, and the missing bracket (J) means you must supply your own mounting. The fitted gauge reads MPa/psi on the PT thread, and the reverse-flow valve is present as an ordering difference. If you need 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 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 GAFR40010ALJWK FAQ
Working pressure range is 0.15-0.4 MPa (20-58 psi), with a 1.0 MPa (145 psi) maximum and 1.5 MPa (215 psi) proof pressure. Temperature range is -5 to 70 C and must not freeze. The condensate bowl holds 100 cc and the unit weighs 880 g.
The L code sets the regulated output to 0.15-0.4 MPa for applications that only need low pressure. The J code omits the mounting bracket, so you must provide your own panel mount or existing bracket. The automatic drain and 5 um element are separate options.
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