Airtac GAFR Adjustable Filter Regulator GAFR40010ALNWK
The AirTAC Airtac GAFR Adjustable Filter Regulator GAFR40010ALNWK 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 gaugeNot fitted
- Weight880 g
About the Airtac GAFR Adjustable Filter Regulator GAFR40010ALNWK
The GAFR40010ALNWK is a filter & regulator that combines a diversion-type air filter and a balanced pressure regulator in a single body, so it conditions the air supply without needing a separate filter and regulator pair. This 3/8in model operates in the lower 0.15-0.4 MPa (20-58 psi) range and uses a 5 um element to trap fine particles, while its 100 cc condensate bowl collects the water and solids spun out of the airstream.
With an automatic drain and a reverse-flow (reflux) valve fitted, this unit is built for continuous, low-maintenance operation in a compact footprint. The 880 g body includes a mounting bracket, and the 1/4in gauge connection is ready if a pressure gauge is added later to monitor the set pressure.
Airtac GAFR Adjustable Filter Regulator GAFR40010ALNWK Technical Specifications
| Model | Airtac GAFR Adjustable Filter Regulator GAFR40010ALNWK |
|---|---|
| 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 | Included |
| 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 GAFR40010ALNWK
| 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). |
| (blank) | Mounting bracket included. |
| N | No pressure gauge; 1/4" gauge connection. |
| 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 GAFR40010ALNWK Is Used
Precision pressure setting
Set a stable 0.3 MPa supply for a precision pneumatic valve or a sensitive control loop, with the 5 um element protecting the internals from fine wear particles.
Compact machine station
Feed a single 3/8in actuator station on a small assembly machine, using the automatic drain to handle condensate without interrupting production.
Instrument air pre-filter
Protect a laboratory instrument or a test rig that needs clean, regulated air at a low pressure, with the 5 um element and the lower pressure range matching the requirement.
Is the Airtac GAFR Adjustable Filter Regulator GAFR40010ALNWK the Right Air-Prep Unit?
Choose the GAFR40010ALNWK when you need a 3/8in filter & regulator with a lower pressure ceiling and fine filtration. The automatic drain (A) handles condensate without manual attention, while the 5 um element (W) suits precision applications; the included bracket simplifies mounting, and the reverse-flow valve (K) is an ordering difference to note. The PC bowl and PT threads match standard installations, but confirm compatibility for aggressive environments. If the line needs 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 GAFR40010ALNWK FAQ
The GAFR40010ALNWK is a filter & regulator with a 3/8in port, a lower pressure range of 0.15-0.4 MPa (20-58 psi), a maximum pressure of 1.0 MPa (145 psi), and a proof pressure of 1.5 MPa (215 psi). It operates from -5 to 70 C (must not freeze), has a 100 cc drain bowl, and weighs 880 g. The unit has a 5 um element, an automatic drain, and a PC bowl.
The automatic drain automatically expels accumulated condensate from the 100 cc bowl without manual intervention, making it suitable for unattended operation or wet air lines. This model has the automatic drain option, so you do not need to manually open a drain valve.
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Covers non-human-caused product damage.
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