Airtac GAFR Adjustable Filter Regulator GAFR40015ALWK
The AirTAC Airtac GAFR Adjustable Filter Regulator GAFR40015ALWK 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 1/2" 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 size1/2"
- 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 GAFR40015ALWK
This AirTAC GAFR40015ALWK is a filter and regulator combined into a single body, so one compact unit both cleans the air and holds a steady outlet pressure. It has no lubricator and only one bowl, the 100 cc condensate bowl, which the automatic drain empties for you. The 1/2in port and 880 g mass put it in the mid-size class, a step up from the GAFR300's 500 g body for lines that need more flow. Its 5 um element traps far finer particles than the standard 40 um grade, suiting precision valves or instrument circuits.
The lower-pressure type regulates from 0.15 to 0.4 MPa (20-58 psi), with a 1.0 MPa (145 psi) maximum supply and 1.5 MPa (215 psi) proof pressure. The circular gauge with MPa/psi scale is fitted, and the balanced, self-locking knob resists drift from vibration. The diversion structure spins the incoming air so liquid water and solid grain drop into the bowl, keeping the downstream line clean. Rated for -5 to 70 C, it must not freeze, so keep it out of unheated winter lines.
Airtac GAFR Adjustable Filter Regulator GAFR40015ALWK Technical Specifications
| Model | Airtac GAFR Adjustable Filter Regulator GAFR40015ALWK |
|---|---|
| Series | GAFR400 filter & regulator |
| Port size | 1/2" (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. 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 GAFR40015ALWK
| 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). |
| 15 | Port size 1/2". 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. |
| (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 GAFC400-15 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 · 1/2" · curve to 7000 L/min |
|---|---|
| One size down | GAFR300 |
| One size up | GAFR500 (curve to 8000 L/min) |
| Add a lubricator | GAFC400-15 (F.R.L. combination) |
Where the Airtac GAFR Adjustable Filter Regulator GAFR40015ALWK Is Used
Precision valve control
Feed a bank of precision pneumatic valves on a machining fixture where the 5 um element protects fine internal passages and the lower 0.4 MPa range matches low-pressure actuation needs.
Wet plant air line
Mount on a wet compressor line feeding a mid-size assembly station; the automatic drain clears condensate without manual checks, and the 100 cc bowl handles the load between services.
Instrument air circuit
Use in a test bench or calibration rig where the 5 um filtration and stable regulated output protect sensitive instruments, with the gauge letting operators verify set pressure at a glance.
Is the Airtac GAFR Adjustable Filter Regulator GAFR40015ALWK the Right Air-Prep Unit?
Choose this GAFR400 body when a 1/2in port and a 100 cc drain bowl match your flow needs; the flow curve plots to 7000 L/min at 0.7 MPa inlet, about double the GAFR300's 3500 L/min envelope. The PC bowl is the standard build, while the 5 um element suits finer filtration but needs more frequent service than 40 um. The automatic drain handles wet or unattended lines, and the included bracket mounts it securely; the fitted gauge reads MPa/psi on the PT thread. The K code adds the reverse-flow valve as an ordering difference, and if you need oil downstream, order the matching GAFC400-15 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 lower-pressure range.
Quick checklist
- ✓ Body size for your peak flow (1/2" 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 GAFC400-15 combination; do not expect an oil mist from this unit.
Airtac GAFR Adjustable Filter Regulator GAFR40015ALWK FAQ
This filter & regulator has a 1/2in port, a 100 cc drain bowl, and weighs 880 g. The lower-pressure type regulates from 0.15 to 0.4 MPa (20-58 psi), with a 1.0 MPa (145 psi) maximum and 1.5 MPa (215 psi) proof pressure. It operates from -5 to 70 C and must not freeze. The 5 um element and automatic drain are fitted, with the flow curve plotted to 7000 L/min at 0.7 MPa inlet.
The K code indicates a reverse-flow (reflux) valve is fitted to this GAFR40015ALWK. It is an ordering difference shown as a separate pneumatic symbol in the catalogue; the function is detailed on a page not included in our data, so confirm the application with the datasheet if you need the operating details.
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