Airtac GAFR Adjustable Filter Regulator GAFR40015ALK
The AirTAC Airtac GAFR Adjustable Filter Regulator GAFR40015ALK 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 40 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 grade40 µm
- Bowl materialPC
- Drainautomatic
- Pressure gaugeCircular, MPa / psi
- Weight880 g
About the Airtac GAFR Adjustable Filter Regulator GAFR40015ALK
The GAFR40015ALK is a genuine AirTAC filter & regulator, combining a diversion-type air filter and a balanced pressure regulator in a single body. This 1/2in port unit weighs 880 g and is rated for 0.15-0.4 MPa (20-58 psi), with a 40 um element filtering solid particles and liquid water from the air line. The automatic drain (A) clears the 100 cc condensate bowl without manual attention, and the circular gauge with MPa/psi scale is fitted for direct reading.
Because the filter and regulator share one body, this unit replaces a separate GAF filter plus a GAR regulator, reducing potential leak points and saving space on the rail. The balanced regulator mechanism holds the outlet pressure steady as supply pressure varies, while the pressed-in self-locking knob resists drift from vibration. The reverse-flow (reflux) valve is fitted as an ordering difference, and the mounting bracket is included for secure installation.
Airtac GAFR Adjustable Filter Regulator GAFR40015ALK Technical Specifications
| Model | Airtac GAFR Adjustable Filter Regulator GAFR40015ALK |
|---|---|
| Series | GAFR400 filter & regulator |
| Port size | 1/2" (PT thread) |
| Filtering grade | 40 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 GAFR40015ALK
| 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. |
| (blank) | Filtering grade 40 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 GAFR40015ALK Is Used
Precision Fixture Control
Feed a steady 0.15-0.4 MPa supply to a precision clamping fixture or a single-axis positioning table on an assembly line, where the lower pressure range protects delicate workpieces.
Packaging Machine Air Prep
Condition the air for a packaging machine's pneumatic sensors and light actuators, using the automatic drain to handle condensate in a humid production environment without manual checks.
Test Bench Air Supply
Provide filtered, regulated air to a laboratory test bench or calibration rig where a stable low pressure is critical and the 100 cc bowl allows longer operation between drain cycles.
Is the Airtac GAFR Adjustable Filter Regulator GAFR40015ALK the Right Air-Prep Unit?
Choose the GAFR40015ALK when you need a 1/2in port, lower-pressure (L) unit with automatic drain and included bracket. The L type tops out at 0.4 MPa (58 psi), so if your machine may ever need more than that, select the standard S type instead. The PC bowl is the standard build choice, and the 40 um element suits general shop air; upgrade to the 5 um (W) element for finer filtration on precision equipment. The automatic drain (A) is ideal for unattended or wet lines, while the blank drain option provides both semi-auto and manual drains. The PT thread gives an MPa/psi gauge scale, and the reflux valve (K) is fitted. If you need lubrication downstream, order the matching GAFC400-15 combination instead of this unit. 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 (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 GAFR40015ALK FAQ
The GAFR40015ALK is a filter & regulator with a 1/2in port, working pressure range of 0.15-0.4 MPa (20-58 psi), max pressure of 1.0 MPa (145 psi), and proof pressure of 1.5 MPa (215 psi). It operates in -5 to 70 C temperatures, has a 40 um element, a 100 cc drain bowl, and weighs 880 g. It features an automatic drain, a fitted gauge with MPa/psi scale, and a reverse-flow valve.
The K code indicates the reverse-flow (reflux) valve is fitted to this GAFR40015ALK. This is an ordering difference from models without the K code. The catalogue defers the detailed function of the reflux valve to a separate page, so please refer to the official AirTAC documentation for its operational specifics.
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