Airtac GAFR Adjustable Filter Regulator GAFR400C15ALK
The AirTAC Airtac GAFR Adjustable Filter Regulator GAFR400C15ALK 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 materialMetal
- Drainautomatic
- Pressure gaugeCircular, MPa / psi
- Weight880 g
About the Airtac GAFR Adjustable Filter Regulator GAFR400C15ALK
The GAFR400C15ALK is a filter and regulator combined in a single body, saving rail space and reducing potential leak points compared to separate units. This 1/2in port model handles a lower pressure range of 0.15-0.4 MPa (20-58 psi) and uses a 40 um element to remove water and solid particles.
Its metal bowl and automatic drain make it suitable for wet or unattended lines, while the included circular gauge with MPa/psi scale shows the set pressure. The balanced, self-locking regulator mechanism helps hold the outlet steady as supply pressure varies, resisting drift from vibration.
Airtac GAFR Adjustable Filter Regulator GAFR400C15ALK Technical Specifications
| Model | Airtac GAFR Adjustable Filter Regulator GAFR400C15ALK |
|---|---|
| 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 | Metal |
| 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 GAFR400C15ALK
| GAFR400 | GA400 series filter & regulator — sets the port range, drain-bowl capacity and weight. |
|---|---|
| C | Bowl material: Metal. 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 GAFR400C15ALK Is Used
Precision Fixturing
Feed a clamping fixture on a CNC machine where a stable, lower pressure is needed to avoid deforming delicate workpieces. The 40 um element protects the precision valves from particulates.
Unattended Lines
Use on a drop line feeding a small assembly station where the automatic drain and metal bowl reduce maintenance visits. The 100 cc bowl collects condensate between cycles.
Test Benches
Supply a controlled lower pressure to a leak-testing or calibration bench. The self-locking knob holds the setpoint against vibration from nearby equipment.
Is the Airtac GAFR Adjustable Filter Regulator GAFR400C15ALK the Right Air-Prep Unit?
Choose the GAFR400 body for medium-flow applications; its 7000 L/min plotted flow envelope at 0.7 MPa inlet is double the GAFR300's 3500 L/min, making it a logical step up for multi-actuator circuits. The metal bowl (C) is a build choice for demanding environments, and the automatic drain (A) removes condensate without manual attention. This lower-pressure (L) type is capped at 0.4 MPa, so confirm your system never needs more. The included bracket simplifies mounting, and the fitted gauge reads in MPa/psi. The reverse-flow valve (K) is fitted as an ordering difference. If oil is needed downstream, order the matching GAFC400-15 combination instead. With a 1.0 MPa max supply, you have about 0.6 MPa of headroom above this unit's 0.4 MPa regulated ceiling.
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 GAFR400C15ALK FAQ
It is a filter & regulator with a 1/2in port, lower pressure range of 0.15-0.4 MPa (20-58 psi), max pressure 1.0 MPa (145 psi), proof pressure 1.5 MPa (215 psi), temperature range -5 to 70 C, 100 cc drain bowl, and 880 g weight. It has a metal bowl, automatic drain, and a 40 um element.
The K indicates a reverse-flow (reflux) valve is fitted. It is an ordering difference from models without it. The catalogue does not detail its function in our data, so consult the full AirTAC documentation for operational details.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models usually ship in 3-4 days.
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Most inquiries answered within 7-8 hours.
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