Airtac GAFR Adjustable Filter Regulator GAFR400C15AL
The AirTAC Airtac GAFR Adjustable Filter Regulator GAFR400C15AL 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 GAFR400C15AL
The GAFR400C15AL is a filter and regulator combined into a single body, so incoming air is spun to separate liquid water and solid particles before a balanced regulator sets a steady outlet pressure. This 1/2in model uses a metal bowl and an automatic drain, with a 40 um element as standard.
Its lower-pressure type regulates from 0.15 to 0.4 MPa (20-58 psi), and the circular gauge with MPa/psi scale is fitted. At 880 g with a 100 cc drain bowl, this size class suits medium machine headers where a compact, single-body unit saves rail space compared to separate filter and regulator parts.
Airtac GAFR Adjustable Filter Regulator GAFR400C15AL Technical Specifications
| Model | Airtac GAFR Adjustable Filter Regulator GAFR400C15AL |
|---|---|
| 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 GAFR400C15AL
| 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. |
| (blank) | No reverse-flow valve. |
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 GAFR400C15AL Is Used
Medium jig fixtures
Feed a multi-clamp jig on a machining center where a steady 0.15-0.4 MPa outlet keeps workholding force consistent without frequent adjustment.
Machine tool headers
Supply a 1/2in header on a lathe or mill, using the automatic drain to shed condensate automatically during long production runs.
Assembly line stations
Power pneumatic actuators on an assembly station where the metal bowl resists rough handling and the lower pressure range protects sensitive tooling.
Is the Airtac GAFR Adjustable Filter Regulator GAFR400C15AL the Right Air-Prep Unit?
Choose the GAFR400 body for 1/2in ports and a 100 cc condensate bowl, stepping up from the GAFR300's 60 cc bowl when you need fewer drain interventions. The metal bowl is a build choice for demanding environments, while the automatic drain handles unattended or wet lines without manual checks. The L type tops out at 0.4 MPa, so confirm your machine never needs more than that regulated output. The mounting bracket is included, the 40 um element is fitted, and the PT thread means the gauge reads MPa/psi. If oil is needed downstream, order the matching GAFC400-15 combination instead. Note that 1.0 MPa max supply leaves about 0.6 MPa above the 0.4 MPa top of the 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 GAFR400C15AL FAQ
This filter & regulator has a 1/2in port, a 100 cc metal drain bowl, and weighs 880 g. The lower-pressure type regulates from 0.15 to 0.4 MPa (20-58 psi), with a maximum supply of 1.0 MPa (145 psi) and a proof pressure of 1.5 MPa (215 psi). It operates from -5 to 70 C and must not freeze. The 40 um element is standard, and the circular gauge reads MPa/psi.
The L type is designed for applications that only need up to 0.4 MPa (58 psi), such as delicate gripping or low-force clamping. It provides finer adjustment within that band, but if your line may ever require more pressure, the standard S type (0.15-0.9 MPa) would be the correct choice.
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