Airtac GAFR Adjustable Filter Regulator GAFR400C15ALNW
The AirTAC Airtac GAFR Adjustable Filter Regulator GAFR400C15ALNW 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 materialMetal
- Drainautomatic
- Pressure gaugeNot fitted
- Weight880 g
About the Airtac GAFR Adjustable Filter Regulator GAFR400C15ALNW
The AirTAC GAFR400C15ALNW is a filter and regulator combined into a single body, saving rail space and reducing potential leak points compared to separate units. This model has a 1/2in port, a 5 um element, and a metal bowl, with an automatic drain for unattended operation.
Its lower-pressure regulator operates from 0.15 to 0.4 MPa (20-58 psi), making it suitable for applications needing a precise, low-pressure supply. The 100 cc metal bowl collects water and solids spun out by the diversion structure, and the 880 g weight indicates a unit that needs proper panel or frame mounting.
Airtac GAFR Adjustable Filter Regulator GAFR400C15ALNW Technical Specifications
| Model | Airtac GAFR Adjustable Filter Regulator GAFR400C15ALNW |
|---|---|
| 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 | 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. 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 GAFR400C15ALNW
| 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. |
| N | No pressure gauge; 1/4" gauge connection. |
| W | Filtering grade 5 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 GAFR400C15ALNW Is Used
Low-Pressure Precision Jigs
Feed a delicate clamping jig or a light pressing fixture that requires a stable, low-pressure air supply. The 5 um element protects sensitive valves from fine particulates.
Instrument Air for Lab Equipment
Supply clean, regulated air to laboratory instruments or pneumatic controls that operate below 0.4 MPa. The automatic drain keeps the 100 cc bowl from filling during long experiments.
Dedicated Machine Sub-Circuit
Isolate a single station on a production line that needs a filtered, lower-pressure feed. The 1/2in port and 880 g body are sized for a fixed, frame-mounted installation.
Is the Airtac GAFR Adjustable Filter Regulator GAFR400C15ALNW the Right Air-Prep Unit?
Choose the GAFR400 body for a 1/2in port and a 100 cc drain bowl, a step up from the GAFR300's 60 cc bowl for less frequent draining. The metal bowl is a build choice for demanding environments; confirm compatibility for aggressive surroundings. The automatic drain handles condensate without manual intervention, while the 5 um element traps finer particles than the standard 40 um. The L-type regulator tops out at 0.4 MPa, so ensure your system never needs more than that. A mounting bracket is included, and the PT thread has an MPa/psi gauge scale, though no gauge is fitted; the 1/4in gauge connection is ready if you add one. For lines needing lubrication downstream, order the matching GAFC400-15 combination instead. 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 GAFR400C15ALNW FAQ
This filter & regulator has a 1/2in port, a working 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, has a 100 cc metal drain bowl, and weighs 880 g. The 5 um element and automatic drain are fitted.
The 'L' code specifies a lower-pressure regulator, capping the outlet at 0.4 MPa (58 psi) for applications that require a gentle, stable supply. The 'N' after the port code means no gauge is included; the 1/4in gauge connection is present if you need to add one to monitor the set pressure.
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