Airtac GAFR Adjustable Filter Regulator GAFR400N15ALJW
The AirTAC Airtac GAFR Adjustable Filter Regulator GAFR400N15ALJW 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 materialNylon
- Drainautomatic
- Pressure gaugeCircular, MPa / psi
- Weight880 g
About the Airtac GAFR Adjustable Filter Regulator GAFR400N15ALJW
The GAFR400N15ALJW is a filter and pressure regulator combined into a single body, so it cleans incoming air and holds a steady outlet pressure without needing a separate filter plus regulator pair. This unit has a 1/2in port, a lower-pressure range of 0.15-0.4 MPa (20-58 psi), and a 5 um element that traps finer particles than the standard 40 um grade.
Its 100 cc nylon condensate bowl collects the water and solids spun out by the diversion structure, and the automatic drain clears it without manual attention. Weighing 880 g, this body class needs proper panel or frame support rather than hanging from the tubing.
Airtac GAFR Adjustable Filter Regulator GAFR400N15ALJW Technical Specifications
| Model | Airtac GAFR Adjustable Filter Regulator GAFR400N15ALJW |
|---|---|
| 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 | Nylon |
| 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 | Not included (J) |
| 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 GAFR400N15ALJW
| GAFR400 | GA400 series filter & regulator — sets the port range, drain-bowl capacity and weight. |
|---|---|
| N | Bowl material: Nylon. 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). |
| J | No bracket (J) — supplied without the mounting bracket. |
| (blank) | Circular pressure gauge fitted. |
| 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 GAFR400N15ALJW Is Used
Precision valve control
Feed a bank of precision pneumatic valves that need clean, regulated air at a stable lower pressure. The 5 um element protects fine internal passages from particle wear.
Medium machine header
Supply a single-station machine header with filtered air at a set pressure. The 1/2in port and 7000 L/min envelope at 0.7 MPa inlet handle moderate multi-actuator demand.
Test rig air supply
Use it on a bench test rig where a consistent 0.15-0.4 MPa supply is required. The automatic drain keeps the bowl from filling during long unattended test cycles.
Is the Airtac GAFR Adjustable Filter Regulator GAFR400N15ALJW the Right Air-Prep Unit?
Choose the GAFR400 body for medium-flow lines where a GAFR300 (3500 L/min envelope at 0.7 MPa inlet) would be undersized; the GAFR400's curve is plotted to 7000 L/min at 0.7 MPa inlet. The nylon bowl suits applications where a metal bowl is not required, and the automatic drain handles wet or unattended lines. The L type tops out at 0.4 MPa, so confirm your machine never needs more than that. No bracket is included (J), the 5 um element is fitted, and the PT thread carries a MPa/psi gauge scale. 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 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 GAFR400N15ALJW FAQ
The GAFR400N15ALJW is a filter & regulator with a 1/2in port, lower-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 from -5 to 70 C, has a 100 cc drain bowl, and weighs 880 g.
The L type is set for 0.15-0.4 MPa, which suits applications that never need higher pressure. The W element code means a 5 um filter grade is fitted, trapping finer solids than the standard 40 um for more sensitive downstream components.
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