Airtac GAFR Adjustable Filter Regulator GAFR40015ALJNWK
The AirTAC Airtac GAFR Adjustable Filter Regulator GAFR40015ALJNWK 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 materialPC
- Drainautomatic
- Pressure gaugeNot fitted
- Weight880 g
About the Airtac GAFR Adjustable Filter Regulator GAFR40015ALJNWK
The GAFR40015ALJNWK is a filter and pressure regulator combined into a single body, with no lubricator section. It handles a 1/2in port and delivers a lower pressure range of 0.15-0.4 MPa (20-58 psi), filtering down to 5 um. This unit weighs 880 g and features a 100 cc condensate bowl, with an automatic drain for unattended operation.
A 5 um element traps finer particles than the standard 40 um grade, making it suitable for precision valves or instrument air. The balanced regulator mechanism holds the outlet steady as supply pressure varies, and the pressed-in self-locking knob resists drift from vibration. The reverse-flow (reflux) valve is fitted as an ordering difference.
Airtac GAFR Adjustable Filter Regulator GAFR40015ALJNWK Technical Specifications
| Model | Airtac GAFR Adjustable Filter Regulator GAFR40015ALJNWK |
|---|---|
| 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 | 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 | Not included (J) |
| 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 GAFR40015ALJNWK
| 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). |
| J | No bracket (J) — supplied without the mounting bracket. |
| N | No pressure gauge; 1/4" gauge connection. |
| W | Filtering grade 5 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 GAFR40015ALJNWK Is Used
Precision valve control
Feed a bank of precision pneumatic valves with 5 um filtered air at a stable lower pressure, protecting fine internal passages from particle wear.
Instrument air supply
Supply instrument air to sensitive measurement devices in a lab or test rig, where fine filtration and a capped pressure below 0.4 MPa are required.
Light assembly line
Power light-duty actuators on an assembly line that operate within a 0.4 MPa ceiling, with automatic draining to reduce maintenance on a wet line.
Is the Airtac GAFR Adjustable Filter Regulator GAFR40015ALJNWK the Right Air-Prep Unit?
Choose the GAFR400 body for a 1/2in port with a 100 cc drain bowl, compared to the GAFR300's 60 cc bowl for smaller lines. The L type limits the regulated range to 0.15-0.4 MPa (20-58 psi); if the machine may ever need more, select the standard S type instead. This model has an automatic drain, a 5 um element, no mounting bracket, and no gauge, so the 1/4in gauge connection is available if one is added later. The PT thread uses an MPa/psi gauge scale, and the reflux valve is fitted. If oil is needed downstream, order the matching GAFC400-15 combination. 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 GAFR40015ALJNWK FAQ
The GAFR40015ALJNWK is a filter & regulator with a 1/2in port, a pressure range of 0.15-0.4 MPa (20-58 psi), and a maximum pressure of 1.0 MPa (145 psi). Proof pressure is 1.5 MPa (215 psi), and the temperature range is -5 to 70 C. It has a 100 cc drain bowl and weighs 880 g.
The K code indicates a reverse-flow (reflux) valve is fitted. It is an ordering difference from models without the K code; the catalogue defers its function to a separate page.
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