Airtac GAFR Adjustable Filter Regulator GAFR40015ALJNW
The AirTAC Airtac GAFR Adjustable Filter Regulator GAFR40015ALJNW 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 GAFR40015ALJNW
The GAFR40015ALJNW is a filter and regulator combined into a single body, handling both filtration and pressure control without needing separate units. It serves a 1/2in port line with a lower-pressure range of 0.15-0.4 MPa (20-58 psi) and a fine 5 um element for trapping small particles.
This 880 g unit uses a diversion structure that spins incoming air to separate liquid water and solid debris into its 100 cc condensate bowl. The automatic drain clears collected fluid without manual attention, while the balanced regulator mechanism maintains a steady outlet as supply pressure fluctuates.
Airtac GAFR Adjustable Filter Regulator GAFR40015ALJNW Technical Specifications
| Model | Airtac GAFR Adjustable Filter Regulator GAFR40015ALJNW |
|---|---|
| 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 GAFR40015ALJNW
| 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. |
| (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 GAFR40015ALJNW Is Used
Precision valve control
Feed a bank of precision pneumatic valves on a machining center with the 5 um element trapping fine wear particles before they reach sensitive spools.
Assembly station air
Supply a medium-duty assembly station with filtered air at a stable lower pressure, protecting hand tools and small actuators from pressure spikes.
Instrument air prep
Prepare air for lab instruments or gauging equipment where the 5 um filtration removes fine contaminants and the automatic drain keeps the bowl clear.
Is the Airtac GAFR Adjustable Filter Regulator GAFR40015ALJNW the Right Air-Prep Unit?
Choose the GAFR400 body for medium-flow lines needing a 1/2in port and a 100 cc drain bowl, stepping up from the GAFR300's 60 cc bowl when condensate volume is higher. The PC bowl suits general shop air, while the automatic drain (A) handles wet or unattended lines without manual checks. This model omits the mounting bracket (J) for panel-mount installations and has no gauge (N), so plan to add one via the 1/4in gauge connection if readout is needed. The 5 um element filters finer than the standard 40 um, ideal for sensitive valves but requiring more frequent servicing. The lower-pressure type (L) tops out at 0.4 MPa, so confirm your system never needs more than that. If lubrication is required downstream, order the matching GAFC400-15 combination instead of this unit. With a 1.0 MPa max supply, you have about 0.6 MPa of headroom above the 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 GAFR40015ALJNW FAQ
This filter & regulator has a 1/2in port, a 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 drain bowl, and weighs 880 g. The unit includes a 5 um element and an automatic drain.
The J code means the mounting bracket is omitted for installations using existing panel mounts or frames. The N code means no gauge is supplied, leaving a 1/4in gauge connection for adding one later. These options reduce cost when the accessories are not needed.
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