Airtac GAFR Adjustable Filter Regulator GAFR400N15ASJNW
The AirTAC Airtac GAFR Adjustable Filter Regulator GAFR400N15ASJNW 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 - 0.9 MPa (20 - 130 psi). It has no lubricator, so it adds no oil to the airflow.
- TypeFilter & regulator
- Port size1/2"
- Pressure range0.15 - 0.9 MPa (20 - 130 psi)
- Filtering grade5 µm
- Bowl materialNylon
- Drainautomatic
- Pressure gaugeNot fitted
- Weight880 g
About the Airtac GAFR Adjustable Filter Regulator GAFR400N15ASJNW
The GAFR400N15ASJNW is a filter and regulator combined into a single body, eliminating the need for separate GAF and GAR units. This 1/2in model handles up to 0.9 MPa (130 psi) and uses a 5 um element to trap fine particles before they reach downstream equipment.
Its nylon bowl holds 100 cc of condensate, and the automatic drain clears water without manual intervention. The unit weighs 880 g, so it requires a proper panel or frame mount rather than support from the tubing alone.
Airtac GAFR Adjustable Filter Regulator GAFR400N15ASJNW Technical Specifications
| Model | Airtac GAFR Adjustable Filter Regulator GAFR400N15ASJNW |
|---|---|
| Series | GAFR400 filter & regulator |
| Port size | 1/2" (PT thread) |
| Filtering grade | 5 µm |
| Pressure range | 0.15 - 0.9 MPa (20 - 130 psi) |
| Type | Standard |
| 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. 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 GAFR400N15ASJNW
| 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. |
| S | Standard type — 0.15 - 0.9 MPa (20 - 130 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 GAFR400N15ASJNW Is Used
Precision valve control
Feed a bank of precision pneumatic valves that require cleaner air than a 40 um element provides. The 5 um filter protects sensitive internal clearances from fine abrasive dust.
Machine tool header
Supply a 1/2in header on a CNC machine or assembly station where multiple actuators draw air. The 100 cc bowl and automatic drain reduce maintenance stops on continuous shifts.
Panel-mounted installation
Mount this regulator directly to a machine panel using existing holes, since the bracket is omitted. The compact 880 g body fits where a separate filter and regulator would not.
Is the Airtac GAFR Adjustable Filter Regulator GAFR400N15ASJNW the Right Air-Prep Unit?
Choose this GAFR400 when you need 1/2in ports and a 100 cc drain bowl, stepping up from the GAFR300's 60 cc bowl for longer intervals between drains. The nylon bowl suits applications where a lighter alternative to metal is preferred, while the automatic drain handles wet or unattended lines. This model omits the bracket and gauge, so plan for panel mounting and add a 1/4in gauge if you need to read outlet pressure. The 5 um element captures finer particles than the standard 40 um, ideal for precision valves, though it requires more frequent service. The PT thread matches MPa/psi gauge scales. If oil is needed downstream, order the matching GAFC400-15 combination instead. 1.0 MPa max supply leaves about 0.1 MPa above the 0.9 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 GAFR400N15ASJNW FAQ
Working pressure range is 0.15-0.9 MPa (20-130 psi), with a maximum pressure of 1.0 MPa (145 psi) and proof pressure of 1.5 MPa (215 psi). Operating temperature is -5 to 70 C. The drain bowl holds 100 cc and the unit weighs 880 g. It uses a 5 um element and has an automatic drain.
The N after the port code means no gauge is supplied; the gauge connection is 1/4in if you add one later. The J code means the mounting bracket is omitted, so you must use a panel mount or existing bracket. Both options reduce cost when these features are not needed.
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