Airtac GAFR Adjustable Filter Regulator GAFR400C15ASJN
The AirTAC Airtac GAFR Adjustable Filter Regulator GAFR400C15ASJN 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 40 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 grade40 µm
- Bowl materialMetal
- Drainautomatic
- Pressure gaugeNot fitted
- Weight880 g
About the Airtac GAFR Adjustable Filter Regulator GAFR400C15ASJN
The GAFR400C15ASJN is a filter and pressure regulator combined into a single body, eliminating the need for separate GAF filter and GAR regulator units. This 1/2in port model handles up to 0.9 MPa (130 psi) and uses a 40 um element to remove water and solids from the air stream.
Its metal bowl and automatic drain make it suitable for demanding environments where condensate must be expelled without manual intervention. Weighing 880 g, this unit requires proper panel mounting rather than support from the tubing alone, and the balanced regulator mechanism maintains stable outlet pressure as supply varies.
Airtac GAFR Adjustable Filter Regulator GAFR400C15ASJN Technical Specifications
| Model | Airtac GAFR Adjustable Filter Regulator GAFR400C15ASJN |
|---|---|
| Series | GAFR400 filter & regulator |
| Port size | 1/2" (PT thread) |
| Filtering grade | 40 µm |
| Pressure range | 0.15 - 0.9 MPa (20 - 130 psi) |
| Type | Standard |
| 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 | 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 GAFR400C15ASJN
| 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. |
| 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. |
| (blank) | Filtering grade 40 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 GAFR400C15ASJN Is Used
Machine tool coolant systems
Feed a 1/2in header supplying pneumatic valves on CNC machines where consistent 0.6 MPa actuation pressure is needed despite supply fluctuations.
Assembly line pick-and-place
Provide filtered air to vacuum generators and small cylinders on automated assembly stations, with the automatic drain handling condensate from humid shop air.
Test bench instrumentation
Supply clean air at a stable setpoint to pressure gauges and calibration fixtures, where the 40 um element protects sensitive instruments from particulate.
Is the Airtac GAFR Adjustable Filter Regulator GAFR400C15ASJN the Right Air-Prep Unit?
Choose this GAFR400 when you need 1/2in ports with a 100 cc metal bowl that holds roughly 1.7x the condensate of the GAFR300's 60 cc bowl. The automatic drain (A) suits unattended lines, while the missing bracket (J) means you plan to panel-mount it. No gauge is fitted, but the 1/4in gauge connection allows adding one later. This standard type (S) covers 0.15-0.9 MPa, and the PT thread gives an MPa/psi gauge scale if you add a gauge. For lines needing oil downstream, order the 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 GAFR400C15ASJN FAQ
Working pressure is 0.15-0.9 MPa (20-130 psi), max pressure 1.0 MPa (145 psi), proof pressure 1.5 MPa (215 psi), temperature range -5 to 70 C. The drain bowl holds 100 cc, the unit weighs 880 g, and the flow curve is plotted to 7000 L/min at 0.7 MPa inlet.
The N code means no gauge is supplied, leaving a 1/4in gauge connection for adding one later. The J code omits the mounting bracket, which suits installations using existing panel mounts. Both options reduce cost when these features are not needed.
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