Airtac GAFR Adjustable Filter Regulator GAFR400N15ASW
The AirTAC Airtac GAFR Adjustable Filter Regulator GAFR400N15ASW 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 gaugeCircular, MPa / psi
- Weight880 g
About the Airtac GAFR Adjustable Filter Regulator GAFR400N15ASW
The GAFR400N15ASW is a filter and pressure regulator combined in a single body, eliminating the need for separate units. It handles a 1/2in port and delivers a regulated output from 0.15 to 0.9 MPa (20-130 psi), with a 5 um element for finer filtration.
Its nylon bowl and automatic drain make it suitable for wet or unattended lines, while the 100 cc condensate bowl and 880 g weight define its mid-range size class. The balanced regulator holds the set pressure steady as supply varies, and the diversion structure spins air to separate liquid water and solid particles.
Airtac GAFR Adjustable Filter Regulator GAFR400N15ASW Technical Specifications
| Model | Airtac GAFR Adjustable Filter Regulator GAFR400N15ASW |
|---|---|
| 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 | Included |
| 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 GAFR400N15ASW
| 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). |
| (blank) | Mounting bracket included. |
| (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 GAFR400N15ASW Is Used
Precision valve control
Feed a bank of precision pneumatic valves on a machining center, where the 5 um element protects fine internal passages from particle wear.
Assembly line automation
Supply a multi-station assembly fixture with clean, regulated air at a steady pressure, using the automatic drain to handle condensate in a continuously running line.
Instrument air for test rigs
Provide stable 0.15-0.9 MPa air to a laboratory test bench, where the balanced regulator maintains setpoint despite upstream fluctuations.
Is the Airtac GAFR Adjustable Filter Regulator GAFR400N15ASW the Right Air-Prep Unit?
Choose the GAFR400 body for a 1/2in port and a flow envelope plotted to 7000 L/min at 0.7 MPa inlet, stepping up from the GAFR300's 3500 L/min envelope. The nylon bowl offers a build choice without changing the common 1.0 MPa max pressure or -5 to 70 C temperature range, so confirm compatibility for aggressive surroundings. This model includes the mounting bracket, a fitted circular gauge with MPa/psi scale, and a 5 um element that traps finer particles than the standard 40 um, at the cost of more frequent service. The automatic drain handles condensate without manual intervention, and the standard pressure type covers most applications. If oil is needed downstream, order the matching GAFC400-15 combination instead. With a 1.0 MPa max supply, you have about 0.1 MPa above the 0.9 MPa top of the 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 GAFR400N15ASW FAQ
The GAFR400N15ASW operates from 0.15 to 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). Temperature range is -5 to 70 C. It has a 100 cc drain bowl and weighs 880 g.
The 5 um element traps much finer particles than the standard 40 um grade, making it suitable for precision valves or instrument air. The trade-off is that the finer element will require more frequent servicing or replacement.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models usually ship in 3-4 days.
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