Airtac GAFR Adjustable Filter Regulator GAFR400N15ASK
The AirTAC Airtac GAFR Adjustable Filter Regulator GAFR400N15ASK 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 materialNylon
- Drainautomatic
- Pressure gaugeCircular, MPa / psi
- Weight880 g
About the Airtac GAFR Adjustable Filter Regulator GAFR400N15ASK
The GAFR400N15ASK is a filter and regulator combined into a single body, so it cleans incoming air and stabilizes outlet pressure in one compact unit. It has no lubricator and only one bowl, the 100 cc condensate bowl, which simplifies installation and maintenance.
This version uses a 1/2in port, a standard 0.15-0.9 MPa (20-130 psi) range, a 40 um element, and a nylon bowl. The automatic drain and reverse-flow valve are fitted, and the included circular gauge reads in MPa/psi. Weighing 880 g, it suits medium-sized machine headers or multi-tool stations.
Airtac GAFR Adjustable Filter Regulator GAFR400N15ASK Technical Specifications
| Model | Airtac GAFR Adjustable Filter Regulator GAFR400N15ASK |
|---|---|
| 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 | 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 GAFR400N15ASK
| 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. |
| (blank) | Filtering grade 40 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 GAFR400N15ASK Is Used
Machine tool air supply
Feed a CNC lathe or milling machine's pneumatic clamping system with filtered, regulated air at a steady 0.15-0.9 MPa, while the automatic drain removes condensate without stopping production.
Assembly line workstations
Supply a multi-station assembly bench where several operators need consistent pressure for pneumatic screwdrivers or presses, with the 100 cc bowl reducing drain frequency.
Packaging line actuators
Run a series of packaging machine cylinders and grippers from one regulated source, using the 1/2in port to handle the flow demand of rapid cycling.
Is the Airtac GAFR Adjustable Filter Regulator GAFR400N15ASK the Right Air-Prep Unit?
Choose the GAFR400 body when you need 1/2in ports and a flow envelope plotted to 7000 L/min at 0.7 MPa inlet, which is double the 3500 L/min of the smaller GAFR300. The nylon bowl is a build choice, while the automatic drain handles wet or unattended lines without manual attention. The standard pressure type covers 0.15-0.9 MPa, the bracket is included, and the 40 um element is the default. The PT thread sets the gauge scale to MPa/psi, and the K code means a reverse-flow valve is fitted, which is an ordering difference only. If oil is needed downstream, order the matching GAFC400-15 combination instead. Since the maximum supply pressure is 1.0 MPa, that leaves about 0.1 MPa above the 0.9 MPa top of the regulated range, so plan your inlet pressure near the maximum to reach the highest setpoint.
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 GAFR400N15ASK FAQ
The GAFR400N15ASK is a filter & regulator with a 1/2in port, a working pressure range of 0.15-0.9 MPa (20-130 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 element is 40 um, the bowl is nylon, and it has an automatic drain.
The K code indicates that a reverse-flow (reflux) valve is fitted to the GAFR400N15ASK. This is an ordering difference that changes the pneumatic symbol; the catalogue does not detail its function in our data. The unit still filters and regulates, and it does not lubricate.
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