Airtac GAFR Adjustable Filter Regulator GAFR400C15ASW
The AirTAC Airtac GAFR Adjustable Filter Regulator GAFR400C15ASW 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 materialMetal
- Drainautomatic
- Pressure gaugeCircular, MPa / psi
- Weight880 g
About the Airtac GAFR Adjustable Filter Regulator GAFR400C15ASW
The GAFR400C15ASW is a filter & regulator with the filter and the regulator in one body, so it replaces a separate GAF filter plus a GAR regulator and removes one set of pipe joints. It uses a diversion structure to spin the air, dropping liquid water and solid particles into the 100 cc metal bowl, then a balanced, self-locking regulator holds the outlet steady as supply pressure varies.
This model has a 1/2in port, a standard pressure range of 0.15-0.9 MPa (20-130 psi), and a 5 um element that traps finer particles for precision valves or instrument air. The 880 g body is a mid-size unit that needs a proper panel or frame mount rather than support from the tubing, and the automatic drain clears condensate without manual attention.
Airtac GAFR Adjustable Filter Regulator GAFR400C15ASW Technical Specifications
| Model | Airtac GAFR Adjustable Filter Regulator GAFR400C15ASW |
|---|---|
| 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 | 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 | 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 GAFR400C15ASW
| 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). |
| (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 GAFR400C15ASW Is Used
Machine station air prep
Feed a single machining station or a small assembly cell with clean, regulated air at a steady pressure, with the 5 um element protecting sensitive valves and the automatic drain handling condensate.
Test rig supply
Supply a bench test rig or instrument air line where the 1/2in port supports moderate flow and the 5 um filter keeps fine particles away from orifices and gauges.
Short production line
Prepare air for a short production line with several actuators, using the 100 cc bowl to reduce drain checks and the balanced regulator to hold set pressure as line demand varies.
Is the Airtac GAFR Adjustable Filter Regulator GAFR400C15ASW the Right Air-Prep Unit?
Choose the body and port first: the GAFR400 with a 1/2in port suits a machine station or small header, while the GAFR300 below it is plotted to 3500 L/min at 0.7 MPa inlet and the GAFR500 above it to 8000 L/min. The metal bowl is a build choice for the environment, and the 5 um element trades finer filtration for more frequent service. This unit has the automatic drain for wet or unattended lines, the standard pressure type, the mounting bracket included, and a fitted circular gauge with an MPa/psi scale on PT threads. If the line needs oil downstream, order the matching GAFC400-15 combination instead, since this unit does not lubricate. Max supply 1.0 MPa leaves about 0.1 MPa above the 0.9 MPa top of the range, so plan a supply near 1.0 MPa if you need 0.9 MPa out.
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 GAFR400C15ASW FAQ
The GAFR400C15ASW is a filter & regulator with a 1/2in port, a standard 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 and must not freeze. The drain bowl holds 100 cc and the unit weighs 880 g.
The W code specifies a 5 um filter element instead of the standard 40 um. This traps far finer particles, which suits precision valves or instrument air, but the finer element will load up faster and need more frequent service or replacement than a 40 um element.
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