Airtac GAFR Adjustable Filter Regulator GAFR300C08ALNW
The AirTAC Airtac GAFR Adjustable Filter Regulator GAFR300C08ALNW 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 1/4" ports, a 5 µm filter element and regulates 0.15 - 0.4 MPa (20 - 58 psi). It has no lubricator, so it adds no oil to the airflow.
- TypeFilter & regulator
- Port size1/4"
- Pressure range0.15 - 0.4 MPa (20 - 58 psi)
- Filtering grade5 µm
- Bowl materialMetal
- Drainautomatic
- Pressure gaugeNot fitted
- Weight500 g
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac GAFR Adjustable Filter Regulator GAFR300C08ALNW
The GAFR300C08ALNW is a filter & regulator from AirTAC, combining a 40 um-equivalent diversion filter and a balanced pressure regulator in a single body. This unit has a 1/4in port, a 5 um element, and a lower-pressure range of 0.15-0.4 MPa (20-58 psi). The metal bowl and automatic drain make it suited for industrial lines where condensate must be expelled without manual attention.
The filter spins incoming air to separate liquid water and solid particles into the 60 cc drain bowl, while the regulator holds the outlet steady as supply pressure varies. The pressed-in self-locking knob resists drift from vibration, and the gauge connection is 1/8in if a gauge is added later. This is a single unit, not a train of parts, and it contains no lubricator.
Airtac GAFR Adjustable Filter Regulator GAFR300C08ALNW Technical Specifications
| Model | Airtac GAFR Adjustable Filter Regulator GAFR300C08ALNW |
|---|---|
| Series | GAFR300 filter & regulator |
| Port size | 1/4" (PT thread) |
| Filtering grade | 5 µm |
| Pressure range | 0.15 - 0.4 MPa (20 - 58 psi) |
| Type | Lower pressure |
| 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 | 60 cc |
| Bracket | Included |
| Weight | 500 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 GAFR300 is 1/8" if you add one. This unit filters and regulates only; it does not add lubrication.
Model Code: Airtac GAFR Adjustable Filter Regulator GAFR300C08ALNW
| GAFR300 | GA300 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). |
| 08 | Port size 1/4". This body offers 08 = 1/4", 10 = 3/8", 15 = 1/2". |
| A | Drain: Automatic drain. |
| L | Lower pressure type — 0.15 - 0.4 MPa (20 - 58 psi). This body offers Standard (S) or Lower pressure (L). |
| (blank) | Mounting bracket included. |
| N | No pressure gauge; 1/8" 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 GAFC300-08 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 | GAFR300 · 1/4" · curve to 3500 L/min |
|---|---|
| One size down | GAFR200 |
| One size up | GAFR400 (curve to 7000 L/min) |
| Add a lubricator | GAFC300-08 (F.R.L. combination) |
Where the Airtac GAFR Adjustable Filter Regulator GAFR300C08ALNW Is Used
Precision jig clamping
Feed a single pneumatic jig or fixture on an assembly bench. The 5 um element protects small valves from fine particles, and the automatic drain keeps the line running unattended.
Instrument air for sensors
Supply clean, regulated air to a pressure sensor or a small pilot valve. The lower-pressure range matches low-setpoint devices, and the metal bowl resists rough handling.
Wet compressor lines
Mount on a drop leg where condensate is frequent. The automatic drain expels water without a manual check, and the 60 cc bowl holds enough between cycles.
Is the Airtac GAFR Adjustable Filter Regulator GAFR300C08ALNW the Right Air-Prep Unit?
Choose the GAFR300 body for 1/4in or 3/8in ports; the 1/4in port here suits small actuators or single machines. For higher flow, step up to the GAFR400 body with a 3/8in or 1/2in port and a 7000 L/min flow envelope at 0.7 MPa inlet. The metal bowl is a build choice, and the automatic drain handles wet lines without manual intervention. The 5 um element traps finer particles than the standard 40 um, but requires more frequent service. The L-type regulator tops out at 0.4 MPa, so confirm the machine never needs more than that. The mounting bracket is included, and the PT thread has an MPa/psi gauge scale, though no gauge is fitted here. If oil is needed downstream, order the matching GAFC300-08 combination instead. The 1.0 MPa max supply leaves about 0.6 MPa above the 0.4 MPa top of the range.
Quick checklist
- ✓ Body size for your peak flow (1/4" 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 60 cc bowl fills.
- check Keep the unit above freezing (-5 to +70 °C, unfreeze).
- check Support the 500 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 GAFC300-08 combination; do not expect an oil mist from this unit.
Airtac GAFR Adjustable Filter Regulator GAFR300C08ALNW FAQ
The working pressure range is 0.15-0.4 MPa (20-58 psi). Maximum pressure is 1.0 MPa (145 psi), and proof pressure is 1.5 MPa (215 psi). Temperature range is -5 to 70 C and must not freeze. The drain bowl holds 60 cc, and the unit weighs 500 g. The port is 1/4in, the element is 5 um, and the drain is automatic.
The L-type regulator is designed for lower setpoints, topping out at 0.4 MPa. If your application may ever need more than that, the standard S-type with a 0.15-0.9 MPa range is the correct choice. The 1.0 MPa max supply leaves about 0.6 MPa above the L-type's top setting.
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Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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