Airtac GAFR Adjustable Filter Regulator GAFR300C08ALWK
The AirTAC Airtac GAFR Adjustable Filter Regulator GAFR300C08ALWK 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 gaugeCircular, MPa / psi
- 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 GAFR300C08ALWK
The GAFR300C08ALWK is a filter and regulator combined into a single body, so incoming air is first spun to separate liquid water and solid particles, then regulated to a steady outlet pressure. This 1/4in unit operates in the lower pressure band of 0.15-0.4 MPa (20-58 psi) and uses a 5 um element to trap fine particles for sensitive equipment.
With a metal bowl and automatic drain, this model suits industrial lines where condensate must be expelled without manual attention. The pressed-in self-locking knob resists set-pressure drift from vibration, and the balanced mechanism holds the outlet steady as supply pressure varies.
Airtac GAFR Adjustable Filter Regulator GAFR300C08ALWK Technical Specifications
| Model | Airtac GAFR Adjustable Filter Regulator GAFR300C08ALWK |
|---|---|
| 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. 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 GAFR300C08ALWK
| 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. |
| (blank) | Circular pressure gauge fitted. |
| W | Filtering grade 5 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 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 GAFR300C08ALWK Is Used
Precision valve control
Feed a bank of precision pneumatic valves that need clean, regulated air at a stable lower pressure. The 5 um element protects fine internal passages from particle wear.
Unattended machine line
Mount on a machine header where the automatic drain clears condensate without an operator. The metal bowl handles the environment while the lower pressure range protects sensitive actuators.
Test bench air supply
Supply a test fixture that requires a consistent 0.15-0.4 MPa (20-58 psi) air source. The self-locking knob keeps the setpoint stable during repeated cycles.
Is the Airtac GAFR Adjustable Filter Regulator GAFR300C08ALWK the Right Air-Prep Unit?
Choose this GAFR300 body for 1/4in ports where a 60 cc drain bowl and 500 g mass fit the installation. The metal bowl (C) is a build choice; the common pressure and temperature ratings are identical across PC, nylon and metal bowls, so confirm compatibility with aggressive surroundings. The automatic drain (A) handles wet or unattended lines, while the 5 um element (W) captures finer particles than the standard 40 um grade, at the cost of more frequent element service. The included bracket simplifies mounting, and the fitted gauge reads in MPa/psi on the PT thread. The reverse-flow (reflux) valve (K) is fitted as an ordering difference. If oil is needed downstream, order the matching GAFC300-08 combination instead. Max supply 1.0 MPa 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 GAFR300C08ALWK FAQ
Working pressure range is 0.15-0.4 MPa (20-58 psi). Maximum pressure is 1.0 MPa (145 psi), proof pressure is 1.5 MPa (215 psi), and temperature range is -5 to 70 C. The drain bowl holds 60 cc and the unit weighs 500 g. It has a 1/4in port, 5 um element, automatic drain, and metal bowl.
The L type limits the regulated output to 0.15-0.4 MPa (20-58 psi), which suits applications that must never see higher pressure. The reverse-flow (reflux) valve is fitted as an ordering difference; its function is detailed in the catalogue page not included in our data.
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Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
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Most inquiries answered within 7-8 hours.
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