Airtac GAFR Adjustable Filter Regulator GAFR300N10LW
The AirTAC Airtac GAFR Adjustable Filter Regulator GAFR300N10LW 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 3/8" 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 size3/8"
- Pressure range0.15 - 0.4 MPa (20 - 58 psi)
- Filtering grade5 µm
- Bowl materialNylon
- Drainsemi-auto + manual
- Pressure gaugeCircular, MPa / psi
- Weight500 g
About the Airtac GAFR Adjustable Filter Regulator GAFR300N10LW
The GAFR300N10LW is a filter and regulator combined into a single body, so it cleans incoming air and sets a steady outlet pressure without needing separate units. This model uses a 3/8in port, a nylon bowl, and a 5 um element that traps finer particles for sensitive equipment.
Its lower-pressure type regulates from 0.15 to 0.4 MPa (20-58 psi), with a maximum supply of 1.0 MPa (145 psi) and proof pressure of 1.5 MPa (215 psi). The 60 cc condensate bowl collects water and solids separated by the diversion structure, and the unit weighs 500 g with the mounting bracket included.
Airtac GAFR Adjustable Filter Regulator GAFR300N10LW Technical Specifications
| Model | Airtac GAFR Adjustable Filter Regulator GAFR300N10LW |
|---|---|
| Series | GAFR300 filter & regulator |
| Port size | 3/8" (PT thread) |
| Filtering grade | 5 µm |
| Pressure range | 0.15 - 0.4 MPa (20 - 58 psi) |
| Type | Lower pressure |
| Bowl material | Nylon |
| Drain type | Semi-auto drain + manual 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 GAFR300N10LW
| GAFR300 | GA300 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). |
| 10 | Port size 3/8". This body offers 08 = 1/4", 10 = 3/8", 15 = 1/2". |
| (blank) | Drain: Semi-auto drain + manual 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. |
| (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 GAFC300-10 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 · 3/8" · curve to 3500 L/min |
|---|---|
| One size down | GAFR200 |
| One size up | GAFR400 (curve to 7000 L/min) |
| Add a lubricator | GAFC300-10 (F.R.L. combination) |
Where the Airtac GAFR Adjustable Filter Regulator GAFR300N10LW Is Used
Precision valve control
Feed a bank of precision pneumatic valves on a small assembly station, where the 5 um element protects fine orifices from particle wear and the lower pressure range suits delicate actuation.
Lab instrument air
Supply a laboratory test rig or measurement instrument that needs clean, regulated air at modest flow, with the 60 cc bowl handling condensate from a moderately wet compressor line.
Single machine tool
Protect a single air tool or small machine cylinder on a workbench, where the 3/8in port and 500 g body mount easily on a frame and the semi-auto drain allows quick manual purging.
Is the Airtac GAFR Adjustable Filter Regulator GAFR300N10LW the Right Air-Prep Unit?
Choose the GAFR300 body for 3/8in ports and a 60 cc drain bowl, which suits medium-flow lines; step up to the GAFR400 for a 100 cc bowl and a flow envelope plotted to 7000 L/min at 0.7 MPa inlet if you need more capacity. The nylon bowl is a build choice with the same 1.0 MPa max and -5 to 70 C rating as PC or metal, so confirm compatibility for aggressive surroundings. This model has the semi-auto plus manual drain, the 5 um element for finer filtration, the mounting bracket, and a fitted circular gauge with MPa/psi scale; the L type caps at 0.4 MPa, so if the machine may ever need more, select the standard S type instead. For lines needing oil downstream, order the matching GAFC300-10 combination rather than this unit. Note that 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 (3/8" 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 GAFC300-10 combination; do not expect an oil mist from this unit.
Airtac GAFR Adjustable Filter Regulator GAFR300N10LW FAQ
The GAFR300N10LW is a filter and regulator with a 3/8in port, working pressure range of 0.15-0.4 MPa (20-58 psi), maximum pressure of 1.0 MPa (145 psi), and proof pressure of 1.5 MPa (215 psi). It operates from -5 to 70 C, has a 60 cc drain bowl, weighs 500 g, uses a 5 um element, and includes a semi-auto plus manual drain.
The L code designates the lower-pressure type, which regulates from 0.15 to 0.4 MPa instead of the standard 0.15 to 0.9 MPa. This suits applications that require a limited, precise outlet pressure and never need more than 0.4 MPa, such as delicate instrumentation or light-duty actuation.
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