Airtac GAFR Adjustable Filter Regulator GAFR300C08LJK
The AirTAC Airtac GAFR Adjustable Filter Regulator GAFR300C08LJK 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 40 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 grade40 µm
- Bowl materialMetal
- Drainsemi-auto + manual
- 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 GAFR300C08LJK
The GAFR300C08LJK is a filter and pressure regulator combined in a single body, so it cleans incoming air and sets a steady outlet pressure without needing separate components. This unit has a 1/4in port, a lower-pressure range of 0.15-0.4 MPa (20-58 psi), and a 40 um element.
The metal bowl holds 60 cc of condensate and the whole unit weighs 500 g. A circular gauge with an MPa/psi scale is fitted, and the pressed-in self-locking knob resists set-pressure drift from vibration. This model includes a reverse-flow (reflux) valve as an ordering difference.
Airtac GAFR Adjustable Filter Regulator GAFR300C08LJK Technical Specifications
| Model | Airtac GAFR Adjustable Filter Regulator GAFR300C08LJK |
|---|---|
| Series | GAFR300 filter & regulator |
| Port size | 1/4" (PT thread) |
| Filtering grade | 40 µm |
| Pressure range | 0.15 - 0.4 MPa (20 - 58 psi) |
| Type | Lower pressure |
| Bowl material | Metal |
| 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 | Not included (J) |
| 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 GAFR300C08LJK
| 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". |
| (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). |
| J | No bracket (J) — supplied without the mounting bracket. |
| (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 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 GAFR300C08LJK Is Used
Precision pressure setting
Use this lower-pressure regulator for applications that need a gentle, stable air supply below 0.4 MPa, such as a light clamping fixture or a sensitive pneumatic sensor circuit.
Compact machine builds
At 500 g with a 1/4in port, this unit suits small machine frames where a full-size regulator train would be too heavy or take too much rail space.
Maintenance bench setup
Fit this filter-regulator on a service bench to provide clean, regulated air for hand tools or test rigs that must not see pressure above 0.4 MPa.
Is the Airtac GAFR Adjustable Filter Regulator GAFR300C08LJK the Right Air-Prep Unit?
Choose the GAFR300 body for 1/4in or 3/8in ports; it is the mid-size option between the GAFR200 and GAFR400. The metal bowl (C) is a build choice, and the semi-auto plus manual drain means you can drain manually or rely on the semi-auto function. The L type tops out at 0.4 MPa, so if your machine may ever need more pressure, select the standard S type instead. This model omits the mounting bracket (J), so plan for a panel mount or use an existing bracket. The 40 um element is the standard grade, and the PT thread gives an MPa/psi gauge scale. If you need lubrication 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 GAFR300C08LJK FAQ
The 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. The drain bowl holds 60 cc and the unit weighs 500 g.
The L code means the regulated range tops out at 0.4 MPa instead of 0.9 MPa, which suits applications that must not exceed that pressure. The J code means the mounting bracket is not included, so you would use a panel mount or an existing bracket. This model also has a metal bowl and a reverse-flow valve fitted.
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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.
Fast Reply
Most inquiries answered within 7-8 hours.
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