Airtac GAFR Adjustable Filter Regulator GAFR300C08ASJN
The AirTAC Airtac GAFR Adjustable Filter Regulator GAFR300C08ASJN 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 - 0.9 MPa (20 - 130 psi). It has no lubricator, so it adds no oil to the airflow.
- TypeFilter & regulator
- Port size1/4"
- Pressure range0.15 - 0.9 MPa (20 - 130 psi)
- Filtering grade40 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 GAFR300C08ASJN
The GAFR300C08ASJN is a genuine AirTAC filter & regulator, combining both functions in a single body. It cleans incoming air through a diversion structure that spins out liquid water and solid particles, then a balanced regulator holds a steady outlet pressure. This unit has no lubricator; it only filters and regulates. It uses a 1/4in port and a 40 um element, and operates from 0.15 to 0.9 MPa (20-130 psi).
The metal bowl (C) holds 60 cc of condensate and is drained automatically by the A drain, which suits unattended lines. The unit weighs 500 g, and the flow curve is plotted to 3500 L/min at 0.7 MPa inlet. Since the J code omits the mounting bracket, plan for a panel mount or an existing bracket. The N code means no gauge is fitted; the 1/8in gauge connection is available if you add one later.
Airtac GAFR Adjustable Filter Regulator GAFR300C08ASJN Technical Specifications
| Model | Airtac GAFR Adjustable Filter Regulator GAFR300C08ASJN |
|---|---|
| Series | GAFR300 filter & regulator |
| Port size | 1/4" (PT thread) |
| Filtering grade | 40 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 | 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. 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 GAFR300C08ASJN
| 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. |
| S | Standard type — 0.15 - 0.9 MPa (20 - 130 psi). This body offers Standard (S) or Lower pressure (L). |
| J | No bracket (J) — supplied without the mounting bracket. |
| N | No pressure gauge; 1/8" gauge connection. |
| (blank) | Filtering grade 40 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 GAFR300C08ASJN Is Used
Precision jig and fixture
Feed a single precision jig or fixture on an assembly bench. The 1/4in port and 40 um element protect small valves and cylinders from water and particles, while the automatic drain keeps the bowl from filling during long runs.
Test bench air supply
Supply a test bench that needs a steady pressure for gauges or sensors. The balanced regulator holds the set pressure as the shop supply varies, and the metal bowl suits a permanent installation where you do not want to inspect a plastic bowl.
Single-station automation
Run a single-station automation cell with one or two actuators. The 500 g body mounts to a panel or frame, and the automatic drain reduces maintenance visits. The 3500 L/min flow envelope at 0.7 MPa inlet covers typical small-bore cylinder cycles.
Is the Airtac GAFR Adjustable Filter Regulator GAFR300C08ASJN the Right Air-Prep Unit?
Choose the GAFR300 body for 1/4in or 3/8in ports; this model uses 1/4in. The metal bowl is a build choice, and the automatic drain handles wet or unattended lines without manual intervention. The standard pressure type covers 0.15-0.9 MPa (20-130 psi), and the 40 um element is the default grade. The J code means no bracket is included, and N means no gauge is fitted; the 1/8in gauge connection is there if you add one. The thread is PT, so the gauge scale would read MPa/psi. If you need lubrication downstream, order the matching GAFC300-08 combination instead. For sizing, note that 1.0 MPa max supply leaves about 0.1 MPa above the 0.9 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 GAFR300C08ASJN FAQ
The GAFR300C08ASJN is a filter & regulator with a 1/4in port. The pressure range is 0.15-0.9 MPa (20-130 psi), with a max pressure of 1.0 MPa (145 psi) and proof pressure of 1.5 MPa (215 psi). The temperature range is -5 to 70 C. It has a 60 cc drain bowl and weighs 500 g. The element is 40 um, and the drain is automatic.
The N code after the port means no gauge is supplied; the 1/8in gauge connection is available if you add one. The J code means the mounting bracket is omitted, so you need a panel mount or an existing bracket. Both codes reduce the part count for installations that already have these components.
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