Airtac GAFR Adjustable Filter Regulator GAFR300N08ALJNK
The AirTAC Airtac GAFR Adjustable Filter Regulator GAFR300N08ALJNK 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 materialNylon
- Drainautomatic
- Pressure gaugeNot fitted
- Weight500 g
About the Airtac GAFR Adjustable Filter Regulator GAFR300N08ALJNK
The GAFR300N08ALJNK is a genuine AirTAC filter and regulator combined into a single body, saving rail space and reducing potential leak points versus separate units. This model uses a 1/4in port, a nylon bowl, and a 40 um element, with a lower-pressure range of 0.15-0.4 MPa (20-58 psi).
Its diversion structure spins incoming air to separate liquid water and solid particles into the 60 cc drain bowl. The balanced, self-locking regulator mechanism helps maintain the set outlet pressure even as supply pressure fluctuates, without needing a separate filter upstream.
Airtac GAFR Adjustable Filter Regulator GAFR300N08ALJNK Technical Specifications
| Model | Airtac GAFR Adjustable Filter Regulator GAFR300N08ALJNK |
|---|---|
| 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 | Nylon |
| 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 GAFR300N08ALJNK
| 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). |
| 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). |
| 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. |
| 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 GAFR300N08ALJNK Is Used
Precision Fixture
Feed a single pneumatic fixture or a small clamping cylinder on a benchtop assembly station, where a steady 0.15-0.4 MPa outlet is required and space is tight.
Test Bench Air
Supply a low-pressure test jig or a calibration setup that must not see more than 0.4 MPa, using the automatic drain to handle condensate without manual checks.
Light Automation Cell
Protect a small valve manifold or a single-axis actuator in a light automation cell, filtering water and solids while keeping the downstream pressure within a safe low band.
Is the Airtac GAFR Adjustable Filter Regulator GAFR300N08ALJNK the Right Air-Prep Unit?
Choose this GAFR300 for 1/4in lines where a compact, combined filter-regulator is needed; it weighs 500 g and has a 60 cc drain bowl. The nylon bowl (N) is a build choice, and the automatic drain (A) suits unattended operation or wet lines. This lower-pressure (L) version tops out at 0.4 MPa, so confirm your system never needs more. The J code means no bracket is included; the N after the port means no gauge is fitted, but the 1/8in gauge connection is ready for one. The K code adds the reverse-flow (reflux) valve as an ordering difference. If oil is needed downstream, order the matching GAFC300-08 combination instead. With a 1.0 MPa max supply, you have about 0.6 MPa of headroom above this unit's 0.4 MPa regulated ceiling.
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 GAFR300N08ALJNK FAQ
This filter & regulator has a 1/4in port, a 0.15-0.4 MPa (20-58 psi) working range, a 1.0 MPa (145 psi) max pressure, and a 1.5 MPa (215 psi) proof pressure. It operates from -5 to 70 C, has a 60 cc drain bowl, and weighs 500 g. The element is 40 um, and it has an automatic drain.
The J code means the mounting bracket is not included, so you must use an existing bracket or panel-mount the unit. The N after the port means no gauge is supplied; the 1/8in gauge connection is present if you want to add one later to read the set pressure.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC Air-Preparation Units
Request a Quote for Airtac GAFR Adjustable Filter Regulator GAFR300N08ALJNK
Send us the quantity, thread type (PT / G / NPT) and destination. We confirm price, stock and lead time — usually within 7-8 hours.