Airtac GAFR Adjustable Filter Regulator GAFR300N15LJW
The AirTAC Airtac GAFR Adjustable Filter Regulator GAFR300N15LJW 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 1/2" 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 size1/2"
- 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 GAFR300N15LJW
The GAFR300N15LJW 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 1/2in version with a nylon bowl and 5 um element delivers a lower pressure band of 0.15-0.4 MPa (20-58 psi), making it suitable for delicate circuits that must not see higher forces.
Because the filter and regulator share one housing, this unit replaces what would otherwise be two separate components, reducing potential leak points and saving space on the rail. The pressed-in self-locking knob holds the set pressure even when the machine vibrates, and the 60 cc condensate bowl collects what the diversion structure removes from the airstream.
Airtac GAFR Adjustable Filter Regulator GAFR300N15LJW Technical Specifications
| Model | Airtac GAFR Adjustable Filter Regulator GAFR300N15LJW |
|---|---|
| Series | GAFR300 filter & regulator |
| Port size | 1/2" (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 | 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 GAFR300N15LJW
| 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). |
| 15 | Port size 1/2". 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. |
| 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 GAFC300-15 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 · 1/2" · curve to 3500 L/min |
|---|---|
| One size down | GAFR200 |
| One size up | GAFR400 (curve to 7000 L/min) |
| Add a lubricator | GAFC300-15 (F.R.L. combination) |
Where the Airtac GAFR Adjustable Filter Regulator GAFR300N15LJW Is Used
Low-pressure assembly tools
Feed a delicate screwdriver or press that must not exceed 0.4 MPa, with the 5 um element protecting the tool's internal pilot valves from fine wear particles.
Laboratory air benches
Supply a test fixture or small pneumatic gripper on a lab bench where the lower pressure range prevents over-force on fragile samples, and the nylon bowl resists common cleaning agents.
Compact machine stations
Mount this 500 g unit on a small panel to regulate a single-axis positioning table, using the semi-auto drain for scheduled maintenance in a clean workshop.
Is the Airtac GAFR Adjustable Filter Regulator GAFR300N15LJW the Right Air-Prep Unit?
Choose the GAFR300 body for 1/2in porting with a 60 cc drain bowl and 500 g mass, a step up from the GAFR200's 25 cc bowl if you need more condensate capacity between drains. The nylon bowl (N) is a build choice with the same 1.0 MPa maximum and -5 to 70 C rating as PC or metal versions, so confirm compatibility for your specific environment. This model carries the 5 um element (W) for finer filtration than the standard 40 um, which suits precision valves but will require more frequent element service. The semi-auto plus manual drain (blank) means you can empty the bowl on a schedule or manually when needed, while the L-type regulator tops out at 0.4 MPa for low-pressure applications. No bracket (J) is included, so plan for a panel mount or an existing bracket, and the fitted gauge reads in MPa/psi on the PT thread. If your line needs oil downstream, order the matching GAFC300-15 combination instead, since this unit does not lubricate. The 1.0 MPa max supply leaves about 0.6 MPa above the 0.4 MPa top of the range, so you have ample inlet pressure to work with.
Quick checklist
- ✓ Body size for your peak flow (1/2" 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 GAFC300-15 combination; do not expect an oil mist from this unit.
Airtac GAFR Adjustable Filter Regulator GAFR300N15LJW FAQ
The GAFR300N15LJW is a filter & regulator with a 1/2in 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 and must not freeze. The drain bowl holds 60 cc and the unit weighs 500 g. It comes with a 5 um element, semi-auto plus manual drain, and a fitted gauge reading MPa/psi.
The L in the code indicates the lower-pressure type, which regulates from 0.15 to 0.4 MPa instead of the standard 0.15-0.9 MPa, making it ideal for applications that must not exceed 0.4 MPa. The W code specifies a 5 um filtering element, which traps much finer particles than the standard 40 um, protecting sensitive equipment like precision valves or instrument air circuits, though it will need more frequent servicing.
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 GAFR300N15LJW
Send us the quantity, thread type (PT / G / NPT) and destination. We confirm price, stock and lead time — usually within 7-8 hours.