Airtac GAFR Adjustable Filter Regulator GAFR300N15ALJWK
The AirTAC Airtac GAFR Adjustable Filter Regulator GAFR300N15ALJWK 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
- Drainautomatic
- 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 GAFR300N15ALJWK
The GAFR300N15ALJWK is a filter and regulator combined in a single body, so the incoming air is spun to separate liquid water and solid particles before a balanced regulator sets a steady outlet pressure. This unit carries a 1/2in port, a 0.15-0.4 MPa (20-58 psi) lower-pressure range, and a 5 um element for finer filtration.
It has a nylon condensate bowl with a 60 cc capacity, an automatic drain for unattended operation, and a circular gauge with an MPa/psi scale. The pressed-in self-locking knob resists set-pressure drift from vibration, and the whole 500 g assembly needs a proper panel or frame mount rather than support from the tubing.
Airtac GAFR Adjustable Filter Regulator GAFR300N15ALJWK Technical Specifications
| Model | Airtac GAFR Adjustable Filter Regulator GAFR300N15ALJWK |
|---|---|
| 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 | 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. 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 GAFR300N15ALJWK
| 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". |
| 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. |
| (blank) | Circular pressure gauge fitted. |
| W | Filtering grade 5 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 GAFC300-15 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 GAFR300N15ALJWK Is Used
Precision valve control
Feed a precision pneumatic valve or instrument air circuit that needs fine particle removal and a stable low pressure, with the automatic drain handling condensate without manual checks.
Bench test rig
Supply a lab or test bench where a regulated 0.15-0.4 MPa band is required, and the 5 um element protects sensitive measurement equipment from fine contamination.
Compact machine station
Mount on a small assembly station or single actuator line where the 1/2in port matches existing piping and the 60 cc bowl provides a reasonable service interval.
Is the Airtac GAFR Adjustable Filter Regulator GAFR300N15ALJWK the Right Air-Prep Unit?
Choose the GAFR300 body when you need a 1/2in port and a 60 cc drain bowl, stepping up from the GAFR200's 25 cc bowl if you want fewer drain interventions. The nylon bowl is a build choice with the same 1.0 MPa maximum and -5 to 70 C range as PC or metal, so confirm compatibility for aggressive surroundings. The automatic drain suits wet or unattended lines, while the 5 um element traps finer particles for precision valves at the cost of more frequent service. The J code means no bracket is included, and the K code adds the reverse-flow valve as an ordering difference. The L type tops out at 0.4 MPa, so if the machine may ever need more pressure, this is the wrong part. For lubrication downstream, order the matching GAFC300-15 combination instead. 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 (1/2" 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 GAFR300N15ALJWK FAQ
The pressure range is 0.15-0.4 MPa (20-58 psi), with a maximum pressure of 1.0 MPa (145 psi) and proof pressure of 1.5 MPa (215 psi). The temperature range is -5 to 70 C. The drain bowl capacity is 60 cc and the unit weighs 500 g.
The K code indicates the reverse-flow (reflux) valve is fitted. It is an ordering difference only, and its function is detailed in the catalogue. This model also has an automatic drain and a 5 um element.
Authorized Export Seller
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.
Related AirTAC Air-Preparation Units
Request a Quote for Airtac GAFR Adjustable Filter Regulator GAFR300N15ALJWK
Send us the quantity, thread type (PT / G / NPT) and destination. We confirm price, stock and lead time — usually within 7-8 hours.