Airtac GAFR Adjustable Filter Regulator GAFR300N15AL
The AirTAC Airtac GAFR Adjustable Filter Regulator GAFR300N15AL 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 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 size1/2"
- Pressure range0.15 - 0.4 MPa (20 - 58 psi)
- Filtering grade40 µm
- Bowl materialNylon
- Drainautomatic
- Pressure gaugeCircular, MPa / psi
- Weight500 g
About the Airtac GAFR Adjustable Filter Regulator GAFR300N15AL
The GAFR300N15AL is a filter and regulator combined into a single body, saving space and reducing potential leak points compared to separate units. It handles a 1/2in port and delivers a lower pressure range of 0.15-0.4 MPa (20-58 psi), with a 40 um element for standard filtration.
Its nylon bowl and automatic drain make it suitable for applications where condensate needs to be expelled without manual intervention. The unit weighs 500 g and features a diversion structure that spins air to separate liquid water and solid particles, protecting downstream equipment.
Airtac GAFR Adjustable Filter Regulator GAFR300N15AL Technical Specifications
| Model | Airtac GAFR Adjustable Filter Regulator GAFR300N15AL |
|---|---|
| Series | GAFR300 filter & regulator |
| Port size | 1/2" (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 | Included |
| 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 GAFR300N15AL
| 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). |
| (blank) | Mounting bracket included. |
| (blank) | Circular pressure gauge fitted. |
| (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 GAFC300-15 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 GAFR300N15AL Is Used
Precision Regulated Air
Ideal for feeding a single precision pneumatic actuator or a small indexing table where a stable, lower pressure is required for delicate operations.
Compact Machine Builds
Its single-body design is well-suited for compact machine builds where space is at a premium and a separate filter and regulator would be difficult to mount.
Unattended Lines
The automatic drain makes it a strong choice for remote or hard-to-access points on a production line, ensuring condensate is expelled without scheduled manual draining.
Is the Airtac GAFR Adjustable Filter Regulator GAFR300N15AL the Right Air-Prep Unit?
Choose the GAFR300N15AL when you need a 1/2in port with a lower pressure regulation band of 0.15-0.4 MPa (20-58 psi). The nylon bowl offers an alternative to standard PC, while the automatic drain (A) is ideal for unattended operation. This model includes the mounting bracket and a circular gauge with an MPa/psi scale, and uses a standard 40 um element. For finer filtration, select the 'W' option for a 5 um element. If your system requires lubrication downstream, you would need the GAFC300-15 combination, as this unit does not lubricate. Note that 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 GAFR300N15AL FAQ
The GAFR300N15AL is a filter & regulator with a 1/2in port. Its pressure range is 0.15-0.4 MPa (20-58 psi), with a max pressure of 1.0 MPa (145 psi) and proof pressure of 1.5 MPa (215 psi). It operates in temperatures from -5 to 70 C, has a 60 cc drain bowl, and weighs 500 g.
The 'L' designates a Lower-pressure type regulator, with a maximum regulated output of 0.4 MPa (58 psi). This is suitable for applications requiring a low, stable pressure. If your machine might ever need more than 0.4 MPa, this would be the wrong part, and you would need the standard type (S) which regulates up to 0.9 MPa.
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