Airtac GAFR Adjustable Filter Regulator GAFR300N15ALNK
The AirTAC Airtac GAFR Adjustable Filter Regulator GAFR300N15ALNK 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 gaugeNot fitted
- Weight500 g
About the Airtac GAFR Adjustable Filter Regulator GAFR300N15ALNK
The GAFR300N15ALNK is a filter and regulator combined into a single body, with no lubricator section. It handles a 1/2in port and delivers a lower pressure range of 0.15-0.4 MPa (20-58 psi), filtering through a 40 um element. The nylon bowl and automatic drain make it a self-maintaining unit for condensate removal.
This model includes a reverse-flow (reflux) valve and comes with a mounting bracket, but no gauge is fitted; the 1/8in gauge connection is available if you need to add one. The diversion structure inside spins the air to separate liquid water and solid particles into the 60 cc drain bowl, while the balanced regulator holds the set outlet pressure steady as the supply varies.
Airtac GAFR Adjustable Filter Regulator GAFR300N15ALNK Technical Specifications
| Model | Airtac GAFR Adjustable Filter Regulator GAFR300N15ALNK |
|---|---|
| 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. 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 GAFR300N15ALNK
| 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. |
| 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 GAFC300-15 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 GAFR300N15ALNK Is Used
Precision pressure setting
Set a stable, lower outlet pressure for a sensitive pneumatic control circuit that must not exceed 0.4 MPa, protecting delicate actuators or valves from over-pressure.
Wet line filtration
Use the automatic drain on a compressed air line with high moisture content, where the 60 cc bowl fills quickly and manual draining is impractical.
Compact machine build
Mount this single-body unit on a frame or panel using the included bracket, saving rail width compared to separate filter and regulator components.
Is the Airtac GAFR Adjustable Filter Regulator GAFR300N15ALNK the Right Air-Prep Unit?
Choose this GAFR300 for 1/2in piping where a lower regulated pressure of 0.15-0.4 MPa (20-58 psi) is sufficient. The nylon bowl is a build choice, and the automatic drain suits unattended or wet lines. A mounting bracket is included, but the gauge is omitted, so plan to add one via the 1/8in connection if you need to read the set pressure. The 40 um element is the standard grade, and the PT thread matches common local fittings. The reflux valve is fitted as an ordering difference. If you need lubrication downstream, order the matching GAFC300-15 combination instead. With a 1.0 MPa max supply, you have about 0.6 MPa of headroom above the 0.4 MPa top of this unit's regulated 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 GAFR300N15ALNK FAQ
This filter & regulator has a 1/2in port, a lower pressure range of 0.15-0.4 MPa (20-58 psi), a maximum pressure of 1.0 MPa (145 psi), and a proof pressure of 1.5 MPa (215 psi). It operates from -5 to 70 C, has a 60 cc drain bowl, and weighs 500 g. The element is 40 um, and the bowl is nylon.
The 'L' code sets a lower regulated range of 0.15-0.4 MPa, which is for applications that must not exceed that ceiling. The 'N' after the port code means no gauge is supplied; the 1/8in gauge connection is there if you add one later. This unit also includes a reverse-flow valve, which is an ordering difference.
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