Airtac GAFR Adjustable Filter Regulator GAFR300N15ASN
The AirTAC Airtac GAFR Adjustable Filter Regulator GAFR300N15ASN 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 - 0.9 MPa (20 - 130 psi). It has no lubricator, so it adds no oil to the airflow.
- TypeFilter & regulator
- Port size1/2"
- Pressure range0.15 - 0.9 MPa (20 - 130 psi)
- Filtering grade40 µm
- Bowl materialNylon
- Drainautomatic
- Pressure gaugeNot fitted
- Weight500 g
About the Airtac GAFR Adjustable Filter Regulator GAFR300N15ASN
The GAFR300N15ASN is a filter and regulator built as a single body, so it cleans incoming air and holds a steady outlet pressure without needing a separate filter plus regulator. This 1/2in version uses a nylon bowl and a 40 um element, and its automatic drain clears condensate without manual attention.
It regulates from 0.15 to 0.9 MPa (20-130 psi), with a maximum supply of 1.0 MPa (145 psi) and proof pressure of 1.5 MPa (215 psi). The diversion structure spins the air to separate liquid water and solid particles into the 60 cc drain bowl, and the balanced regulator keeps the set pressure stable as supply varies.
Airtac GAFR Adjustable Filter Regulator GAFR300N15ASN Technical Specifications
| Model | Airtac GAFR Adjustable Filter Regulator GAFR300N15ASN |
|---|---|
| Series | GAFR300 filter & regulator |
| Port size | 1/2" (PT thread) |
| Filtering grade | 40 µm |
| Pressure range | 0.15 - 0.9 MPa (20 - 130 psi) |
| Type | Standard |
| 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 GAFR300N15ASN
| 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. |
| S | Standard type — 0.15 - 0.9 MPa (20 - 130 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. |
| (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 GAFR300N15ASN Is Used
Precision valve control
Feed a bank of precision pneumatic valves on a small assembly station where a steady 0.15-0.9 MPa supply keeps actuation consistent. The 40 um element protects valve internals from pipe scale and rust particles.
Machine tool air prep
Mount this 1/2in unit on a CNC machine's air line to filter condensate and regulate pressure for clamping fixtures. The automatic drain removes water continuously during long production runs without operator intervention.
Multi-station workbench
Supply a multi-station workbench where several operators use air tools or cylinders simultaneously. The 60 cc drain bowl and 3500 L/min flow envelope at 0.7 MPa inlet provide a solid foundation for moderate-demand lines.
Is the Airtac GAFR Adjustable Filter Regulator GAFR300N15ASN the Right Air-Prep Unit?
Choose the GAFR300 body when you need a 1/2in port and a 60 cc condensate bowl, which holds more than the 25 cc bowl on a GAFR200 but less than the 100 cc bowl on a GAFR400. 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. This model has the automatic drain, which suits unattended lines, and the mounting bracket is included; the no-gauge code means no gauge is supplied, but the 1/8in gauge connection is ready if you add one later. The 40 um element is the standard grade, while the W option upgrades to 5 um for finer filtration. If your line needs oil downstream, order the matching GAFC300-15 combination instead, since this unit does not lubricate. A 1.0 MPa max supply leaves about 0.1 MPa above the 0.9 MPa top of the range, so plan a supply near 1.0 MPa if you need 0.9 MPa out.
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 GAFR300N15ASN FAQ
Working pressure range is 0.15-0.9 MPa (20-130 psi), maximum supply pressure is 1.0 MPa (145 psi), and proof pressure is 1.5 MPa (215 psi). Temperature range is -5 to 70 C and the unit must not freeze. The drain bowl holds 60 cc and the unit weighs 500 g. It has a 1/2in port, 40 um element, automatic drain, nylon bowl, and no gauge.
The N after the port code means no gauge is supplied with this unit. The gauge connection on the GAFR300 body is 1/8in, so you can add a compatible pressure gauge later to read the set pressure. Without a gauge, the outlet pressure cannot be read directly from the unit.
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