Airtac GAFR Adjustable Filter Regulator GAFR300N15LWK
The AirTAC Airtac GAFR Adjustable Filter Regulator GAFR300N15LWK 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 GAFR300N15LWK
The GAFR300N15LWK is a filter and pressure regulator combined into a single body, with no lubricator section. It handles a 1/2in port and uses a nylon bowl, with the filter element rated at 5 um for finer particle removal. The lower-pressure type regulates from 0.15 to 0.4 MPa (20-58 psi), and the unit weighs 500 g with a 60 cc condensate bowl.
This model includes a circular gauge with MPa/psi scale and a mounting bracket. A reverse-flow (reflux) valve is fitted as an ordering difference. The diversion structure spins incoming air to separate liquid water and solid particles into the bowl, while the balanced regulator holds the set outlet pressure steady as supply varies.
Airtac GAFR Adjustable Filter Regulator GAFR300N15LWK Technical Specifications
| Model | Airtac GAFR Adjustable Filter Regulator GAFR300N15LWK |
|---|---|
| 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 | 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 GAFR300N15LWK
| 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). |
| (blank) | Mounting bracket included. |
| (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 GAFR300N15LWK Is Used
Precision valve actuation
Feeds a single 1/2in actuator on a precision assembly station where the 5 um element protects fine valve internals and the lower pressure range suits delicate operations.
Bench test rigs
Supplies a laboratory test fixture requiring stable low pressure below 0.4 MPa, with the gauge allowing direct reading of the set point.
Light machine tool
Filters and regulates air for a small machining center's clamping circuit, where the 60 cc bowl handles typical condensate between shifts.
Is the Airtac GAFR Adjustable Filter Regulator GAFR300N15LWK the Right Air-Prep Unit?
Choose the GAFR300 body for 1/2in ports with a 60 cc drain bowl and a flow curve plotted to 3500 L/min at 0.7 MPa inlet. The nylon bowl is a build choice; the common spec of 1.0 MPa max and -5 to 70 C applies to all bowl materials, so confirm compatibility for aggressive surroundings. This model has the semi-auto and manual drains both fitted, the lower-pressure type (0.15-0.4 MPa), a 5 um element, the mounting bracket included, a gauge fitted, PT thread with MPa/psi scale, and the reflux valve. If oil is needed downstream, the matching GAFC300-15 combination adds a lubricator. The 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 GAFR300N15LWK FAQ
Pressure range is 0.15-0.4 MPa (20-58 psi), max pressure 1.0 MPa (145 psi), proof pressure 1.5 MPa (215 psi), temperature range -5 to 70 C. The drain bowl capacity is 60 cc and the unit weighs 500 g. It has a 5 um filter element and a 1/2in port.
The L type regulates from 0.15 to 0.4 MPa, for applications that never need more than that. The reflux (reverse-flow) valve is fitted as an ordering difference; its detailed function is covered in the catalogue page not included in our data.
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