Airtac GAFR Adjustable Filter Regulator GAFR300N15LW
The AirTAC Airtac GAFR Adjustable Filter Regulator GAFR300N15LW 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 GAFR300N15LW
The GAFR300N15LW is a filter and regulator combined into a single body, eliminating the need for separate filter and regulator units. It delivers a lower pressure range of 0.15-0.4 MPa (20-58 psi) and uses a 5 um element to trap fine particles, with a nylon bowl for condensate collection.
This 1/2in port model weighs 500 g and includes a circular gauge with an MPa/psi scale. The diversion structure inside spins the air to separate liquid water and solid debris into the 60 cc drain bowl, while the balanced regulator maintains a steady outlet pressure as supply varies.
Airtac GAFR Adjustable Filter Regulator GAFR300N15LW Technical Specifications
| Model | Airtac GAFR Adjustable Filter Regulator GAFR300N15LW |
|---|---|
| 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 GAFR300N15LW
| 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. |
| (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 GAFR300N15LW Is Used
Precision Pressure Control
Ideal for feeding a precision pneumatic regulator or a sensitive valve manifold that requires a stable, lower supply pressure of up to 0.4 MPa, with 5 um filtration to protect fine internal passages.
Laboratory Air Supply
Suitable for a lab bench or test rig where a clean, lower-pressure air supply is needed for experiments or calibration equipment, and the 60 cc bowl is easily monitored for condensate.
Single Station Assembly
Works well on a single assembly station or small machine tool, providing filtered and regulated air to a compact actuator or clamping cylinder without the bulk of a larger filter-regulator unit.
Is the Airtac GAFR Adjustable Filter Regulator GAFR300N15LW the Right Air-Prep Unit?
Choose the GAFR300N15LW when your application needs a lower regulated pressure, topping out at 0.4 MPa (58 psi), and a fine 5 um filter element for sensitive components. The nylon bowl and included bracket suit this 500 g unit for panel mounting, while the semi-auto and manual drains give you flexible condensate removal. If you need a higher pressure range, consider the standard S type, or if oil lubrication is required downstream, order the matching GAFC300-15 combination. With a 1.0 MPa max supply, you have about 0.6 MPa of headroom 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 GAFR300N15LW FAQ
The GAFR300N15LW has a working 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 in temperatures from -5 to 70 C, has a 60 cc drain bowl, and weighs 500 g.
The 'L' designates the lower-pressure type regulator, which has a maximum regulated output of 0.4 MPa (58 psi) instead of the standard 0.9 MPa. This model is suited for applications that only need a lower, stable pressure and should not be used if higher pressures may be required later.
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