Airtac GAFR Adjustable Filter Regulator GAFR300N15LK
The AirTAC Airtac GAFR Adjustable Filter Regulator GAFR300N15LK 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
- Drainsemi-auto + manual
- Pressure gaugeCircular, MPa / psi
- Weight500 g
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac GAFR Adjustable Filter Regulator GAFR300N15LK
The GAFR300N15LK is a filter and pressure regulator combined into a single body, with no lubricator section. This 1/2in unit handles a lower pressure band of 0.15-0.4 MPa (20-58 psi) and uses a 40 um element to trap solids while a diversion structure spins out liquid water into the 60 cc nylon bowl.
Weighing 500 g, this GAFR300 body is a mid-size choice that replaces a separate filter plus regulator, reducing potential leak points and saving rail space. The pressed-in self-locking knob resists set-pressure drift from vibration, and the included circular gauge with MPa/psi scale lets operators confirm the outlet setting at a glance.
Airtac GAFR Adjustable Filter Regulator GAFR300N15LK Technical Specifications
| Model | Airtac GAFR Adjustable Filter Regulator GAFR300N15LK |
|---|---|
| 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 | 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 GAFR300N15LK
| 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. |
| (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 GAFR300N15LK Is Used
Light assembly stations
Feed a single workbench fixture or a small pneumatic press with clean, regulated air at a gentle 0.15-0.4 MPa, protecting delicate parts from over-force.
Test rigs and lab benches
Supply a consistent lower pressure to a prototype valve or a calibration jig, where the included gauge helps verify the exact setpoint during experiments.
Low-pressure transfer lines
Use on a short branch line feeding a vacuum generator or a soft-touch cylinder, where the 60 cc bowl handles typical condensate between manual checks.
Is the Airtac GAFR Adjustable Filter Regulator GAFR300N15LK the Right Air-Prep Unit?
Choose the GAFR300N15LK when your machine needs a 1/2in port with a lower 0.15-0.4 MPa regulated band, ideal for gentle or sensitive circuits. The nylon bowl suits applications where a clear view of condensate is less critical, while the semi-auto and manual drains give you both automatic purging and a manual backup for wet conditions. This unit ships with the mounting bracket and a fitted gauge, and the 40 um element is the standard grade for general shop air.
The K code adds a reverse-flow (reflux) valve, so confirm your circuit needs this option before ordering. If your line requires oil downstream, the matching GAFC300-15 combination adds a lubricator. 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 GAFR300N15LK FAQ
This filter & regulator has a 1/2in port, a lower pressure range of 0.15-0.4 MPa (20-58 psi), a 1.0 MPa (145 psi) maximum, and a 1.5 MPa (215 psi) proof pressure. 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 K indicates a reverse-flow (reflux) valve is fitted to the GAFR300N15LK. This is an ordering difference from a standard unit; the catalogue does not detail its function in our data, so treat it as a specified option for your circuit design.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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Most inquiries answered within 7-8 hours.
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