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
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.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC Air-Preparation Units
Request a Quote for Airtac GAFR Adjustable Filter Regulator GAFR300N15LK
Send us the quantity, thread type (PT / G / NPT) and destination. We confirm price, stock and lead time — usually within 7-8 hours.