Airtac GAFR Adjustable Filter Regulator GAFR300C15ALK
The AirTAC Airtac GAFR Adjustable Filter Regulator GAFR300C15ALK 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 materialMetal
- Drainautomatic
- 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 GAFR300C15ALK
The GAFR300C15ALK is a filter and pressure regulator combined into a single body, so incoming air is spun to separate liquid water and solid particles before being set to a steady outlet pressure. This 1/2in unit carries a metal bowl and an automatic drain, with a 40 um element and a working range of 0.15-0.4 MPa (20-58 psi).
Because the filter and regulator share one housing, this part replaces a separate GAF filter plus GAR regulator, reducing the number of joints to seal and saving space on the rail. The pressed-in self-locking knob helps hold the set pressure against vibration, and the balanced mechanism keeps the outlet steady as supply pressure varies.
Airtac GAFR Adjustable Filter Regulator GAFR300C15ALK Technical Specifications
| Model | Airtac GAFR Adjustable Filter Regulator GAFR300C15ALK |
|---|---|
| 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 | Metal |
| 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. 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 GAFR300C15ALK
| GAFR300 | GA300 series filter & regulator — sets the port range, drain-bowl capacity and weight. |
|---|---|
| C | Bowl material: Metal. 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. |
| 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 GAFR300C15ALK Is Used
Precision valve control
Feed a precision pneumatic valve or a small instrument loop that requires a stable, low-pressure supply. The 0.15-0.4 MPa band suits delicate actuators, and the 40 um element protects the valve internals from particle wear.
Wet utility line
Install on a factory air line with frequent condensate. The automatic drain clears the 60 cc metal bowl without manual attention, and the diversion structure drops liquid water out of the flow before regulation.
Compact machine station
Mount this 500 g unit on a machine frame or panel where space is tight. The single-body design replaces two separate components, and the included bracket provides a secure fixing without support from the tubing.
Is the Airtac GAFR Adjustable Filter Regulator GAFR300C15ALK the Right Air-Prep Unit?
Choose this GAFR300 body when you need a 1/2in port and a 60 cc drain bowl, which is double the 25 cc capacity of the smaller GAFR200. The metal bowl suits demanding environments, though the -5 to 70 C limit and 1.0 MPa max pressure are identical across all bowl materials, so confirm compatibility for aggressive surroundings. The automatic drain handles unattended operation or wet lines, while the included bracket simplifies mounting; the fitted circular gauge reads in MPa/psi on the PT thread. The lower-pressure type tops out at 0.4 MPa, so if the machine may ever need more, the standard S type is the correct choice. For lines needing oil downstream, order the matching GAFC300-15 combination instead, as this unit does not lubricate. Note that 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 GAFR300C15ALK FAQ
The GAFR300C15ALK is a filter & regulator with a 1/2in port, a 60 cc drain bowl, and a weight of 500 g. It operates from 0.15-0.4 MPa (20-58 psi), with a maximum pressure of 1.0 MPa (145 psi) and a proof pressure of 1.5 MPa (215 psi). The temperature range is -5 to 70 C, and it must not freeze. It has a 40 um element, an automatic drain, a metal bowl, and a fitted gauge reading MPa/psi.
The K in GAFR300C15ALK indicates that a reverse-flow (reflux) valve is fitted to the unit. This is an ordering difference from models without the K code, and the valve is drawn as a separate pneumatic symbol. The catalogue does not provide functional details for this valve, so its operation is not described here.
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Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
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