Airtac GAFR Adjustable Filter Regulator GAFR300C15LJK
The AirTAC Airtac GAFR Adjustable Filter Regulator GAFR300C15LJK 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
- 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 GAFR300C15LJK
The GAFR300C15LJK is a filter and regulator combined into a single body, so incoming air is spun to separate liquid water and trap solid particles before a balanced regulator sets a steady outlet pressure. This 1/2in model operates in the lower 0.15-0.4 MPa (20-58 psi) band and uses a 40 um element, with a metal bowl and both semi-auto and manual drains fitted.
Because the filter and regulator share one housing, this unit replaces a separate GAF filter plus GAR regulator, which means fewer joints to seal and less rail width than two parts. The pressed-in self-locking knob resists set-pressure drift from vibration, and the circular gauge with clip and magnifier shows the outlet pressure on an MPa/psi scale.
Airtac GAFR Adjustable Filter Regulator GAFR300C15LJK Technical Specifications
| Model | Airtac GAFR Adjustable Filter Regulator GAFR300C15LJK |
|---|---|
| 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 | 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 | Not included (J) |
| 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 GAFR300C15LJK
| 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". |
| (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). |
| J | No bracket (J) — supplied without the mounting bracket. |
| (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 GAFR300C15LJK Is Used
Low-pressure jig actuation
Feed a single clamping jig or a small indexing fixture that runs on a regulated 0.15-0.4 MPa circuit, where the metal bowl resists rough handling and the 1/2in port keeps the supply line short.
Bench test rigs
Supply a test bench with a clean, stable air supply for gauges or leak-test tooling that needs a lower pressure ceiling, using the fitted gauge to verify the setpoint directly.
Light assembly stations
Protect a single pneumatic screwdriver or a small parts feeder on an assembly line, where the 40 um element filters particles and the semi-auto drain lets an operator clear condensate on schedule.
Is the Airtac GAFR Adjustable Filter Regulator GAFR300C15LJK the Right Air-Prep Unit?
Choose the GAFR300 body for 1/2in ports and a 60 cc condensate bowl, which holds about 2.4x the condensate of the GAFR200's 25 cc bowl, so it needs draining less often. The metal bowl is a build choice for the environment, though the 1.0 MPa maximum and -5 to 70 C temperature range are identical across all bowl materials, so confirm compatibility for aggressive surroundings. This model has no mounting bracket (J), so plan for a panel mount or an existing bracket, and it includes the reverse-flow (reflux) valve as an ordering difference. The lower-pressure type tops out at 0.4 MPa, so if the machine may ever need more, the standard type is the right part; the semi-auto and manual drains are both fitted here, and the 40 um element suits general shop air. If the line needs oil downstream, order the matching GAFC300-15 combination instead, since this unit does not lubricate. 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 GAFR300C15LJK FAQ
The GAFR300C15LJK is a filter and regulator with a 1/2in port, a 60 cc condensate bowl, and a weight of 500 g. It operates in the lower pressure range of 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.
The K in GAFR300C15LJK indicates that a reverse-flow (reflux) valve is fitted. This is an ordering difference from models without the K code; the catalogue defers the function of this valve to a separate page, so no operational details are specified here.
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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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