Airtac GAFR Adjustable Filter Regulator GAFR300N15SWK
The AirTAC Airtac GAFR Adjustable Filter Regulator GAFR300N15SWK 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 - 0.9 MPa (20 - 130 psi). It has no lubricator, so it adds no oil to the airflow.
- TypeFilter & regulator
- Port size1/2"
- Pressure range0.15 - 0.9 MPa (20 - 130 psi)
- Filtering grade5 µm
- Bowl materialNylon
- Drainsemi-auto + manual
- Pressure gaugeCircular, MPa / psi
- Weight500 g
About the Airtac GAFR Adjustable Filter Regulator GAFR300N15SWK
The GAFR300N15SWK is a filter & regulator from AirTAC, combining air filtration and pressure regulation within a single body. It handles a 1/2in port and delivers a standard pressure range of 0.15-0.9 MPa (20-130 psi), with a 5 um element for finer particle removal. This unit has a nylon bowl and includes both semi-auto and manual drains, plus a fitted circular gauge.
Its integrated design replaces a separate filter and regulator, reducing potential leak points and saving space on the rail. The diversion structure spins incoming air to separate liquid water and solid particles into the 60 cc drain bowl, while the balanced, self-locking regulator holds the set outlet pressure steady even as supply pressure fluctuates. This model also includes a reverse-flow (reflux) valve as an ordering difference.
Airtac GAFR Adjustable Filter Regulator GAFR300N15SWK Technical Specifications
| Model | Airtac GAFR Adjustable Filter Regulator GAFR300N15SWK |
|---|---|
| Series | GAFR300 filter & regulator |
| Port size | 1/2" (PT thread) |
| Filtering grade | 5 µm |
| Pressure range | 0.15 - 0.9 MPa (20 - 130 psi) |
| Type | Standard |
| 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 GAFR300N15SWK
| 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. |
| S | Standard type — 0.15 - 0.9 MPa (20 - 130 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. |
| 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 GAFR300N15SWK Is Used
Precision valve control
Feed a bank of precision pneumatic valves on a small assembly machine. The 5 um element protects fine internal passages from particle wear, while the balanced regulator keeps the set pressure stable for consistent actuation.
Test bench air supply
Supply clean, regulated air to a laboratory test fixture that checks product seals. The diversion filter removes liquid water and solids from the line, and the included gauge lets operators verify the exact pressure at the point of use.
Single station automation
Power a single-station pick-and-place unit or a dedicated press. The 1/2in port and 60 cc drain bowl offer a compact footprint with enough condensate capacity for a full shift of intermittent operation before manual draining.
Is the Airtac GAFR Adjustable Filter Regulator GAFR300N15SWK the Right Air-Prep Unit?
Choose the GAFR300 body for a 1/2in port with a 60 cc drain bowl and a flow curve plotted to 3500 L/min at 0.7 MPa inlet; it sits between the smaller GAFR200 and the larger GAFR400. The nylon bowl is a build choice, and the 5 um element traps finer particles than the standard 40 um, though it will need more frequent service. This unit ships with the mounting bracket, a circular gauge, and both semi-auto and manual drains; the PT thread means the gauge reads in MPa/psi. The fitted reverse-flow valve is an ordering difference, and if you need lubrication downstream, order the matching GAFC300-15 combination instead. With a 1.0 MPa max supply, you have about 0.1 MPa of headroom above the 0.9 MPa top of the 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 GAFR300N15SWK FAQ
The GAFR300N15SWK is a filter & regulator with a 1/2in port, a 60 cc drain bowl, and a weight of 500 g. Its standard pressure range is 0.15-0.9 MPa (20-130 psi), with a maximum supply of 1.0 MPa (145 psi) and a proof pressure of 1.5 MPa (215 psi). It operates from -5 to 70 C and must not freeze. The unit has a 5 um element, a nylon bowl, and a flow curve plotted to 3500 L/min at 0.7 MPa inlet.
The K code indicates a reverse-flow (reflux) valve is fitted to this unit. It is an ordering difference from models without the K code; the catalogue defers its function to a separate page, so we cannot explain its operation here. If you need to understand its effect on your circuit, please confirm from the AirTAC datasheet.
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