Airtac GAFR Adjustable Filter Regulator GAFR300C15SJNWK
The AirTAC Airtac GAFR Adjustable Filter Regulator GAFR300C15SJNWK 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 materialMetal
- Drainsemi-auto + manual
- Pressure gaugeNot fitted
- Weight500 g
About the Airtac GAFR Adjustable Filter Regulator GAFR300C15SJNWK
The GAFR300C15SJNWK combines a diversion-type air filter and a balanced pressure regulator in a single body, saving rail space versus separate GAF and GAR units. This 1/2in version handles 0.15-0.9 MPa (20-130 psi) and uses a 5 um element to trap fine particles for sensitive equipment.
Its 60 cc metal condensate bowl collects separated water and solids, while the pressed-in self-locking knob resists set-pressure drift from vibration. The unit weighs 500 g and is rated for -5 to 70 C, so it must not freeze in service.
Airtac GAFR Adjustable Filter Regulator GAFR300C15SJNWK Technical Specifications
| Model | Airtac GAFR Adjustable Filter Regulator GAFR300C15SJNWK |
|---|---|
| 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 | 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. No gauge is supplied with this model — the gauge connection on a GAFR300 is 1/8" if you add one. This unit filters and regulates only; it does not add lubrication.
Model Code: Airtac GAFR Adjustable Filter Regulator GAFR300C15SJNWK
| 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. |
| S | Standard type — 0.15 - 0.9 MPa (20 - 130 psi). This body offers Standard (S) or Lower pressure (L). |
| J | No bracket (J) — supplied without the mounting bracket. |
| N | No pressure gauge; 1/8" gauge connection. |
| 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 GAFR300C15SJNWK Is Used
Precision valve control
Feed a bank of pneumatic valves on a machining fixture with clean, regulated air. The 5 um element protects fine orifices from particle wear, and the 1/2in port supports multiple actuators.
Assembly line stations
Mount this unit at a dedicated assembly station where tools and clamps need stable pressure. The metal bowl handles routine condensate removal, and the compact body fits tight machine frames.
Test bench supply
Use it on a lab bench to supply a regulated air source for prototype testing. The self-locking knob keeps the setpoint stable during extended runs, and the 60 cc bowl reduces drain frequency.
Is the Airtac GAFR Adjustable Filter Regulator GAFR300C15SJNWK the Right Air-Prep Unit?
Choose the GAFR300 body for 1/2in ports with a 60 cc drain bowl and a flow envelope plotted to 3500 L/min at 0.7 MPa inlet. The metal bowl suits demanding environments while the 5 um element provides finer filtration than the standard 40 um grade. This model omits the mounting bracket (J) and gauge (N), so plan for panel mounting and use the 1/8in gauge connection if you add one later. The semi-auto and manual drains are both fitted, and the reverse-flow (reflux) valve is included as an ordering option. The PT thread carries an MPa/psi gauge scale. If the line needs lubrication downstream, order the matching GAFC300-15 combination instead. A 1.0 MPa max supply leaves about 0.1 MPa above the 0.9 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 GAFR300C15SJNWK FAQ
Working pressure is 0.15-0.9 MPa (20-130 psi), with a 1.0 MPa (145 psi) maximum and 1.5 MPa (215 psi) proof pressure. Temperature range is -5 to 70 C. The drain bowl holds 60 cc and the unit weighs 500 g. It uses a 5 um element and has a 1/2in port.
The N code means no gauge is supplied, leaving a 1/8in gauge connection for adding one later. The J code omits the mounting bracket, which is useful for panel-mount installations or when using an existing bracket. Both options reduce initial cost when not needed.
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