Airtac GAFR Adjustable Filter Regulator GAFR300N10SJNW
The AirTAC Airtac GAFR Adjustable Filter Regulator GAFR300N10SJNW 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 3/8" 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 size3/8"
- Pressure range0.15 - 0.9 MPa (20 - 130 psi)
- Filtering grade5 µm
- Bowl materialNylon
- Drainsemi-auto + manual
- Pressure gaugeNot fitted
- Weight500 g
About the Airtac GAFR Adjustable Filter Regulator GAFR300N10SJNW
This AirTAC GAFR300N10SJNW is a filter and regulator combined into a single body, cleaning incoming air and then holding a steady outlet pressure. It has no lubricator and only one bowl, the 60 cc condensate bowl, which is made of nylon here. The unit handles a 3/8in port and a standard 0.15-0.9 MPa (20-130 psi) range, with a fine 5 um element for trapping smaller particles.
The diversion structure spins the air to separate liquid water and solid debris into the bowl, while the balanced regulator keeps the set pressure stable as supply varies. Weighing 500 g, this size class suits panel or frame mounting rather than support from the tubing alone. No gauge is fitted, so the 1/8in gauge connection remains available if you add one later.
Airtac GAFR Adjustable Filter Regulator GAFR300N10SJNW Technical Specifications
| Model | Airtac GAFR Adjustable Filter Regulator GAFR300N10SJNW |
|---|---|
| Series | GAFR300 filter & regulator |
| Port size | 3/8" (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 | 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 GAFR300N10SJNW
| 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). |
| 10 | Port size 3/8". 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. |
| (blank) | No reverse-flow valve. |
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 GAFC300-10 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 · 3/8" · curve to 3500 L/min |
|---|---|
| One size down | GAFR200 |
| One size up | GAFR400 (curve to 7000 L/min) |
| Add a lubricator | GAFC300-10 (F.R.L. combination) |
Where the Airtac GAFR Adjustable Filter Regulator GAFR300N10SJNW Is Used
Precision valve control
Feed a bank of precision pneumatic valves on a small assembly station, where the 5 um element protects fine internal passages from abrasive wear.
Test bench air supply
Provide clean, regulated air to a laboratory test fixture that cycles a single actuator, with the semi-auto drain catching condensate from intermittent use.
Panel-mounted machine section
Mount this 500 g unit on a machine panel to supply a dedicated 3/8in line for a clamping cylinder, relying on the stable regulator for consistent force.
Is the Airtac GAFR Adjustable Filter Regulator GAFR300N10SJNW the Right Air-Prep Unit?
Choose the GAFR300 body for 1/4in to 1/2in ports, with this 3/8in version sitting between the smaller GAFR200 and the larger GAFR400. The nylon bowl is a build choice, not a performance upgrade, and the 5 um element filters finer than the standard 40 um at the cost of more frequent service. This model has both semi-auto and manual drains, no mounting bracket, and no gauge, so plan for a panel mount and an external pressure readout. The PT thread gives an MPa/psi gauge scale, and there is no reverse-flow valve; the K option adds one if needed. For lubrication downstream, order the matching GAFC300-10 combination instead. 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 (3/8" 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 GAFC300-10 combination; do not expect an oil mist from this unit.
Airtac GAFR Adjustable Filter Regulator GAFR300N10SJNW FAQ
The GAFR300N10SJNW is a filter and regulator with a 3/8in port, working pressure range of 0.15-0.9 MPa (20-130 psi), maximum pressure of 1.0 MPa (145 psi), and proof pressure of 1.5 MPa (215 psi). It operates from -5 to 70 C and must not freeze. The nylon drain bowl holds 60 cc, and the unit weighs 500 g with a 5 um filter element.
The J code means the mounting bracket is omitted, so you need a panel or existing bracket for installation. The N after the port means no gauge is supplied, leaving a 1/8in gauge connection for adding one later. This setup suits machines where the operator reads pressure from a central display or where space is tight.
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