Airtac GAFR Adjustable Filter Regulator GAFR300N10SJN
The AirTAC Airtac GAFR Adjustable Filter Regulator GAFR300N10SJN 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 40 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 grade40 µm
- Bowl materialNylon
- Drainsemi-auto + manual
- Pressure gaugeNot fitted
- Weight500 g
About the Airtac GAFR Adjustable Filter Regulator GAFR300N10SJN
The GAFR300N10SJN is a filter and regulator combined into a single body, so it cleans incoming air and stabilizes outlet pressure without needing separate components. This 3/8in version operates from 0.15 to 0.9 MPa (20-130 psi) with a 40 um element, and its nylon bowl collects condensate.
Because the filter and regulator share one housing, there are fewer potential leak points than with a separate GAF filter plus GAR regulator. The pressed-in self-locking knob holds the set pressure steady even when the machine vibrates, and the diversion structure spins the air to drop liquid water and solid particles into the 60 cc drain bowl.
Airtac GAFR Adjustable Filter Regulator GAFR300N10SJN Technical Specifications
| Model | Airtac GAFR Adjustable Filter Regulator GAFR300N10SJN |
|---|---|
| Series | GAFR300 filter & regulator |
| Port size | 3/8" (PT thread) |
| Filtering grade | 40 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 GAFR300N10SJN
| 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. |
| (blank) | Filtering grade 40 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 GAFR300N10SJN Is Used
Precision valve control
Feed a single precision pneumatic valve on a small assembly fixture where stable pressure matters and the 40 um element protects the valve pilot.
Test bench air supply
Supply clean, regulated air to a manual test station with a 3/8in line, using the semi-auto drain to periodically purge condensate from the 60 cc bowl.
Machine tool auxiliary
Power a clamping cylinder on a light-duty machine tool where the 500 g body mounts to a frame and the self-locking knob resists vibration drift.
Is the Airtac GAFR Adjustable Filter Regulator GAFR300N10SJN the Right Air-Prep Unit?
Choose this GAFR300 body for 3/8in piping where a 500 g unit with a 60 cc condensate bowl suits the duty cycle. The nylon bowl is a build choice with the same 1.0 MPa max pressure and -5 to 70 C range as PC or metal versions, so confirm compatibility with any aggressive fluids in your environment. This model ships with both semi-auto and manual drains, no mounting bracket (J), and no gauge - the 1/8in gauge connection is ready if you add one later. The standard S type covers 0.15-0.9 MPa, and the PT thread gives an MPa/psi gauge scale. If your line needs oil downstream, order the matching GAFC300-10 combination instead. The 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 GAFR300N10SJN FAQ
Pressure range is 0.15-0.9 MPa (20-130 psi), max pressure 1.0 MPa (145 psi), proof pressure 1.5 MPa (215 psi), temperature -5 to 70 C. The drain bowl holds 60 cc and the unit weighs 500 g. It has a 3/8in port, 40 um element, nylon bowl, semi-auto plus manual drain, no gauge, and no bracket.
The J code means the mounting bracket is omitted, so you can panel-mount it or use an existing bracket. The N after the port means no gauge is supplied; the 1/8in gauge connection is there if you add one later. Without a gauge, you cannot read the set pressure directly.
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