Airtac GAFR Adjustable Filter Regulator GAFR300N10SJK
The AirTAC Airtac GAFR Adjustable Filter Regulator GAFR300N10SJK 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 gaugeCircular, MPa / psi
- Weight500 g
About the Airtac GAFR Adjustable Filter Regulator GAFR300N10SJK
The GAFR300N10SJK is a filter and regulator combined into a single body, cleaning incoming air and holding a steady outlet pressure without needing separate units. It uses a 3/8in port, works across 0.15-0.9 MPa (20-130 psi), and comes with a 40 um element for standard filtration.
Its nylon bowl holds 60 cc of condensate, and the unit weighs 500 g, placing it in the mid-size class for shop-floor lines. The built-in circular gauge shows pressure on an MPa/psi scale, while the semi-auto and manual drains give operators two ways to empty collected water.
Airtac GAFR Adjustable Filter Regulator GAFR300N10SJK Technical Specifications
| Model | Airtac GAFR Adjustable Filter Regulator GAFR300N10SJK |
|---|---|
| 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. 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 GAFR300N10SJK
| 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. |
| (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 GAFC300-10 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 GAFR300N10SJK Is Used
Precision valve control
Feed a bank of pneumatic valves on a small assembly station, where the 40 um element protects sensitive pilot ports and the regulator holds a stable setpoint.
Test bench air supply
Provide filtered, regulated air to a lab fixture checking actuator response, with the gauge letting operators verify pressure at a glance.
Machine tool auxiliary
Supply a clamping circuit on a drill press or milling machine, where the 60 cc bowl handles condensate between shifts and the semi-auto drain offers quick manual release.
Is the Airtac GAFR Adjustable Filter Regulator GAFR300N10SJK the Right Air-Prep Unit?
Choose the GAFR300 body when your line needs 3/8in ports and moderate flow, with the 3500 L/min curve (at 0.7 MPa inlet) as a sizing guide. The nylon bowl suits applications where a transparent PC bowl might not be preferred, while the included semi-auto and manual drains handle routine maintenance. This model has no mounting bracket (J), so plan for panel mounting or an existing support structure. The 40 um element handles general shop air, and the PT threads match standard local fittings. The reverse-flow (reflux) valve is fitted as an ordering option. If downstream lubrication becomes necessary, the matching GAFC300-10 combination adds a lubricator. With a 1.0 MPa max supply, you have about 0.1 MPa above the 0.9 MPa top of the regulated 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 GAFR300N10SJK FAQ
The GAFR300N10SJK is a filter & regulator with a 3/8in port, working range of 0.15-0.9 MPa (20-130 psi), max pressure of 1.0 MPa (145 psi), and proof pressure of 1.5 MPa (215 psi). It operates from -5 to 70 C, has a 60 cc drain bowl, and weighs 500 g. The element grade is 40 um, and the unit includes a semi-auto plus manual drain.
The K indicates a reverse-flow (reflux) valve is fitted to the GAFR300N10SJK. This is an ordering difference from the standard version. The catalogue does not detail its function in our data, so treat it as a specified option for your application.
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