Airtac GAFR Adjustable Filter Regulator GAFR300N10SJNK
The AirTAC Airtac GAFR Adjustable Filter Regulator GAFR300N10SJNK 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 GAFR300N10SJNK
The GAFR300N10SJNK is a filter and regulator combined into a single body, eliminating the need for separate GAF and GAR units. It handles a 3/8in port with a working range of 0.15-0.9 MPa (20-130 psi) and uses a 40 um element to trap solids and liquid water.
This version features a nylon bowl, a semi-auto plus manual drain, and no gauge. The unit weighs 500 g and has a 60 cc condensate bowl. A reverse-flow valve is fitted, and the gauge connection is 1/8in if you add one later.
Airtac GAFR Adjustable Filter Regulator GAFR300N10SJNK Technical Specifications
| Model | Airtac GAFR Adjustable Filter Regulator GAFR300N10SJNK |
|---|---|
| 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 GAFR300N10SJNK
| 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. |
| 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 GAFR300N10SJNK Is Used
Precision jig
Feed a single pneumatic jig or fixture on an assembly line with clean, regulated air at a steady pressure. The 3/8in port suits short runs to one actuator.
Test bench
Supply a lab test bench or calibration rig with filtered air. The 40 um element protects sensitive valves, and the manual drain allows controlled condensate release.
Machine tool
Protect a small machine tool's pilot valves from water and particulates. The 500 g body mounts securely on a panel, and the semi-auto drain suits regular maintenance schedules.
Is the Airtac GAFR Adjustable Filter Regulator GAFR300N10SJNK the Right Air-Prep Unit?
Choose the GAFR300N10SJNK for a 3/8in line needing filtration and regulation in one compact body. This model omits the mounting bracket (J code), so plan for panel mounting or an existing bracket. The nylon bowl (N) is a build choice, and the semi-auto plus manual drain requires periodic attention. The 40 um element is the standard grade, and the PT thread uses an MPa/psi gauge scale. The reverse-flow valve (K) is included as an ordering difference. For a larger flow envelope, the GAFR400 offers 7000 L/min at 0.7 MPa inlet, while the GAFR300 is plotted to 3500 L/min at 0.7 MPa inlet. If oil is needed downstream, order the matching GAFC300-10 combination. 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 GAFR300N10SJNK FAQ
The GAFR300N10SJNK is a filter & regulator with a 3/8in port, 0.15-0.9 MPa (20-130 psi) pressure range, 1.0 MPa (145 psi) max, 1.5 MPa (215 psi) proof, -5 to 70 C temperature range, 60 cc drain bowl, and 500 g weight. It has a 40 um element, nylon bowl, semi-auto plus manual drain, no gauge, and a reverse-flow valve.
The J code omits the mounting bracket for panel-mount or existing bracket setups, and the N code means no gauge is supplied. The gauge connection is 1/8in if you add one. The set pressure cannot be read without adding a gauge.
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