Airtac GAFR Adjustable Filter Regulator GAFR300N08ASJNK
The AirTAC Airtac GAFR Adjustable Filter Regulator GAFR300N08ASJNK 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 1/4" 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 size1/4"
- Pressure range0.15 - 0.9 MPa (20 - 130 psi)
- Filtering grade40 µm
- Bowl materialNylon
- Drainautomatic
- Pressure gaugeNot fitted
- Weight500 g
About the Airtac GAFR Adjustable Filter Regulator GAFR300N08ASJNK
The GAFR300N08ASJNK is a filter & regulator that combines air filtration and pressure control in a single body, eliminating the need for separate components. It handles a 1/4in port with a standard pressure range of 0.15-0.9 MPa (20-130 psi) and uses a 40 um element to trap solid particles.
This unit features a nylon bowl and an automatic drain, making it suitable for applications where regular manual maintenance is inconvenient. The integrated diversion structure spins incoming air to separate liquid water and solid debris into the 60 cc condensate bowl, while the balanced regulator maintains a steady outlet pressure as supply varies.
Airtac GAFR Adjustable Filter Regulator GAFR300N08ASJNK Technical Specifications
| Model | Airtac GAFR Adjustable Filter Regulator GAFR300N08ASJNK |
|---|---|
| Series | GAFR300 filter & regulator |
| Port size | 1/4" (PT thread) |
| Filtering grade | 40 µm |
| Pressure range | 0.15 - 0.9 MPa (20 - 130 psi) |
| Type | Standard |
| Bowl material | Nylon |
| Drain type | Automatic 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 GAFR300N08ASJNK
| 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). |
| 08 | Port size 1/4". This body offers 08 = 1/4", 10 = 3/8", 15 = 1/2". |
| A | Drain: Automatic 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 GAFC300-08 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 · 1/4" · curve to 3500 L/min |
|---|---|
| One size down | GAFR200 |
| One size up | GAFR400 (curve to 7000 L/min) |
| Add a lubricator | GAFC300-08 (F.R.L. combination) |
Where the Airtac GAFR Adjustable Filter Regulator GAFR300N08ASJNK Is Used
Precision Fixture Control
Feed a single pneumatic fixture or clamping station on an assembly line, where the 1/4in port and 40 um element provide clean, regulated air to a small actuator.
Machine Tool Air Supply
Supply a lathe or milling machine's air-operated chuck or tool changer, using the automatic drain to handle condensate in a continuously running setup.
Packaging Line Air Prep
Prepare air for a labeling or carton-sealing station that needs steady pressure, with the nylon bowl and automatic drain suiting a production environment.
Is the Airtac GAFR Adjustable Filter Regulator GAFR300N08ASJNK the Right Air-Prep Unit?
Choose the GAFR300 body for 1/4in port applications needing a 500 g unit with a 60 cc drain bowl and flow plotted to 3500 L/min at 0.7 MPa inlet. The nylon bowl offers an alternative to PC or metal, while the automatic drain (A) handles condensate without manual intervention. This model omits the mounting bracket (J) and gauge (N), has a 40 um element, and uses PT threads with an MPa/psi gauge scale. The reverse-flow (reflux) valve (K) is fitted as an ordering difference. If downstream lubrication is required, order the matching GAFC300-08 combination instead. Note that 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 (1/4" 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 GAFC300-08 combination; do not expect an oil mist from this unit.
Airtac GAFR Adjustable Filter Regulator GAFR300N08ASJNK FAQ
This filter & regulator has a 1/4in port, a pressure range of 0.15-0.9 MPa (20-130 psi), a max pressure of 1.0 MPa (145 psi), and a 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. It uses a 40 um element, has an automatic drain, and includes a reverse-flow valve.
The 'J' indicates the mounting bracket is not included, so you need an existing bracket or panel mount. The 'N' after the port code means no gauge is supplied; the gauge connection is 1/8in if you add one later. The set pressure cannot be read without adding a gauge.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC Air-Preparation Units
Request a Quote for Airtac GAFR Adjustable Filter Regulator GAFR300N08ASJNK
Send us the quantity, thread type (PT / G / NPT) and destination. We confirm price, stock and lead time — usually within 7-8 hours.