Airtac GAFR Adjustable Filter Regulator GAFR30008LJN
The AirTAC Airtac GAFR Adjustable Filter Regulator GAFR30008LJN 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 - 0.4 MPa (20 - 58 psi). It has no lubricator, so it adds no oil to the airflow.
- TypeFilter & regulator
- Port size1/4"
- Pressure range0.15 - 0.4 MPa (20 - 58 psi)
- Filtering grade40 µm
- Bowl materialPC
- Drainsemi-auto + manual
- Pressure gaugeNot fitted
- Weight500 g
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac GAFR Adjustable Filter Regulator GAFR30008LJN
The GAFR30008LJN combines a filter and a pressure regulator in a single body, so incoming air is spun to separate liquid water and solid particles before a balanced regulator holds the outlet steady. With a 1/4in port and a 500 g mass, this unit suits compact machine builds where space is tight.
This lower-pressure version operates from 0.15 to 0.4 MPa (20-58 psi) and uses a 40 um element. The PC bowl holds 60 cc of condensate, and the unit ships with both semi-auto and manual drains fitted. No gauge is supplied, but the 1/8in gauge connection is ready for one.
Airtac GAFR Adjustable Filter Regulator GAFR30008LJN Technical Specifications
| Model | Airtac GAFR Adjustable Filter Regulator GAFR30008LJN |
|---|---|
| Series | GAFR300 filter & regulator |
| Port size | 1/4" (PT thread) |
| Filtering grade | 40 µm |
| Pressure range | 0.15 - 0.4 MPa (20 - 58 psi) |
| Type | Lower pressure |
| Bowl material | PC |
| 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 GAFR30008LJN
| GAFR300 | GA300 series filter & regulator — sets the port range, drain-bowl capacity and weight. |
|---|---|
| (blank) | Bowl material: PC. 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". |
| (blank) | Drain: Semi-auto drain + manual drain. |
| L | Lower pressure type — 0.15 - 0.4 MPa (20 - 58 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 GAFC300-08 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 GAFR30008LJN Is Used
Precision jig clamping
Feed a single work-holding jig or a small indexing table where a stable 0.15-0.4 MPa supply keeps clamping force consistent without over-pressuring delicate fixtures.
Bench test rigs
Use on a laboratory or QC bench to supply a regulated air signal to a test fixture, where the lower pressure range protects sensitive measurement equipment.
Compact assembly stations
Mount on a small assembly bench to power a single pneumatic actuator or air tool, with the 60 cc bowl reducing how often you need to check condensate.
Is the Airtac GAFR Adjustable Filter Regulator GAFR30008LJN the Right Air-Prep Unit?
Choose the GAFR300 body for 1/4in porting and a 500 g footprint; step up to the GAFR400 for a 3/8in port and a 7000 L/min flow envelope at 0.7 MPa inlet if your line needs more capacity. The PC bowl suits general shop air, while the L-type pressure range caps at 0.4 MPa, so confirm your system never needs more than that. This model omits the mounting bracket (J) and the gauge (N), so plan for panel mounting and add a gauge if you need to read set pressure. The 40 um element handles standard filtration, and the semi-auto plus manual drain gives you both automatic purging and a manual override. If your line needs lubrication downstream, order the matching GAFC300-08 combination instead, as this unit does not add oil. The 1.0 MPa max supply leaves about 0.6 MPa above the 0.4 MPa top of the range, giving you a comfortable margin for pressure fluctuations.
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 GAFR30008LJN FAQ
This filter & regulator has a 1/4in port, a working pressure range of 0.15-0.4 MPa (20-58 psi), a maximum pressure of 1.0 MPa (145 psi), and a proof pressure of 1.5 MPa (215 psi). It operates from -5 to 70 C and must not freeze. The PC bowl holds 60 cc of condensate, the unit weighs 500 g, and it uses a 40 um element.
The N code means no gauge is supplied, but the 1/8in gauge connection is ready for one if you need to read the set pressure. The J code omits the mounting bracket, so this unit is intended for panel mounting or for use with an existing bracket. Both options reduce the initial part count when you already have these components in place.
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Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
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