Airtac GAFR Adjustable Filter Regulator GAFR30008LJ
The AirTAC Airtac GAFR Adjustable Filter Regulator GAFR30008LJ 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 gaugeCircular, MPa / psi
- 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 GAFR30008LJ
The GAFR30008LJ is a genuine AirTAC filter & regulator with both functions sharing one body, so it replaces a separate filter plus regulator with fewer joints to seal. This lower-pressure model regulates from 0.15 to 0.4 MPa (20-58 psi) and filters to 40 um, with a 60 cc condensate bowl and a 500 g mass that suits a panel or frame mount.
Its diversion structure spins incoming air to drop liquid water and solid particles into the bowl, while the balanced regulator holds the outlet steady as supply pressure varies. The pressed-in self-locking knob resists drift from vibration, and the fitted circular gauge reads on an MPa/psi scale for direct monitoring.
Airtac GAFR Adjustable Filter Regulator GAFR30008LJ Technical Specifications
| Model | Airtac GAFR Adjustable Filter Regulator GAFR30008LJ |
|---|---|
| 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. 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 GAFR30008LJ
| 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. |
| (blank) | Circular pressure gauge fitted. |
| (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 GAFR30008LJ Is Used
Precision pressure setting
Set a stable 0.3 MPa supply for a sensitive pneumatic gauge or test fixture, where the lower pressure range gives finer adjustment resolution than a standard regulator.
Compact machine build
Mount this 500 g unit on a small assembly station frame, using the 1/4in port to feed a single pneumatic cylinder or valve manifold without taking up extra rail width.
Clean dry air feed
Protect a downstream precision valve or air bearing from water droplets and 40 um-plus particles, with the transparent PC bowl letting you see condensate level at a glance.
Is the Airtac GAFR Adjustable Filter Regulator GAFR30008LJ the Right Air-Prep Unit?
Choose the GAFR300 body for 1/4in ports with a 3500 L/min flow envelope at 0.7 MPa inlet, a step up from the GAFR200's 2000 L/min curve if you need more capacity. The PC bowl suits general dry indoor lines, while a metal or nylon bowl is available for other environments. This model ships with both semi-auto and manual drains, so you can drain manually or let it purge automatically; the A code switches to a fully automatic drain. The L type tops out at 0.4 MPa, so if your machine may ever need more pressure, select the standard S type instead. No bracket is included with the J code, meaning you must provide your own panel or frame mounting. The 40 um element handles standard shop air, while the W option upgrades to 5 um for finer filtration. PT threads come with an MPa/psi gauge scale; G or NPT threads change the scale to bar/MPa or psi/bar respectively. If lubrication is needed downstream, order the matching GAFC300-08 combination rather than this unit. For this model, the 1.0 MPa max supply leaves about 0.6 MPa above the 0.4 MPa top of the range, so plan your inlet pressure well above the setpoint.
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 GAFR30008LJ FAQ
The GAFR30008LJ is a filter & regulator with a 1/4in port, regulating from 0.15 to 0.4 MPa (20-58 psi). Maximum pressure is 1.0 MPa (145 psi) and proof pressure is 1.5 MPa (215 psi). Operating temperature is -5 to 70 C. It has a 60 cc drain bowl, weighs 500 g, filters to 40 um, and includes both semi-auto and manual drains. The gauge connection is 1/8in.
The L code sets the regulation range to 0.15-0.4 MPa, which is ideal for low-pressure applications where finer control is needed. The J code omits the mounting bracket, so you must provide your own panel or frame mounting solution. This combination suits installations where the unit is built into an existing structure rather than mounted on a standalone bracket.
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1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
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Most inquiries answered within 7-8 hours.
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