Airtac GAFR Adjustable Filter Regulator GAFR40015LJ
The AirTAC Airtac GAFR Adjustable Filter Regulator GAFR40015LJ 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 1/2" 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 size1/2"
- Pressure range0.15 - 0.4 MPa (20 - 58 psi)
- Filtering grade40 µm
- Bowl materialPC
- Drainsemi-auto + manual
- Pressure gaugeCircular, MPa / psi
- Weight880 g
About the Airtac GAFR Adjustable Filter Regulator GAFR40015LJ
The GAFR40015LJ is a filter and regulator combined into one body, removing the need for separate GAF filter and GAR regulator units. This 1/2in model handles a lower pressure band of 0.15-0.4 MPa (20-58 psi) with a 40 um element, and its single 100 cc condensate bowl collects both liquid water and solid particles spun out by the diversion structure.
Weighing 880 g, this unit fits a mid-size machine header or a multi-station line where space is tight. The circular gauge with MPa/psi scale is fitted, and the balanced regulator holds the set outlet pressure steady as supply pressure varies, while the pressed-in self-locking knob resists drift from vibration.
Airtac GAFR Adjustable Filter Regulator GAFR40015LJ Technical Specifications
| Model | Airtac GAFR Adjustable Filter Regulator GAFR40015LJ |
|---|---|
| Series | GAFR400 filter & regulator |
| Port size | 1/2" (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 | 100 cc |
| Bracket | Not included (J) |
| Weight | 880 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 GAFR40015LJ
| GAFR400 | GA400 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). |
| 15 | Port size 1/2". This body offers 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 GAFC400-15 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 | GAFR400 · 1/2" · curve to 7000 L/min |
|---|---|
| One size down | GAFR300 |
| One size up | GAFR500 (curve to 8000 L/min) |
| Add a lubricator | GAFC400-15 (F.R.L. combination) |
Where the Airtac GAFR Adjustable Filter Regulator GAFR40015LJ Is Used
Precision valve control
Feed a bank of precision pneumatic valves on a packaging line that require a stable, lower regulated pressure. The balanced regulator holds the setpoint as line pressure fluctuates, and the 40 um element protects the valve internals from pipe scale.
Machine tool header
Mount this 1/2in unit on a CNC machine header to supply a steady 0.3 MPa to air cylinders and clamps. The 100 cc drain bowl collects condensate from a busy shift, and the semi-auto drain releases it automatically when the machine cycles.
Test rig air supply
Use this filter regulator on a lab test rig where a lower pressure band of 0.15-0.4 MPa is required for sensitive actuators. The 880 g body needs a solid panel mount since no bracket is supplied, and the fitted gauge lets operators verify set pressure at a glance.
Is the Airtac GAFR Adjustable Filter Regulator GAFR40015LJ the Right Air-Prep Unit?
Choose this GAFR40015LJ when your line needs 1/2in ports and a lower 0.15-0.4 MPa (20-58 psi) regulated band. The J code means no mounting bracket is included, so plan for a panel mount or an existing bracket. The PC bowl is the standard build, and the semi-auto plus manual drain gives you both automatic condensate release and a manual override. The 40 um element handles general shop air; if you need finer filtration, select the W option for 5 um. The PT thread comes with an MPa/psi gauge scale. If your downstream equipment requires oil lubrication, order the matching GAFC400-15 combination instead, as this unit does not lubricate. The 1.0 MPa max supply leaves about 0.6 MPa above the 0.4 MPa top of the range, so this unit suits applications with a stable supply near 1.0 MPa.
Quick checklist
- ✓ Body size for your peak flow (1/2" 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 100 cc bowl fills.
- check Keep the unit above freezing (-5 to +70 °C, unfreeze).
- check Support the 880 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 GAFC400-15 combination; do not expect an oil mist from this unit.
Airtac GAFR Adjustable Filter Regulator GAFR40015LJ FAQ
The GAFR40015LJ is a filter & regulator with a 1/2in port, working pressure range of 0.15-0.4 MPa (20-58 psi), maximum pressure of 1.0 MPa (145 psi), proof pressure of 1.5 MPa (215 psi), and temperature range of -5 to 70 C. It has a 100 cc drain bowl, weighs 880 g, and comes with a 40 um element and a fitted circular gauge.
The J code in GAFR40015LJ means the mounting bracket is omitted. This is for installations where the unit will be panel-mounted or attached to an existing bracket structure. If you need the standard bracket, order without the J suffix.
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