Airtac GAFR Adjustable Filter Regulator GAFR400C15LJ
The AirTAC Airtac GAFR Adjustable Filter Regulator GAFR400C15LJ 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 materialMetal
- Drainsemi-auto + manual
- Pressure gaugeCircular, MPa / psi
- Weight880 g
About the Airtac GAFR Adjustable Filter Regulator GAFR400C15LJ
The GAFR400C15LJ is a filter & regulator in one body, combining a diversion filter and a balanced pressure regulator. It delivers a steady 0.15-0.4 MPa (20-58 psi) outlet from a 1/2in port, with a 40 um element protecting downstream components. The metal bowl holds 100 cc of condensate, and the unit weighs 880 g.
The filter spins incoming air to separate liquid water and solid particles, dropping them into the bowl, while the regulator holds the set pressure as supply varies. This single-piece design replaces a separate filter plus regulator, reducing potential leak points and saving rail space. The pressed-in self-locking knob resists drift from vibration, keeping the setpoint stable.
Airtac GAFR Adjustable Filter Regulator GAFR400C15LJ Technical Specifications
| Model | Airtac GAFR Adjustable Filter Regulator GAFR400C15LJ |
|---|---|
| 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 | Metal |
| 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 GAFR400C15LJ
| GAFR400 | GA400 series filter & regulator — sets the port range, drain-bowl capacity and weight. |
|---|---|
| C | Bowl material: Metal. 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 GAFR400C15LJ Is Used
Precision valve control
Feed a bank of precision pneumatic valves on a machining center. The 0.15-0.4 MPa range gives fine low-pressure control, and the 40 um element protects sensitive pilot stages.
Low-pressure assembly line
Supply a low-pressure circuit for delicate assembly operations, such as part placement or tensioning. The 1/2in port supports multiple actuators while the metal bowl handles frequent condensate.
Test rig air supply
Power a laboratory test fixture that needs a stable, low-pressure air source. The balanced regulator holds the setpoint as shop pressure fluctuates, and the gauge lets operators verify the setting.
Is the Airtac GAFR Adjustable Filter Regulator GAFR400C15LJ the Right Air-Prep Unit?
Choose the GAFR400 body for a 1/2in port with a 100 cc drain bowl and a flow curve plotted to 7000 L/min at 0.7 MPa inlet. The metal bowl (C) suits demanding environments; confirm compatibility for aggressive surroundings. This model has the semi-auto drain plus a manual drain, both fitted, and the 40 um standard element. The L type tops out at 0.4 MPa, so if the machine may ever need more pressure, select the standard S type instead. The J code means no mounting bracket is included, so plan for a panel mount or an existing bracket. The circular gauge is fitted with an MPa/psi scale, and the PT thread matches that scale. If oil is needed downstream, order the matching GAFC400-15 combination instead. 1.0 MPa max supply leaves about 0.6 MPa above the 0.4 MPa top of the range.
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 GAFR400C15LJ FAQ
The GAFR400C15LJ is a filter & regulator with a 1/2in port. Pressure range is 0.15-0.4 MPa (20-58 psi), max pressure is 1.0 MPa (145 psi), and proof pressure is 1.5 MPa (215 psi). Temperature range is -5 to 70 C. The drain bowl holds 100 cc, and the unit weighs 880 g. It has a 40 um element and a metal bowl.
The L code sets a lower pressure range of 0.15-0.4 MPa, suitable for applications that never need more than 0.4 MPa. The J code omits the mounting bracket, which is useful for panel mounting or when using an existing bracket. The metal bowl is specified by the C code, and the gauge is fitted with an MPa/psi scale.
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