Airtac GAFR Adjustable Filter Regulator GAFR40010LJK
The AirTAC Airtac GAFR Adjustable Filter Regulator GAFR40010LJK 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 3/8" 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 size3/8"
- 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 GAFR40010LJK
The GAFR40010LJK is a filter and regulator combined into a single body, so incoming air is cleaned and then set to a steady outlet pressure without needing separate units. This model uses a 3/8in port, a 40 um element, and a lower-pressure range of 0.15-0.4 MPa (20-58 psi), making it suitable for applications that need precise low-pressure control.
Its 100 cc condensate bowl and 880 g weight place it in the mid-size class, and the pressed-in self-locking knob resists set-pressure drift from vibration. The diversion structure spins the air to separate liquid water and solid particles into the bowl, protecting downstream equipment.
Airtac GAFR Adjustable Filter Regulator GAFR40010LJK Technical Specifications
| Model | Airtac GAFR Adjustable Filter Regulator GAFR40010LJK |
|---|---|
| Series | GAFR400 filter & regulator |
| Port size | 3/8" (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 GAFR40010LJK
| 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). |
| 10 | Port size 3/8". 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. |
| 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 GAFC400-10 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 · 3/8" · curve to 7000 L/min |
|---|---|
| One size down | GAFR300 |
| One size up | GAFR500 (curve to 8000 L/min) |
| Add a lubricator | GAFC400-10 (F.R.L. combination) |
Where the Airtac GAFR Adjustable Filter Regulator GAFR40010LJK Is Used
Low-pressure precision jigs
Feed a delicate clamping jig that requires a stable 0.3 MPa supply, where the lower-pressure range prevents accidental over-pressurization of sensitive fixtures.
Laboratory air benches
Supply instrument air to a lab bench with a 3/8in line, using the 40 um filter to protect analytical devices from particulates and the regulator to hold a gentle pressure.
Panel-mounted control cabinets
Mount this unit inside a control cabinet where the missing bracket allows direct panel installation, and the compact 880 g body fits without stressing the enclosure.
Is the Airtac GAFR Adjustable Filter Regulator GAFR40010LJK the Right Air-Prep Unit?
Choose this GAFR400 body when you need a 3/8in port and a 100 cc drain bowl, stepping up from the GAFR300's 60 cc bowl for longer intervals between draining. The L type limits the regulated range to 0.15-0.4 MPa (20-58 psi), so confirm your system never needs more than that; the J code means no mounting bracket is included, so plan for a panel mount or existing bracket. The PC bowl is the standard build, the semi-auto plus manual drain covers both automatic and manual draining, and the gauge is fitted with an MPa/psi scale on the PT thread. The K code adds the reverse-flow valve, which is an ordering difference to note. If your line needs oil downstream, order the matching GAFC400-10 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 (3/8" 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 GAFC400-10 combination; do not expect an oil mist from this unit.
Airtac GAFR Adjustable Filter Regulator GAFR40010LJK FAQ
The GAFR40010LJK is a filter & regulator with a 3/8in port, a 40 um element, and a lower-pressure range of 0.15-0.4 MPa (20-58 psi). Maximum pressure is 1.0 MPa (145 psi), proof pressure is 1.5 MPa (215 psi), and the temperature range is -5 to 70 C. It has a 100 cc drain bowl and weighs 880 g.
The K code indicates that a reverse-flow (reflux) valve is fitted to this unit. It is an ordering difference that adds the valve to the assembly; the catalogue defers its function to another page, so it is listed here as a configuration option.
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