Airtac GAFR Adjustable Filter Regulator GAFR400C10LJWK
The AirTAC Airtac GAFR Adjustable Filter Regulator GAFR400C10LJWK 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 5 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 grade5 µm
- Bowl materialMetal
- Drainsemi-auto + manual
- Pressure gaugeCircular, MPa / psi
- Weight880 g
About the Airtac GAFR Adjustable Filter Regulator GAFR400C10LJWK
The GAFR400C10LJWK is a filter and regulator combined into a single body, eliminating the need for separate GAF filter and GAR regulator units. It spins incoming air to separate liquid water and trap solid particles, then delivers a steady outlet pressure through a balanced, self-locking mechanism. This model has a 3/8in port, a lower pressure range of 0.15-0.4 MPa (20-58 psi), and a 5 um element for finer filtration.
Its metal bowl and 100 cc condensate capacity suit demanding environments, while the fitted circular gauge with MPa/psi scale allows direct pressure reading. The unit weighs 880 g, indicating a size class that needs proper panel mounting. A reverse-flow (reflux) valve is attached, and the semi-auto plus manual drain provides flexible condensate removal.
Airtac GAFR Adjustable Filter Regulator GAFR400C10LJWK Technical Specifications
| Model | Airtac GAFR Adjustable Filter Regulator GAFR400C10LJWK |
|---|---|
| Series | GAFR400 filter & regulator |
| Port size | 3/8" (PT thread) |
| Filtering grade | 5 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 GAFR400C10LJWK
| 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). |
| 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. |
| W | Filtering grade 5 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 GAFR400C10LJWK Is Used
Precision valve control
Feed a bank of precision pneumatic valves on a small assembly station. The 5 um element protects fine internal passages, while the lower pressure range suits delicate actuation tasks.
Instrument air supply
Supply a lab instrument or test rig that requires clean, regulated air at modest pressure. The 5 um filtration and stable lower-pressure output keep readings consistent.
Compact machine header
Mount on a compact machine header to condition air for a single actuator or a small tool. The metal bowl and semi-auto drain handle condensate in a warm production area.
Is the Airtac GAFR Adjustable Filter Regulator GAFR400C10LJWK the Right Air-Prep Unit?
Choose the GAFR400 body for 3/8in port applications needing a 100 cc drain bowl and a flow envelope plotted to 7000 L/min at 0.7 MPa inlet. The metal bowl (C) is a build choice; the 5 um element (W) traps finer particles than the standard 40 um, at the cost of more frequent service. The lower-pressure type (L) tops out at 0.4 MPa, so verify your system never needs more. This unit ships without a bracket (J) for panel-mount installations, and the reverse-flow valve (K) is fitted as an ordering difference. If oil is needed downstream, order the matching GAFC400-10 combination instead. The 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 GAFR400C10LJWK FAQ
This filter & regulator has a 3/8in port, a lower 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, has a 100 cc drain bowl, and weighs 880 g. The element is 5 um, and the bowl is metal.
The 'L' type is designed for applications that only need up to 0.4 MPa (58 psi), offering finer control in that band. The 'K' reflux valve is fitted as an ordering difference; its specific function is detailed in the catalogue. This unit also has a 5 um element and no mounting bracket.
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