Airtac GAFR Adjustable Filter Regulator GAFR400C10LJNW
The AirTAC Airtac GAFR Adjustable Filter Regulator GAFR400C10LJNW 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 gaugeNot fitted
- Weight880 g
About the Airtac GAFR Adjustable Filter Regulator GAFR400C10LJNW
The GAFR400C10LJNW is a filter & regulator with both functions in one body, so it replaces a separate filter plus regulator with a single compact unit. It delivers a lower pressure range of 0.15-0.4 MPa (20-58 psi) and filters to 5 um, making it suitable for sensitive equipment that needs fine filtration.
This model has a metal bowl, a 100 cc condensate capacity, and weighs 880 g. The 3/8" port and 7000 L/min flow envelope (plotted at 0.7 MPa inlet) place it in the mid-size class, where the metal bowl suits demanding environments. The semi-auto plus manual drain gives you both automatic dumping and manual control.
Airtac GAFR Adjustable Filter Regulator GAFR400C10LJNW Technical Specifications
| Model | Airtac GAFR Adjustable Filter Regulator GAFR400C10LJNW |
|---|---|
| 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. No gauge is supplied with this model — the gauge connection on a GAFR400 is 1/4" if you add one. This unit filters and regulates only; it does not add lubrication.
Model Code: Airtac GAFR Adjustable Filter Regulator GAFR400C10LJNW
| 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. |
| N | No pressure gauge; 1/4" gauge connection. |
| W | Filtering grade 5 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 GAFC400-10 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 GAFR400C10LJNW Is Used
Precision valve control
Feed a bank of precision pneumatic valves that require clean, regulated air at a stable lower pressure. The 5 um element protects fine internal passages from particle wear.
Laboratory air supply
Supply a lab bench with filtered air at a controlled low pressure for experiments or sensitive instruments. The metal bowl resists accidental knocks in a busy workspace.
Light assembly line
Power small actuators on a light assembly line where consistent low pressure is critical. The 100 cc bowl handles condensate from moderate moisture loads without frequent draining.
Is the Airtac GAFR Adjustable Filter Regulator GAFR400C10LJNW the Right Air-Prep Unit?
Choose the GAFR400 body for a 3/8" port with a 100 cc drain bowl and 880 g mass, stepping up from the GAFR300's 60 cc bowl when you need more condensate capacity. The metal bowl is a build choice for tougher surroundings, but confirm compatibility with your media. This unit has no bracket (J), so plan for panel mounting or an existing bracket. The 5 um element traps finer particles than the standard 40 um, but expect more frequent element service. The L-type pressure range tops out at 0.4 MPa, so if your machine may ever need more, select the standard S type instead. No gauge is fitted, but the 1/4" gauge connection allows adding one later. The PT thread is standard. If you need lubrication 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 GAFR400C10LJNW FAQ
The GAFR400C10LJNW operates from 0.15 to 0.4 MPa (20-58 psi) with a maximum supply pressure of 1.0 MPa (145 psi) and proof pressure of 1.5 MPa (215 psi). It works in temperatures from -5 to 70 C. The drain bowl holds 100 cc and the unit weighs 880 g.
The N after the port code means no gauge is supplied, but the 1/4" gauge connection is present if you add one later. The J code means the mounting bracket is not included, so you must use a panel mount or an existing bracket to secure the 880 g unit.
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