Airtac GAFR Adjustable Filter Regulator GAFR40010LJNWK
The AirTAC Airtac GAFR Adjustable Filter Regulator GAFR40010LJNWK 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 materialPC
- Drainsemi-auto + manual
- Pressure gaugeNot fitted
- Weight880 g
About the Airtac GAFR Adjustable Filter Regulator GAFR40010LJNWK
The GAFR40010LJNWK is a filter and pressure regulator combined into a single body, saving rail space and reducing potential leak points compared to separate units. It handles a 3/8in port and delivers a lower pressure range of 0.15-0.4 MPa (20-58 psi), with a 5 um filter element for finer particle removal.
This 880 g unit features a 100 cc condensate bowl and comes without a gauge or mounting bracket. A reverse-flow (reflux) valve is fitted as an ordering option. The diversion structure spins incoming air to separate liquid water and solid particles, protecting downstream components.
Airtac GAFR Adjustable Filter Regulator GAFR40010LJNWK Technical Specifications
| Model | Airtac GAFR Adjustable Filter Regulator GAFR40010LJNWK |
|---|---|
| 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 | 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. 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 GAFR40010LJNWK
| 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. |
| N | No pressure gauge; 1/4" gauge connection. |
| 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 GAFR40010LJNWK Is Used
Precision Pressure Control
Use the lower 0.15-0.4 MPa range for delicate pneumatic logic or sensitive actuators that must not see higher pressures. The 5 um element protects fine orifices in precision valves.
Lab Air Supply
Feed a laboratory bench or test fixture with filtered, regulated air. The compact 880 g body with a 3/8in port fits easily into a test setup, and the 5 um element helps keep instrumentation clean.
Machine Sub-Circuit
Protect a single machine sub-circuit that needs a lower, stable pressure. The 100 cc bowl handles typical condensate between checks, and the semi-auto drain allows manual override when needed.
Is the Airtac GAFR Adjustable Filter Regulator GAFR40010LJNWK the Right Air-Prep Unit?
Choose the GAFR400 body for medium-flow applications, with a 3/8in port and a flow curve plotted to 7000 L/min at 0.7 MPa inlet. The lower-pressure (L) type is ideal for sensitive circuits, but verify your system never needs more than 0.4 MPa. The 5 um element traps finer particles than the standard 40 um, though it will require more frequent service. This model omits the bracket (J) and gauge (N); the 1/4in gauge connection is available if you add one later. The semi-auto+manual drain requires periodic checking, and the PC bowl is the standard build. The fitted reflux valve (K) is an ordering difference only. If oil is needed downstream, order the matching GAFC400-10 combination instead. With a 1.0 MPa max supply, you have 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 GAFR40010LJNWK 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 gauge connection is 1/4in.
The 'N' after the port code means no gauge is supplied; you can add one later using the 1/4in connection. The 'J' code means the mounting bracket is omitted, which is suitable for panel mounting or when using an existing bracket. This model also has a lower-pressure (L) regulator and a 5 um element.
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