Airtac GAFR Adjustable Filter Regulator GAFR40010ALJNK
The AirTAC Airtac GAFR Adjustable Filter Regulator GAFR40010ALJNK 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
- Drainautomatic
- Pressure gaugeNot fitted
- Weight880 g
About the Airtac GAFR Adjustable Filter Regulator GAFR40010ALJNK
The GAFR40010ALJNK is a filter and regulator combined in a single body, so the incoming air is spun to separate liquid water and solid particles before a balanced regulator sets a steady outlet pressure. This 3/8in unit operates in the lower-pressure band of 0.15-0.4 MPa (20-58 psi) and uses a 40 um element.
This model ships with an automatic drain, a PC bowl, and no mounting bracket. The reverse-flow (reflux) valve is fitted as an ordering difference. Weighing 880 g, this GAFR400 body needs proper panel support rather than being suspended from the tubing.
Airtac GAFR Adjustable Filter Regulator GAFR40010ALJNK Technical Specifications
| Model | Airtac GAFR Adjustable Filter Regulator GAFR40010ALJNK |
|---|---|
| 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 | Automatic 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 GAFR40010ALJNK
| 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". |
| A | Drain: Automatic 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. |
| (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 GAFR40010ALJNK Is Used
Precision valve control
Feed a bank of precision pneumatic valves that require a stable, lower regulated pressure. The balanced regulator holds the setpoint as supply varies, and the 40 um element protects fine internal passages.
Unattended machine station
Mount this on a machine station where the automatic drain removes condensate without an operator. The 100 cc bowl handles a full shift of moisture before needing attention, and the 3/8in port suits typical actuator feeds.
Panel-mounted test rig
Use the no-bracket version on a test rig panel where you already have mounting holes. The lower 0.15-0.4 MPa range is ideal for sensitive instrumentation that must not see higher pressures.
Is the Airtac GAFR Adjustable Filter Regulator GAFR40010ALJNK the Right Air-Prep Unit?
Choose the GAFR400 body for a 3/8in port with a 100 cc condensate bowl and a flow curve plotted to 7000 L/min at 0.7 MPa inlet. The PC bowl suits general dry indoor use; the automatic drain handles unattended or wet lines without manual intervention. The L-type regulator tops out at 0.4 MPa, so confirm your machine never needs more than that. This J version omits the bracket for panel mounting, and the N code means no gauge is supplied - the 1/4in gauge connection is ready for one if you add it later. The 40 um element covers standard filtration, while the K reflux valve is present as a specified option. 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 of headroom above the 0.4 MPa regulated ceiling.
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 GAFR40010ALJNK FAQ
This filter & regulator has a 3/8in port, a 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 and must not freeze. The drain bowl holds 100 cc and the unit weighs 880 g. It uses a 40 um element and has an automatic drain.
The N code after the port means no gauge is supplied, so you cannot read the set pressure without adding one to the 1/4in gauge connection. The J code means the mounting bracket is omitted, which suits panel mounting or existing brackets. Both are intentional ordering choices to reduce cost when you already have these items.
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