Airtac GAFR Adjustable Filter Regulator GAFR400C10ALJK
The AirTAC Airtac GAFR Adjustable Filter Regulator GAFR400C10ALJK 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 materialMetal
- Drainautomatic
- Pressure gaugeCircular, MPa / psi
- Weight880 g
About the Airtac GAFR Adjustable Filter Regulator GAFR400C10ALJK
The GAFR400C10ALJK is a filter and regulator combined into one metal-bodied unit. It spins incoming air to separate liquid water and trap solid particles, then delivers a steady outlet pressure through a balanced, self-locking regulator. This model uses a lower-pressure range of 0.15-0.4 MPa (20-58 psi) and a 40 um element.
With a 3/8in port and an 880 g mass, this unit is built for a machine header or a multi-station line. The metal bowl and automatic drain suit installations where condensate must be expelled without manual attention. A circular gauge with MPa/psi scale is fitted, and a reverse-flow valve is attached as an ordering option.
Airtac GAFR Adjustable Filter Regulator GAFR400C10ALJK Technical Specifications
| Model | Airtac GAFR Adjustable Filter Regulator GAFR400C10ALJK |
|---|---|
| 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 | Metal |
| 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. 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 GAFR400C10ALJK
| 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". |
| 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. |
| (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 GAFR400C10ALJK Is Used
Precision valve control
Feed a bank of precision pneumatic valves that require a stable, lower supply pressure. The balanced regulator holds the setpoint as line pressure varies, and the 40 um element protects valve internals from particle wear.
Machine header supply
Mount this unit on a machine header feeding several actuators. The 100 cc metal bowl collects condensate from a busy line, and the automatic drain clears it without stopping production.
Instrument air panel
Use it in a control panel where space is tight and a separate filter plus regulator would not fit. The single-body design reduces joints and rail width, while the lower pressure range suits sensitive instrumentation.
Is the Airtac GAFR Adjustable Filter Regulator GAFR400C10ALJK the Right Air-Prep Unit?
Choose the GAFR400 body when your line needs a 3/8in port and a 100 cc condensate bowl. The metal bowl (C) is a build choice; the automatic drain (A) handles wet or unattended lines. The lower-pressure type (L) tops out at 0.4 MPa, so confirm your application never needs more. This model omits the bracket (J) for panel-mount use, keeps the gauge, and uses a 40 um element. The PT thread sets the gauge scale to MPa/psi, and the reverse-flow valve (K) is fitted. 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 GAFR400C10ALJK FAQ
The working pressure range is 0.15-0.4 MPa (20-58 psi). Maximum pressure is 1.0 MPa (145 psi) and proof pressure is 1.5 MPa (215 psi). Temperature range is -5 to 70 C. The drain bowl holds 100 cc and the unit weighs 880 g. It has a 3/8in port, a 40 um element, and a fitted gauge with MPa/psi scale.
The K code indicates a reverse-flow (reflux) valve is attached to this unit. It is an ordering difference from the standard GAFR400. The catalogue does not detail its function, so confirm the application requirement before purchasing. This model also has an automatic drain and a metal bowl.
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