
The AirTAC Airtac GAFC Air Service Unit GAFC400N10ALK is a genuine two-piece F.R.L. combination — a GA-series filter & regulator and a lubricator pre-assembled on one T-shape bracket with quick mounting clamps. It has 3/8" ports, a 40 µm filter element and regulates 0.15 - 0.4 MPa (20 - 58 psi).
This AirTAC GAFC400N10ALK is an F.R.L. combination built from two bodies on a shared T-bracket: a GAFR filter-regulator that cleans the air and sets its pressure, followed by a GAL lubricator that meters oil mist into the flow. The 3/8in port and 1810 g mass place it in the mid-size class, suited to machine headers and multi-station lines rather than single small actuators.
The lower-pressure type regulates from 0.15 to 0.4 MPa (20-58 psi), with a 40 um element handling standard shop air. The nylon bowl is fitted, and the automatic drain clears condensate without operator attention. A circular gauge with an MPa/psi scale is supplied, and the reverse-flow (reflux) valve is included as an ordering option.
| Model | Airtac GAFC Air Service Unit GAFC400N10ALK |
|---|---|
| Series | GAFC400 F.R.L. combination |
| 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 | Nylon |
| 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 |
| Capacity of oil bowl | 185 cc |
| Recommended lubricant | ISO VG 32 or equivalent |
| Weight | 1810 g |
Specifications follow the official AirTAC GAFC catalogue (pages 219-220). Air must not freeze in the unit. The fitted circular gauge reads in MPa / psi, set by the PT thread code.
| GAFC400 | GA400 series F.R.L. unit — sets ports, bowl capacity and weight. |
|---|---|
| N | Bowl material: Nylon. 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). |
| (blank) | Circular pressure gauge fitted. |
| (blank) | Filtering grade 40 µm. |
| (blank) | PT thread; gauge scale MPa / psi. |
| K | Reverse-flow (reflux) valve attached. |
Constituent units, orderable separately as spares: GAFR400-10 filter & regulator, GAL400-10 lubricator — both share this body and port. A GAFC has two units, not three: the filter and the regulator are one body.
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 | GAFC400 · 3/8" · curve to 6000 L/min |
|---|---|
| One size down | GAFC300 |
| One size up | GAFC500 (curve to 7000 L/min) |
| Build order | Filter & regulator → bracket → lubricator |
Feed a bank of precision pneumatic valves on a packaging machine, where the 0.4 MPa ceiling protects sensitive pilot stages and the automatic drain keeps the supply dry.
Lubricate the actuators on a conveyor sorting line, with the 100 cc condensate bowl and 185 cc oil bowl reducing service frequency during multi-shift operation.
Supply a machine tool's clamping circuit with filtered, regulated, oil-misted air at a stable lower pressure, protecting the regulator seat from oil carry-back.
Choose the GAFC400N10ALK when your line needs 3/8in ports and a regulated output capped at 0.4 MPa (20-58 psi). The nylon bowl is a build choice; the shared specification of 1.0 MPa max and -5 to 70 C applies regardless, so confirm the material suits your environment. The automatic drain suits unattended operation, while the 40 um element is the standard grade. The PT thread carries an MPa/psi gauge scale. Spare parts are the GAFR400-10 filter-regulator and GAL400-10 lubricator, both orderable separately. The 1.0 MPa max supply leaves about 0.6 MPa above the 0.4 MPa top of the range.
Quick checklist
The lubricator adds an oil mist downstream of the regulator. If any part of the line must stay oil-free, use a plain GAFR400-10 filter-regulator on that branch instead of the full combination.
This F.R.L. combination operates from 0.15 to 0.4 MPa (20-58 psi), with a max pressure of 1.0 MPa (145 psi) and proof pressure of 1.5 MPa (215 psi). Temperature range is -5 to 70 C. The drain bowl holds 100 cc and the oil bowl 185 cc. Recommended lubricant is ISO VG 32. The unit weighs 1810 g.
The K indicates the reverse-flow (reflux) valve is fitted. The catalogue shows it as a separate pneumatic symbol. It is an ordering difference on this model; the valve is included with the assembly.
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