
The AirTAC Airtac GAFC Air Service Unit GAFC400N10LWK 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 5 µm filter element and regulates 0.15 - 0.4 MPa (20 - 58 psi).
This AirTAC GAFC400N10LWK is an F.R.L. combination where the filter and regulator share one body, paired with a lubricator on a T-bracket. With a 3/8in port and a lower-pressure range of 0.15-0.4 MPa (20-58 psi), it suits applications needing precise low-pressure control. The 5 um element traps fine particles, and the nylon bowl is fitted as standard.
The 100 cc condensate bowl and 185 cc oil bowl mean less frequent attention compared to smaller units. The circular gauge reads in MPa/psi, and the semi-auto drain dumps on pressure drop while the manual drain works on demand. A reverse-flow (reflux) valve is fitted, and the whole 1810 g assembly needs a proper panel mount, not tubing support.
| Model | Airtac GAFC Air Service Unit GAFC400N10LWK |
|---|---|
| Series | GAFC400 F.R.L. combination |
| 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 | Nylon |
| 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 |
| 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". |
| (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). |
| (blank) | Circular pressure gauge fitted. |
| W | Filtering grade 5 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 |
Use this lower-pressure F.R.L. on a precision grinding spindle or a pneumatic tensioning system that needs stable 0.15-0.4 MPa output. The 5 um element protects fine metering valves from particle wear.
Feed a multi-station assembly fixture where tools need consistent oil mist. The 185 cc oil bowl keeps lubricant topped up across long shifts, and the 100 cc drain bowl handles condensate from wet shop air.
Supply a laboratory pneumatic actuator or a small test rig that requires filtered, regulated, oil-misted air at low pressure. The 5 um element and lower-pressure range suit sensitive lab equipment.
Choose this GAFC400N10LWK when your line needs lower pressure regulation up to 0.4 MPa and fine 5 um filtration. The nylon bowl is a material choice, but confirm it suits your environment since the catalogue gives no chemical or impact data. The semi-auto and manual drains give you both automatic dumping on pressure loss and on-demand control. The PT thread comes with an MPa/psi gauge scale, and the reverse-flow valve is fitted per the K code. For spares, order the GAFR400-10 filter-regulator and GAL400-10 lubricator separately. If your line must stay oil-free, omit the lubricator and choose a plain GAFR filter-regulator instead. The 1.0 MPa max supply leaves about 0.6 MPa above the 0.4 MPa top of the range, so you have ample inlet pressure headroom for this lower-pressure unit.
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 lower-pressure unit operates at 0.15-0.4 MPa (20-58 psi) with a max pressure of 1.0 MPa (145 psi) and proof pressure of 1.5 MPa (215 psi). It works in -5 to 70 C temperatures and needs ISO VG 32 lubricant. The drain bowl holds 100 cc and the oil bowl 185 cc, with a total weight of 1810 g.
The L type tops out at 0.4 MPa instead of 0.9 MPa, giving up about 44% of the standard ceiling. If your machine may ever need more than 0.4 MPa, this is the wrong part. The 1.0 MPa max supply still provides 0.6 MPa of headroom above the 0.4 MPa regulated top.
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