
The AirTAC Airtac GAFC Air Service Unit GAFC300N10LK 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 GAFC300N10LK is a two-piece F.R.L. combination where the filter and regulator share one body, paired with a lubricator on a T-bracket. It handles a 3/8in port and regulates to a lower pressure band of 0.15-0.4 MPa (20-58 psi), with a 40 um element and a nylon bowl. The 60 cc condensate bowl and 98 cc oil bowl set the service rhythm for this 1020 g unit.
The build order matters: air is cleaned and set to pressure in the first body, then the lubricator adds a metered oil mist last, so oil never travels back through the regulator seat. A circular gauge is fitted and reads in MPa/psi for the PT thread. The reverse-flow valve is fitted as a separate pneumatic symbol, and the two units are orderable as GAFR300-10 and GAL300-10.
| Model | Airtac GAFC Air Service Unit GAFC300N10LK |
|---|---|
| Series | GAFC300 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 | 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 | 60 cc |
| Capacity of oil bowl | 98 cc |
| Recommended lubricant | ISO VG 32 or equivalent |
| Weight | 1020 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.
| GAFC300 | GA300 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 08 = 1/4", 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. |
| (blank) | Filtering grade 40 µm. |
| (blank) | PT thread; gauge scale MPa / psi. |
| K | Reverse-flow (reflux) valve attached. |
Constituent units, orderable separately as spares: GAFR300-10 filter & regulator, GAL300-10 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 | GAFC300 · 3/8" · curve to 3500 L/min |
|---|---|
| One size down | GAFC200 |
| One size up | GAFC400 (curve to 6000 L/min) |
| Build order | Filter & regulator → bracket → lubricator |
Set a delicate 0.3 MPa (43 psi) supply for a small indexing table or a light press clutch, where the lower regulation band gives finer control than a standard 0.9 MPa unit.
Feed a single 3/8in actuator on a benchtop assembly fixture, using the 60 cc drain bowl to catch condensate over a shift and the 98 cc oil bowl to keep the lubricator topped up.
Supply a leak-test station that must not exceed 0.4 MPa (58 psi), relying on the lower-pressure type to cap the output while the filter removes moisture and solids from the line.
Choose the GAFC300N10LK when your circuit needs a 3/8in port with a lower 0.15-0.4 MPa (20-58 psi) regulation band, and you want a nylon bowl with the semi-auto plus manual drain pair. The 5 um element option (W) is not fitted here, so the standard 40 um grade is in place; step up to the GAFC400 with its 100 cc drain bowl if you need a larger reservoir and a 1/2in port. The PT thread brings an MPa/psi gauge scale, and the K code adds the reverse-flow valve to the assembly. If the line must stay oil-free, omit the lubricator and select a plain GAFR filter-regulator instead.
With a 1.0 MPa max supply, you have about 0.6 MPa of headroom above the 0.4 MPa top of the regulated range, so plan the inlet pressure accordingly.
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 GAFR300-10 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, uses ISO VG 32 oil, has a 60 cc drain bowl and a 98 cc oil bowl, and weighs 1020 g. The 3/8in port and 40 um element are standard for this model.
The K indicates a reverse-flow (reflux) valve is fitted to the GAFC300N10LK. The catalogue shows it as a separate pneumatic symbol in the circuit. This is an ordering difference to note; the valve is part of the supplied assembly.
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