
The AirTAC Airtac GAFC Air Service Unit GAFC300C15LNWK 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 1/2" ports, a 5 µm filter element and regulates 0.15 - 0.4 MPa (20 - 58 psi).
This GAFC300 F.R.L. combination pairs a filter-regulator body with a lubricator on one T-shaped bracket, so the air is cleaned, set to a lower pressure, then given a metered oil mist as the final step. The metal bowl (C) holds 60 cc of condensate while the separate oil bowl holds 98 cc, and the whole 1020 g assembly mounts with quick clamps for a compact footprint.
The lower-pressure regulator tops out at 0.4 MPa (20-58 psi), which suits gentle duties like paint spray or air tools that must not see higher pressure. A 5 um element traps fine particles for sensitive equipment, and since no gauge is fitted, the 1/8" gauge connection on the body is where one would be added if a readout is needed later.
| Model | Airtac GAFC Air Service Unit GAFC300C15LNWK |
|---|---|
| Series | GAFC300 F.R.L. combination |
| Port size | 1/2" (PT thread) |
| Filtering grade | 5 µm |
| Pressure range | 0.15 - 0.4 MPa (20 - 58 psi) |
| Type | Lower pressure |
| Bowl material | Metal |
| 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. No gauge is supplied with this model — the gauge connection on a GAFC300 is 1/8" if you add one.
| GAFC300 | GA300 series F.R.L. unit — sets ports, bowl capacity and weight. |
|---|---|
| C | Bowl material: Metal. Available on this body: PC (blank), Metal (C), Nylon (N). |
| 15 | Port size 1/2". 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). |
| N | No pressure gauge; 1/8" gauge connection. |
| W | Filtering grade 5 µm. |
| (blank) | PT thread; gauge scale MPa / psi. |
| K | Reverse-flow (reflux) valve attached. |
Constituent units, orderable separately as spares: GAFR300-15 filter & regulator, GAL300-15 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 · 1/2" · curve to 3500 L/min |
|---|---|
| One size down | GAFC200 |
| One size up | GAFC400 (curve to 6000 L/min) |
| Build order | Filter & regulator → bracket → lubricator |
Feed a paint spray gun with air regulated to a gentle 0.4 MPa ceiling, keeping the finish even without risking over-pressure on the fluid tip.
Protect a small die grinder or impact wrench by adding a controlled oil mist downstream of the regulator, extending tool life on a 1/2in line.
Run a light-duty conveyor drive at a steady lower pressure, with the 5 um element keeping fine dust from clogging the air motor.
Choose the GAFC300C15LNWK when a 1/2" port line needs filtered, regulated air at a modest pressure with oil added. The metal bowl is a build choice, and the shared specification of 1.0 MPa max and -5 to 70 C applies regardless, so confirm the material suits your environment. The semi-auto drain dumps condensate when pressure drops, while the manual drain gives on-demand control, and the 5 um element filters finer than the standard 40 um for precision valves or instruments. The reverse-flow (reflux) valve is fitted, and the gauge connection is 1/8" since no gauge ships with this unit. Spares are the GAFR300-15 filter-regulator and GAL300-15 lubricator, both orderable separately. 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 GAFR300-15 filter-regulator on that branch instead of the full combination.
The working pressure range is 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 operates from -5 to 70 C and should not freeze. The drain bowl holds 60 cc and the oil bowl 98 cc, the unit weighs 1020 g, and the recommended lubricant is ISO VG 32.
The C code specifies a metal bowl, which is a material choice for the build, though the temperature and pressure ratings stay the same as the PC or nylon options. The N after the port means no gauge is supplied, so the set pressure cannot be read without adding one to the 1/8" gauge connection.
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