Airtac GAFC Air Service Unit GAFC400N15LN
The AirTAC Airtac GAFC Air Service Unit GAFC400N15LN 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 40 µm filter element and regulates 0.15 - 0.4 MPa (20 - 58 psi).
- TypeF.R.L. combination
- Port size1/2"
- Pressure range0.15 - 0.4 MPa (20 - 58 psi)
- Filtering grade40 µm
- Bowl materialNylon
- Drainsemi-auto + manual
- Pressure gaugeNot fitted
- Weight1810 g
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac GAFC Air Service Unit GAFC400N15LN
This GAFC400N15LN is a two-piece F.R.L. combination: a filter-regulator body followed by a lubricator, mounted on a shared T-bracket with quick clamps. 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. The 1/2in port and 1810 g mass place it in the mid-size class, demanding a proper panel or frame mount rather than support from the tubing.
The lower-pressure type regulates from 0.15 to 0.4 MPa (20-58 psi), with a 40 um element filtering the supply. The nylon bowl is specified by the N before the port code, and the shared specification of 1.0 MPa max and -5 to 70 C applies unchanged; confirm nylon suits your environment. No gauge is supplied, so the set pressure cannot be read without adding one to the 1/4in gauge connection.
Airtac GAFC Air Service Unit GAFC400N15LN Technical Specifications
| Model | Airtac GAFC Air Service Unit GAFC400N15LN |
|---|---|
| Series | GAFC400 F.R.L. combination |
| Port size | 1/2" (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 | 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. No gauge is supplied with this model — the gauge connection on a GAFC400 is 1/4" if you add one.
Model Code: Airtac GAFC Air Service Unit GAFC400N15LN
| 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). |
| 15 | Port size 1/2". 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). |
| N | No pressure gauge; 1/4" gauge connection. |
| (blank) | Filtering grade 40 µm. |
| (blank) | PT thread; gauge scale MPa / psi. |
| (blank) | No reverse-flow valve. |
Constituent units, orderable separately as spares: GAFR400-15 filter & regulator, GAL400-15 lubricator — both share this body and port. A GAFC has two units, not three: the filter and the regulator are one body.
Size Class & Flow Envelope
- GAFC2001/8"-1/4" · 1750 L/min
- GAFC3001/4"-1/2" · 3500 L/min
- GAFC4003/8"-1/2" · 6000 L/min
- GAFC5003/4" · 7000 L/min
- GAFC6003/4"-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 | GAFC400 · 1/2" · curve to 6000 L/min |
|---|---|
| One size down | GAFC300 |
| One size up | GAFC500 (curve to 7000 L/min) |
| Build order | Filter & regulator → bracket → lubricator |
Where the Airtac GAFC Air Service Unit GAFC400N15LN Is Used
Precision pressure setting
Set a delicate clamping circuit to 0.3 MPa (43 psi) for a fixture holding thin-walled parts, relying on the lower-pressure regulator's fine adjustment range.
Machine tool lubrication
Feed a single 1/2in line to a small machining center's way lubrication system, where the 185 cc oil bowl supports a full shift of misted oil delivery.
Low-pressure test rig
Supply a benchtop pneumatic test rig that cycles valves at 0.2-0.35 MPa (29-51 psi), using the 100 cc condensate bowl to catch moisture from a wet shop line.
Is the Airtac GAFC Air Service Unit GAFC400N15LN the Right Air-Prep Unit?
Choose the GAFC400 body when a 1/2in port and 100 cc condensate bowl with a 185 cc oil bowl match your service interval; the catalogue flow curve is plotted to 6000 L/min at 0.7 MPa inlet, useful for relative sizing against the GAFC300's 3500 L/min envelope. The L type tops out at 0.4 MPa, so if the machine may ever need more pressure, step to a standard S type instead. The nylon bowl is a material choice, not a performance upgrade, and the semi-auto drain dumps on pressure drop while the manual drain works on demand. A 5 um element (W) is available for finer filtration, and the K option adds a reverse-flow valve. The two units are orderable separately as GAFR400-15 and GAL400-15. For oil-free lines, omit the lubricator and select a plain GAFR filter-regulator. With a 1.0 MPa max supply, you have about 0.6 MPa of headroom above the 0.4 MPa top of the range, so plan the inlet pressure carefully.
Quick checklist
- ✓ Body size for your peak flow (1/2" 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
- ✓ Thread & gauge scale (PT / G / NPT)
Installation & Maintenance Notes
- check Install with the airflow arrow: filter-regulator first, lubricator last.
- check Keep inlet pressure at or below 1.0 MPa (145 psi).
- check Fill the oil bowl with ISO VG 32 or equivalent only.
- check Drain condensate before the 100 cc bowl fills.
- check Keep the unit above freezing (-5 to +70 °C, unfreeze).
- check Support the 1810 g unit on its bracket, not on the tubing.
The lubricator adds an oil mist downstream of the regulator. If any part of the line must stay oil-free, use a plain GAFR400-15 filter-regulator on that branch instead of the full combination.
Airtac GAFC Air Service Unit GAFC400N15LN FAQ
The GAFC400N15LN 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). It works in -5 to 70 C temperatures and uses ISO VG 32 oil. The drain bowl holds 100 cc and the oil bowl 185 cc, with a total weight of 1810 g.
The N after the port code means no gauge is supplied. The GAFC400 body has a 1/4in gauge connection, so you can add a circular gauge later to read the set pressure. Until then, the outlet pressure cannot be visually verified on the unit.
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