Airtac GAFC Air Service Unit GAFC500N20LN
The AirTAC Airtac GAFC Air Service Unit GAFC500N20LN 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 3/4" ports, a 40 µm filter element and regulates 0.15 - 0.4 MPa (20 - 58 psi).
- TypeF.R.L. combination
- Port size3/4"
- Pressure range0.15 - 0.4 MPa (20 - 58 psi)
- Filtering grade40 µm
- Bowl materialNylon
- Drainsemi-auto + manual
- Pressure gaugeNot fitted
- Weight1910 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 GAFC500N20LN
This GAFC500 is a two-piece F.R.L. combination: the filter and regulator share one body, and the lubricator is mounted on the same T-bracket. Air enters the 3/4in port, gets filtered and set to pressure in the first unit, then the lubricator adds a controlled oil mist downstream. The nylon bowl holds 108 cc of condensate, the oil bowl 225 cc, and the whole assembly weighs 1910 g.
The lower-pressure version regulates from 0.15 to 0.4 MPa (20-58 psi), with a 40 um element as standard. No gauge is supplied, so the set pressure cannot be read without adding one to the 1/4in gauge connection. The catalogue flow curve is plotted to 7000 L/min at 0.7 MPa inlet, which serves as a sizing envelope rather than a rated capacity.
Airtac GAFC Air Service Unit GAFC500N20LN Technical Specifications
| Model | Airtac GAFC Air Service Unit GAFC500N20LN |
|---|---|
| Series | GAFC500 F.R.L. combination |
| Port size | 3/4" (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 | 108 cc |
| Capacity of oil bowl | 225 cc |
| Recommended lubricant | ISO VG 32 or equivalent |
| Weight | 1910 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 GAFC500 is 1/4" if you add one.
Model Code: Airtac GAFC Air Service Unit GAFC500N20LN
| GAFC500 | GA500 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). |
| 20 | Port size 3/4". This body offers 20 = 3/4". |
| (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: GAFR500-20 filter & regulator, GAL500-20 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 | GAFC500 · 3/4" · curve to 7000 L/min |
|---|---|
| One size down | GAFC400 |
| One size up | GAFC600 (curve to 12000 L/min) |
| Build order | Filter & regulator → bracket → lubricator |
Where the Airtac GAFC Air Service Unit GAFC500N20LN Is Used
Machine Tool Lubrication
Feed a CNC lathe's way-lubrication system with filtered air set to 0.3 MPa, where the lower-pressure range matches the tool's requirements and the oil mist keeps slides moving.
Packaging Line Air Prep
Supply a carton-sealing station's pneumatic cylinders with regulated air at 0.35 MPa, while the lubricator maintains consistent valve performance on a high-cycle line.
Assembly Station Control
Power a multi-spindle nutrunner's air motor with clean, lubricated air at 0.4 MPa, where the 3/4in port handles the flow demand without pressure drop.
Is the Airtac GAFC Air Service Unit GAFC500N20LN the Right Air-Prep Unit?
Choose the GAFC500 body for a 3/4in line that needs a 1910 g unit with a 108 cc drain bowl and 225 cc oil bowl. The nylon bowl is a build choice, but the common specification of 1.0 MPa max and -5 to 70 C applies regardless, so confirm it suits your environment. This model has both semi-auto and manual drains, so condensate dumps on pressure drops or on demand. The L type tops out at 0.4 MPa, so if your machine may ever need more than that, step up to the standard S type. No gauge is fitted, but the 1/4in connection allows one to be added later. The 40 um element handles general workshop air, and the PT thread suits standard piping. If the line must stay oil-free, skip the lubricator and order a plain GAFR500-20 filter-regulator instead. Spare parts are the GAFR500-20 and GAL500-20, both orderable separately. The 1.0 MPa max supply leaves about 0.6 MPa above the 0.4 MPa top of the range, so plan the inlet pressure carefully if you need to run near the limit.
Quick checklist
- ✓ Body size for your peak flow (3/4" 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 108 cc bowl fills.
- check Keep the unit above freezing (-5 to +70 °C, unfreeze).
- check Support the 1910 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 GAFR500-20 filter-regulator on that branch instead of the full combination.
Airtac GAFC Air Service Unit GAFC500N20LN FAQ
The GAFC500N20LN 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 has a 108 cc drain bowl and a 225 cc oil bowl, weighs 1910 g, and uses ISO VG 32 lubricant. The temperature range is -5 to 70 C, and the unit must not freeze.
The N in the code after the port means no gauge is supplied. The gauge connection on the GAFC500 is 1/4in, so you can add a compatible gauge if you need to read the set pressure. The unit still regulates to the 0.15-0.4 MPa range without one.
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