Airtac GAFC Air Service Unit GAFC500N20LNW
The AirTAC Airtac GAFC Air Service Unit GAFC500N20LNW 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 5 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 grade5 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 GAFC500N20LNW
This AirTAC GAFC500N20LNW is a two-piece F.R.L. combination: a filter-regulator body paired with a lubricator on a T-bracket. The 3/4in port and 1910 g mass place it in the mid-large size class, suited for a machine header feeding several actuators. It filters to 5 um, regulates in the lower 0.15-0.4 MPa (20-58 psi) band, and adds a metered oil mist last, downstream of the regulator seat.
The nylon bowl holds 108 cc of condensate and the oil bowl 225 cc, so service intervals are long for a 3/4in line. No gauge is supplied; the 1/4in gauge connection allows a later addition. The semi-auto drain dumps on each pressure drop while the manual drain works on demand. Rated for -5 to 70 C, it must not freeze, ruling out unheated winter outdoor lines.
Airtac GAFC Air Service Unit GAFC500N20LNW Technical Specifications
| Model | Airtac GAFC Air Service Unit GAFC500N20LNW |
|---|---|
| Series | GAFC500 F.R.L. combination |
| Port size | 3/4" (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 | 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 GAFC500N20LNW
| 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. |
| W | Filtering grade 5 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 GAFC500N20LNW Is Used
Machine tool coolant systems
Feed a 3/4in header on a CNC lathe or mill where coolant valves and door cylinders need regulated air up to 0.4 MPa, with 5 um filtration protecting fine solenoids.
Assembly line torque stations
Supply a multi-spindle nutrunner station where lower pressure prevents over-torquing, and the 225 cc oil bowl keeps tool lubrication steady across a shift.
Packaging conveyor diverters
Power pneumatic diverters and stops on a case conveyor, where the 108 cc drain bowl handles condensate from a wet compressor line with semi-auto dumping.
Is the Airtac GAFC Air Service Unit GAFC500N20LNW the Right Air-Prep Unit?
Choose this GAFC500N20LNW when your line needs 3/4in ports and a regulated ceiling of 0.4 MPa. The L type tops out there, so if the machine may ever need more than 0.4 MPa, step to the standard S type instead. The 5 um element traps finer particles for precision valves but needs more frequent service than the 40 um standard. The nylon bowl is a build choice; the shared 1.0 MPa max and -5 to 70 C spec does not change with material, so confirm it suits your surroundings. The PT thread carries a gauge scale in MPa/psi if a gauge is added later. Spares are orderable as GAFR500-20 and GAL500-20.
Max supply of 1.0 MPa leaves about 0.6 MPa above the 0.4 MPa top of this unit's regulated range, so plan your inlet pressure accordingly.
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 GAFC500N20LNW FAQ
This F.R.L. combination 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). The temperature range is -5 to 70 C. It has a 108 cc drain bowl and a 225 cc oil bowl, weighs 1910 g, and uses ISO VG 32 lubricant. The 3/4in port and 5 um element suit it for mid-size machine headers.
The N in the code after the port means no gauge is supplied. The GAFC500 body has a 1/4in gauge connection, so you can add a compatible gauge later. Without one, the set pressure cannot be read directly, so plan to fit a gauge if operators need to verify the 0.15-0.4 MPa setting.
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