Airtac GAFC Air Service Unit GAFC500N20L
The AirTAC Airtac GAFC Air Service Unit GAFC500N20L 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 gaugeCircular, MPa / psi
- 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 GAFC500N20L
This AirTAC GAFC500N20L 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 to feeding a machine header or a multi-station line. It regulates from 0.15 to 0.4 MPa (20-58 psi), with a 40 um element and a fitted circular gauge reading MPa/psi.
The nylon bowl holds 108 cc of condensate, while the separate oil bowl holds 225 cc, so service intervals are longer than on smaller bodies. Air is filtered and set to pressure first, then a metered oil mist is added downstream, so oil never passes back through the regulator seat. The semi-auto drain dumps on each pressure drop, with a manual drain for on-demand use.
Airtac GAFC Air Service Unit GAFC500N20L Technical Specifications
| Model | Airtac GAFC Air Service Unit GAFC500N20L |
|---|---|
| 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. The fitted circular gauge reads in MPa / psi, set by the PT thread code.
Model Code: Airtac GAFC Air Service Unit GAFC500N20L
| 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). |
| (blank) | Circular pressure gauge fitted. |
| (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 GAFC500N20L Is Used
Machine Tool Header
Feed a 3/4in header supplying coolant valves and clamping cylinders on a CNC lathe, where the lower 0.4 MPa ceiling protects sensitive workholding circuits.
Assembly Line Lubrication
Provide filtered, regulated air with a controlled oil mist to pneumatic actuators on a multi-station assembly conveyor, keeping moving parts lubricated.
Packaging Equipment
Run a carton-forming machine's film-seal jaws and pusher cylinders at a stable 0.3 MPa setpoint, with the 225 cc oil bowl reducing refill frequency.
Is the Airtac GAFC Air Service Unit GAFC500N20L the Right Air-Prep Unit?
Choose the GAFC500N20L when your line needs 3/4in ports and a lower regulated ceiling of 0.4 MPa. The nylon bowl is a build choice, not a performance upgrade; the shared specification of 1.0 MPa max and -5 to 70 C applies, so confirm the material suits your surroundings. The semi-auto plus manual drain pair suits attended machines, while the A code would add an automatic drain. The PT thread carries a gauge scale in MPa/psi, and the 40 um element is the standard grade; the W code would fit a 5 um element for finer filtration. Spares are orderable as the GAFR500-20 filter-regulator and the GAL500-20 lubricator. 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 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 GAFC500N20L FAQ
The GAFC500N20L operates from 0.15 to 0.4 MPa (20-58 psi), with a maximum pressure of 1.0 MPa (145 psi) and a proof pressure of 1.5 MPa (215 psi). It is rated for -5 to 70 C and requires ISO VG 32 lubricant. The drain bowl holds 108 cc, the oil bowl 225 cc, and the unit weighs 1910 g.
The L type tops out at 0.4 MPa, which is about 44% of the standard type's 0.9 MPa ceiling. If your machine may ever need more than 0.4 MPa, the L type is the wrong part; choose the S type instead. The GAFC500N20L also includes a nylon bowl and a semi-auto plus manual drain.
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Standard models are processed and dispatched in 3-5 business days.
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