Airtac GAFC Air Service Unit GAFC500N20SK
The AirTAC Airtac GAFC Air Service Unit GAFC500N20SK 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 - 0.9 MPa (20 - 130 psi).
- TypeF.R.L. combination
- Port size3/4"
- Pressure range0.15 - 0.9 MPa (20 - 130 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 GAFC500N20SK
This AirTAC GAFC500N20SK is an F.R.L. combination built as two units on one T-shape bracket: a filter-regulator body followed by a lubricator. The 3/4in port and 1910 g mass place it in the heavy mid-range class, suited to multi-station machines rather than small jigs. It handles 0.15-0.9 MPa (20-130 psi) with a 40 um element, and the nylon bowl is named for the build - confirm it suits your environment.
The filter and regulator share one body, so the train has one less inter-unit joint than a three-piece setup. Air is cleaned and set to pressure first, then the lubricator adds oil mist last, so oil never travels back through the regulator seat. The 108 cc condensate bowl and 225 cc oil bowl define the service rhythm - the larger capacity means fewer visits to drain and refill.
Airtac GAFC Air Service Unit GAFC500N20SK Technical Specifications
| Model | Airtac GAFC Air Service Unit GAFC500N20SK |
|---|---|
| Series | GAFC500 F.R.L. combination |
| Port size | 3/4" (PT thread) |
| Filtering grade | 40 µm |
| Pressure range | 0.15 - 0.9 MPa (20 - 130 psi) |
| Type | Standard |
| 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 GAFC500N20SK
| 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. |
| S | Standard type — 0.15 - 0.9 MPa (20 - 130 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. |
| K | Reverse-flow (reflux) valve attached. |
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 GAFC500N20SK Is Used
Multi-station assembly
Feed a four-station pneumatic assembly bench where each station has its own actuator. The 3/4in port and 7000 L/min envelope at 0.7 MPa inlet handle the combined demand without a separate filter and regulator per station.
CNC fixture clamping
Power a hydraulic intensifier or pneumatic clamp circuit on a CNC mill. The regulated 0.15-0.9 MPa range covers typical fixture pressures, while the 225 cc oil bowl keeps the clamp valves lubricated through long cycles.
Packaging line air prep
Supply a case packer's pneumatic cylinders and grippers. The 108 cc condensate bowl collects moisture from a long header line, and the semi-auto drain clears it each time the line cycles down, reducing manual checks.
Is the Airtac GAFC Air Service Unit GAFC500N20SK the Right Air-Prep Unit?
Choose the GAFC500 for 3/4in lines where a single unit must feed several actuators or a small header. The nylon bowl is a material choice - the catalogue gives no impact or chemical data, so confirm it fits your surroundings. The semi-auto drain dumps condensate on pressure drop, with a manual drain for on-demand use. The fitted circular gauge reads in MPa/psi, matching the PT thread. The reverse-flow (reflux) valve is present as an ordering difference. For oil-free lines, omit the lubricator and select a plain GAFR filter-regulator instead. Spares are GAFR500-20 and GAL500-20. With a 1.0 MPa max supply, you have about 0.1 MPa above the 0.9 MPa top of the regulated range, so plan inlet pressure carefully if you need the full output.
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 GAFC500N20SK FAQ
The GAFC500N20SK operates at 0.15-0.9 MPa (20-130 psi) with a max pressure of 1.0 MPa (145 psi) and proof pressure of 1.5 MPa (215 psi). Temperature range is -5 to 70 C. It has a 108 cc drain bowl and 225 cc oil bowl, weighs 1910 g, and uses ISO VG 32 oil. The 40 um element filters the air before the lubricator adds oil mist.
The K indicates a reverse-flow (reflux) valve is fitted to this unit. The catalogue shows it as a separate pneumatic symbol. It is an ordering difference - the valve is included with the assembly. The unit still functions as a filter-regulator plus lubricator, with the same 3/4in port and 0.15-0.9 MPa range.
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