Airtac GAFC Air Service Unit GAFC500N20S
The AirTAC Airtac GAFC Air Service Unit GAFC500N20S 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 GAFC500N20S
This AirTAC GAFC500N20S is a two-piece F.R.L. combination: a filter-regulator body paired with a lubricator on a shared T-bracket. The filter and regulator share one housing, so the set has one less inter-unit joint than a three-piece filter-regulator-lubricator train of the same 3/4in port size.
Air enters the first body where a 40 um element removes solids and moisture, and the regulator sets pressure anywhere in the 0.15-0.9 MPa (20-130 psi) band. The lubricator then adds a metered ISO VG 32 oil mist downstream, so oil never travels back through the regulator seat. The nylon bowls hold 108 cc of condensate and 225 cc of oil, and the complete unit weighs 1910 g, which calls for a proper panel or frame mount rather than support from the tubing.
Airtac GAFC Air Service Unit GAFC500N20S Technical Specifications
| Model | Airtac GAFC Air Service Unit GAFC500N20S |
|---|---|
| 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 GAFC500N20S
| 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. |
| (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 GAFC500N20S Is Used
Machine tool coolant systems
Feed a 3/4in header on a CNC lathe or machining center, where the filter-regulator keeps coolant actuation pressure stable and the lubricator oils the slide ways and clamping cylinders.
Multi-station assembly lines
Supply a bank of pneumatic actuators on an automotive or appliance assembly conveyor, using the 108 cc condensate bowl to reduce maintenance stops on a line that runs multiple shifts.
Packaging film tensioning
Regulate air for pneumatic brakes and dancers on a film winder, where the 40 um element protects sensitive tension-control valves and the lubricator maintains consistent clutch operation.
Is the Airtac GAFC Air Service Unit GAFC500N20S the Right Air-Prep Unit?
The GAFC500 body is the 3/4in size class, with the catalogue flow curve plotted to 7000 L/min at 0.7 MPa inlet for relative sizing. It sits between the GAFC400 (1/2in, 6000 L/min envelope) and the GAFC600 (1in, 12000 L/min envelope), so choose it when a single 3/4in line feeds a machine header or a multi-station circuit. The N specifies a nylon bowl; the shared specification of 1.0 MPa max and -5 to 70 C applies to all bowl materials, so confirm nylon suits your surroundings before ordering. Both a semi-auto drain (dumps on pressure drop) and a manual drain are fitted. The circular gauge is supplied and reads in MPa and psi for the PT thread. The element is the standard 40 um grade, and the two units are separately orderable as GAFR500-20 and GAL500-20. With a 1.0 MPa max supply, there is only about 0.1 MPa of headroom above the 0.9 MPa top of the regulated range, so plan the supply pressure accordingly 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 GAFC500N20S FAQ
The GAFC500N20S operates from 0.15 to 0.9 MPa (20-130 psi), with a maximum supply pressure of 1.0 MPa (145 psi) and a proof pressure of 1.5 MPa (215 psi). The temperature range is -5 to 70 C, and the recommended lubricant is ISO VG 32. It has a 108 cc condensate bowl and a 225 cc oil bowl, and the complete two-piece unit weighs 1910 g.
The N before the port code specifies a nylon bowl for both the filter-regulator and the lubricator. The catalogue lists the same 1.0 MPa maximum pressure and -5 to 70 C temperature range for nylon, PC, and metal bowls, so the choice is about the build for your environment. Confirm that nylon is compatible with any solvents or chemicals in your area before purchasing.
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