Airtac GAFC Air Service Unit GAFC500C20AS
The AirTAC Airtac GAFC Air Service Unit GAFC500C20AS 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 materialMetal
- Drainautomatic
- 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 GAFC500C20AS
The GAFC500C20AS is a two-piece F.R.L. combination: a filter-regulator body paired with a lubricator on a shared T-bracket. With a 3/4in port and a 1910 g mass, this size class suits a machine header or a multi-station line where several actuators draw from one prepared air supply.
Air enters the first body where the 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 oil mist downstream, so oil never travels back through the regulator seat. The metal bowl is specified by the C code, and the automatic drain clears condensate without an operator attending the unit.
Airtac GAFC Air Service Unit GAFC500C20AS Technical Specifications
| Model | Airtac GAFC Air Service Unit GAFC500C20AS |
|---|---|
| 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 | Metal |
| Drain type | Automatic 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 GAFC500C20AS
| GAFC500 | GA500 series F.R.L. unit — sets ports, bowl capacity and weight. |
|---|---|
| C | Bowl material: Metal. Available on this body: PC (blank), Metal (C), Nylon (N). |
| 20 | Port size 3/4". This body offers 20 = 3/4". |
| A | Drain: Automatic 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 GAFC500C20AS Is Used
Machine Tool Header
Feed a 3/4in header on a CNC machining center that runs several pneumatic clamps and a tool-changer cylinder, with the automatic drain handling condensate from a wet compressor line.
Multi-Station Assembly Line
Supply a pallet-transfer conveyor where multiple workstations each have a valve manifold, using the 108 cc bowl to extend time between condensate checks across a full shift.
Packaging Machine Air Prep
Prepare air for a case-packer that cycles film-seal jaws and a pusher cylinder, relying on the 0.15-0.9 MPa range to set the exact force for each station.
Is the Airtac GAFC Air Service Unit GAFC500C20AS the Right Air-Prep Unit?
Choose the GAFC500 when a 3/4in port and 108 cc condensate bowl are the right service scale; the GAFC400 above it offers a 1/2in port with a 100 cc bowl, while the GAFC600 below it steps up to a 1in port and a 205 cc bowl. The metal bowl is a build choice for the surroundings - confirm it suits your environment, as the catalogue lists no material-specific ratings. The automatic drain (A) handles wet lines, the standard type (S) covers 0.15-0.9 MPa (20-130 psi), and the fitted circular gauge reads in MPa and psi on the default PT thread. A 5 um element (W) is available for finer filtration, and the K option adds a reverse-flow valve. The two units are orderable separately as 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 the supply pressure with that headroom in mind.
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 GAFC500C20AS FAQ
The GAFC500C20AS operates at 0.15-0.9 MPa (20-130 psi) with a max pressure of 1.0 MPa (145 psi) and a proof pressure of 1.5 MPa (215 psi). It works in -5 to 70 C temperatures, uses ISO VG 32 lubricant, has a 108 cc drain bowl and a 225 cc oil bowl, and weighs 1910 g. The 40 um element is standard, and the automatic drain is fitted.
The C in GAFC500C20AS specifies a metal bowl. The catalogue does not list different temperature or impact ratings for bowl materials - the common specification is the same for PC, nylon, and metal. The metal bowl is a build choice for the surroundings; confirm it suits your environment before ordering.
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