Airtac GAFC Air Service Unit GAFC500C20ASN
The AirTAC Airtac GAFC Air Service Unit GAFC500C20ASN 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 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 GAFC500C20ASN
This GAFC500C20ASN is a two-piece F.R.L. combination: a filter-regulator body handles filtration and pressure setting, then a separate lubricator adds a controlled oil mist downstream. With a 3/4" port and 1910 g mass, it suits machine headers or multi-station lines where several actuators draw from one prepared air supply.
The metal bowl (C code) holds 108 cc of condensate, while the oil bowl holds 225 cc. It operates over 0.15-0.9 MPa (20-130 psi) with a 40 um element. The automatic drain clears water without operator intervention, and the gauge connection is 1/4" if you add a pressure indicator later.
Airtac GAFC Air Service Unit GAFC500C20ASN Technical Specifications
| Model | Airtac GAFC Air Service Unit GAFC500C20ASN |
|---|---|
| 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. 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 GAFC500C20ASN
| 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). |
| N | No pressure gauge; 1/4" gauge connection. |
| (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 GAFC500C20ASN Is Used
Machine tool coolant systems
Feed a 3/4" header supplying solenoid valves on a CNC lathe or milling machine, where the 7000 L/min envelope covers multiple cylinders cycling during a cutting cycle.
Multi-station assembly conveyors
Prepare air for a palletized conveyor line with eight or more pneumatic stops and clamps, where the 225 cc oil bowl keeps lubricators topped up across a full shift.
Plastic injection molding support
Supply filtered, regulated air to core-pull cylinders and ejector circuits on a 150-ton press, where the automatic drain prevents water carryover during humid summer operation.
Is the Airtac GAFC Air Service Unit GAFC500C20ASN the Right Air-Prep Unit?
Choose this GAFC500 if your line needs the 3/4" port and the 7000 L/min flow envelope (plotted at 0.7 MPa inlet). The metal bowl is specified by the C code; the shared specification of 1.0 MPa max and -5 to 70 C applies, so confirm the material suits your environment. The automatic drain (A) removes condensate continuously, while the N after the port means no gauge is fitted - the 1/4" connection is ready for one. The standard S type regulates to 0.9 MPa, and the 40 um element handles general shop air. Spares are orderable as GAFR500-20 and GAL500-20. The 1.0 MPa max supply leaves about 0.1 MPa above the 0.9 MPa top of the 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 GAFC500C20ASN FAQ
The working pressure range is 0.15-0.9 MPa (20-130 psi). Maximum pressure is 1.0 MPa (145 psi) and proof pressure is 1.5 MPa (215 psi). Operating temperature is -5 to 70 C. The condensate bowl holds 108 cc and the oil bowl holds 225 cc. Recommended lubricant is ISO VG 32. The complete unit weighs 1910 g.
The N after the port code specifies no gauge is supplied. The GAFC500 body has a 1/4" gauge connection, so you can add a pressure gauge later if operators need to read the set pressure. The automatic drain handles condensate removal without manual attention.
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