Airtac GAFC Air Service Unit GAFC500N20AL
The AirTAC Airtac GAFC Air Service Unit GAFC500N20AL 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
- 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 GAFC500N20AL
This AirTAC GAFC500N20AL is an F.R.L. combination built as two units on one 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 machine headers that feed several actuators. It regulates from 0.15 to 0.4 MPa (20-58 psi), with the 40 um element handling standard shop air.
The nylon bowl holds 108 cc of condensate while the separate oil bowl holds 225 cc, so service intervals are practical for a busy line. The automatic drain clears water without an operator, and the fitted circular gauge reads in MPa and psi. A 1.0 MPa (145 psi) maximum supply leaves about 0.6 MPa above the 0.4 MPa top of the regulated range, which is worth planning around if you need the full output.
Airtac GAFC Air Service Unit GAFC500N20AL Technical Specifications
| Model | Airtac GAFC Air Service Unit GAFC500N20AL |
|---|---|
| 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 | 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 GAFC500N20AL
| 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". |
| A | Drain: Automatic 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 GAFC500N20AL Is Used
Machine Tool Header
Feed a 3/4in header on a CNC lathe or milling center, supplying filtered and regulated air to the chuck cylinder and tool changer at a consistent 0.3 MPa.
Assembly Line Lubrication
On a multi-station assembly conveyor, the automatic drain handles condensate while the lubricator meters ISO VG 32 oil to pneumatic clamps and pushers downstream.
Packaging Equipment
Run a case packer or strapping machine where the lower 0.4 MPa range suits light-duty cylinders, and the 225 cc oil bowl keeps the lubricator filled through a full shift.
Is the Airtac GAFC Air Service Unit GAFC500N20AL the Right Air-Prep Unit?
Choose the GAFC500 for a 3/4in line that feeds multiple devices; the 7000 L/min plotted curve at 0.7 MPa inlet shows its sizing envelope, though you should read the curve for your actual duty. The nylon bowl is a build choice, but the shared specification of 1.0 MPa max and -5 to 70 C applies regardless, so confirm it suits your environment. The automatic drain is the right call for unattended operation, and the PT thread brings an MPa/psi gauge scale that operators will read directly.
The L type tops out at 0.4 MPa, so if your machine may ever need more pressure, this is the wrong part. Spares are the GAFR500-20 filter-regulator and GAL500-20 lubricator, both orderable separately. The 1.0 MPa max supply sits about 0.6 MPa above the 0.4 MPa ceiling, giving you that margin to work with before the regulator loses control.
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 GAFC500N20AL FAQ
It operates from 0.15 to 0.4 MPa (20-58 psi), with a maximum pressure of 1.0 MPa (145 psi) and proof pressure of 1.5 MPa (215 psi). The temperature range is -5 to 70 C, and it uses ISO VG 32 lubricant. The drain bowl holds 108 cc, the oil bowl holds 225 cc, and the unit weighs 1910 g.
The L code specifies a 0.15-0.4 MPa range instead of the standard 0.15-0.9 MPa. It suits applications that only need modest pressure, but if your line might ever require more, the standard S type is the safer choice.
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