Airtac GAFC Air Service Unit GAFC500N20ALW
The AirTAC Airtac GAFC Air Service Unit GAFC500N20ALW 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 5 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 grade5 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 GAFC500N20ALW
This AirTAC GAFC500N20ALW is an F.R.L. combination where the filter and regulator share one body, and a lubricator is paired on a T-bracket. Air enters the 3/4in port, gets filtered by the 5 um element, and is regulated down to the lower pressure band of 0.15-0.4 MPa (20-58 psi). The nylon bowl holds 108 cc of condensate, while the separate oil bowl holds 225 cc, and the whole unit weighs 1910 g.
The automatic drain clears water without an operator, which suits a line that runs unattended. Because the lubricator adds oil mist last, downstream of the regulator, the oil never travels back through the regulator seat. This two-piece build means one less inter-unit joint to seal compared to a three-body train, and the 5 um element traps finer particles for more sensitive equipment downstream.
Airtac GAFC Air Service Unit GAFC500N20ALW Technical Specifications
| Model | Airtac GAFC Air Service Unit GAFC500N20ALW |
|---|---|
| Series | GAFC500 F.R.L. combination |
| Port size | 3/4" (PT thread) |
| Filtering grade | 5 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 GAFC500N20ALW
| 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. |
| W | Filtering grade 5 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 GAFC500N20ALW Is Used
Precision valve control
Feed a bank of precision pneumatic valves on a packaging line where the 5 um element keeps fine particles out of pilot ports and the lower pressure range protects sensitive actuators.
Unattended machine station
Mount on a multi-station assembly machine where the automatic drain clears condensate without an operator, and the 225 cc oil bowl keeps lubrication running between shifts.
Low-pressure test rig
Supply a test fixture that needs regulated air at 0.15-0.4 MPa (20-58 psi) for leak checking, where the 3/4in port supports the flow without oversized components.
Is the Airtac GAFC Air Service Unit GAFC500N20ALW the Right Air-Prep Unit?
The GAFC500 body with a 3/4in port sits between the GAFC400 (1/2in port, 1810 g) and the GAFC600 (3/4in or 1in port, 3430 g). Its 108 cc drain bowl and 225 cc oil bowl are nearly double the GAFC400's 100 cc and 185 cc capacities, so this size needs less frequent attention. The nylon bowl is a material choice, and the shared specification of 1.0 MPa max and -5 to 70 C does not change with it; confirm the material suits your environment. The automatic drain clears condensate without an operator, ideal for wet or unattended lines. The L type regulates from 0.15 to 0.4 MPa (20-58 psi), so if your machine may ever need more than 0.4 MPa, this is the wrong part. A circular gauge is fitted and reads in MPa and psi for the default PT thread. The 5 um element catches finer particles than the standard 40 um, but it will need more frequent service. Replacement units are orderable separately as the GAFR500-20 filter & regulator and the GAL500-20 lubricator. The 1.0 MPa max supply leaves about 0.6 MPa above the 0.4 MPa top of the range, so plan your inlet pressure accordingly.
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 GAFC500N20ALW FAQ
The GAFC500N20ALW operates at 0.15-0.4 MPa (20-58 psi) with a max pressure of 1.0 MPa (145 psi) and proof pressure of 1.5 MPa (215 psi). It works in temperatures from -5 to 70 C and uses ISO VG 32 lubricant. The drain bowl holds 108 cc, the oil bowl holds 225 cc, and the unit weighs 1910 g. The 5 um element filters the air, and the automatic drain clears condensate without an operator.
The L type regulates from 0.15 to 0.4 MPa (20-58 psi), while the standard S type goes up to 0.9 MPa (130 psi). The 0.4 MPa ceiling is about 44% of the standard's 0.9 MPa top, so this unit is for low-pressure applications only. If your machine may ever need more than 0.4 MPa, choose the standard type instead.
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Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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