Airtac GAFC Air Service Unit GAFC50020AL
The AirTAC Airtac GAFC Air Service Unit GAFC50020AL 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 materialPC
- 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 GAFC50020AL
The GAFC50020AL is a two-piece F.R.L. combination: a filter-regulator body with a 3/4in port, followed by a lubricator on a shared T-bracket. It filters to 40 um, regulates from 0.15 to 0.4 MPa (20-58 psi), and adds a metered oil mist last, so oil never travels back through the regulator seat.
The 108 cc condensate bowl and 225 cc oil bowl set the service rhythm, while the 1910 g mass means this unit needs a proper panel or frame mount rather than tubing support. The automatic drain clears water without an operator, and the circular gauge reads in MPa and psi for the default PT thread.
Airtac GAFC Air Service Unit GAFC50020AL Technical Specifications
| Model | Airtac GAFC Air Service Unit GAFC50020AL |
|---|---|
| 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 | PC |
| 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 GAFC50020AL
| GAFC500 | GA500 series F.R.L. unit — sets ports, bowl capacity and weight. |
|---|---|
| (blank) | Bowl material: PC. 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 GAFC50020AL Is Used
Low-Pressure Actuator Feed
Supply a 3/4in port line to a precision gripper or a soft-touch press that must not exceed 0.4 MPa, using the lower-pressure regulator to protect the tool.
Unattended Condensate Removal
Fit this unit on a packaging line's air prep station where the automatic drain clears water from the 108 cc bowl without a maintenance visit, keeping the line running.
Lubricated Multi-Valve Manifold
Feed a bank of pneumatic valves on a forming machine, where the 225 cc oil bowl sustains lubrication for extended shifts before needing a refill.
Is the Airtac GAFC Air Service Unit GAFC50020AL the Right Air-Prep Unit?
Choose the GAFC50020AL when you need a 3/4in port and a lower 0.15-0.4 MPa (20-58 psi) regulated band, typical for delicate actuators or low-pressure circuits. The automatic drain (A) suits unattended lines, and the PC bowl is the standard build; confirm it fits your environment, as the catalogue lists no material-specific ratings. The 40 um element is the default, with a 5 um option (W) for finer filtration at the cost of more frequent service.
For a higher pressure ceiling, step to the standard-type GAFC50020AS, which regulates to 0.9 MPa. Spare units are orderable as GAFR500-20 and GAL500-20. With a 1.0 MPa max supply, you have about 0.6 MPa of headroom above the 0.4 MPa top of this 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 GAFC50020AL FAQ
The GAFC50020AL operates from 0.15 to 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 -5 to 70 C temperatures, uses ISO VG 32 oil, has a 108 cc drain bowl and a 225 cc oil bowl, and weighs 1910 g.
The 'L' in the code specifies the lower-pressure type, capping the regulated output at 0.4 MPa instead of the standard 0.9 MPa. This suits applications needing gentle, consistent pressure, but if your machine may ever require more than 0.4 MPa, the standard-type GAFC50020AS is the correct choice.
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