Airtac GAFC Air Service Unit GAFC50020L
The AirTAC Airtac GAFC Air Service Unit GAFC50020L 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
- Drainsemi-auto + manual
- 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 GAFC50020L
This AirTAC GAFC50020L is an F.R.L. combination where the filter and regulator share one body, and a lubricator is mounted alongside on a T-bracket. It handles a 3/4in port and weighs 1910 g, placing it in the mid-large size class for shop-floor air preparation.
The lower-pressure type regulates from 0.15 to 0.4 MPa (20-58 psi), with a 40 um element filtering the air. The 108 cc condensate bowl and 225 cc oil bowl set the service interval, and the circular gauge reads in MPa/psi. Max supply is 1.0 MPa (145 psi), proof pressure 1.5 MPa (215 psi), and the unit operates from -5 to 70 C.
Airtac GAFC Air Service Unit GAFC50020L Technical Specifications
| Model | Airtac GAFC Air Service Unit GAFC50020L |
|---|---|
| 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 | Semi-auto drain + manual 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 GAFC50020L
| 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". |
| (blank) | Drain: Semi-auto drain + manual 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 GAFC50020L Is Used
Machine tool lubrication
Feed a 3/4in header supplying coolant pumps and slide-way lubricators on a CNC lathe, where the lower pressure range protects sensitive metering valves.
Assembly press stations
Power a multi-station pneumatic press with regulated 0.4 MPa air, ensuring consistent clamping force on automotive component assembly lines.
Packaging line air prep
Condition air for case packers and strapping machines, where the 225 cc oil bowl keeps lubricators filled through long production runs.
Is the Airtac GAFC Air Service Unit GAFC50020L the Right Air-Prep Unit?
The GAFC500 body with a 3/4in port suits machines that need substantial flow, with the catalogue flow curve plotted to 7000 L/min at 0.7 MPa inlet. The L type tops out at 0.4 MPa, so if your process may ever require more than that, step up to the standard S type instead. The PC bowl is the default build; confirm it suits your environment, as the specification does not change with bowl material. The semi-auto drain dumps condensate on pressure drop, while the manual drain gives on-demand control. A circular gauge is fitted, graduated in MPa/psi for the PT thread. The 5 um element (W code) is available for finer filtration if needed. Spare parts are orderable separately as the GAFR500-20 filter & regulator and the GAL500-20 lubricator. With a 1.0 MPa max supply, there is about 0.6 MPa of headroom above the 0.4 MPa top of the regulated 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 GAFC50020L FAQ
The GAFC50020L 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 temperatures from -5 to 70 C. The drain bowl holds 108 cc and the oil bowl 225 cc. Recommended lubricant is ISO VG 32. The complete unit weighs 1910 g.
The L code specifies a lower-pressure regulator, limiting output to 0.4 MPa instead of the standard 0.9 MPa. This suits applications with sensitive components that must not see higher pressures. If your system may need more than 0.4 MPa in the future, the standard S type is the safer choice.
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