Airtac GAFC Air Service Unit GAFC50020ASWK
The AirTAC Airtac GAFC Air Service Unit GAFC50020ASWK 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 - 0.9 MPa (20 - 130 psi).
- TypeF.R.L. combination
- Port size3/4"
- Pressure range0.15 - 0.9 MPa (20 - 130 psi)
- Filtering grade5 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 GAFC50020ASWK
This GAFC50020ASWK is a two-piece F.R.L. combination: a filter-regulator body paired with a lubricator, mounted on a shared T-bracket with quick clamps. Air enters the 3/4in port, gets filtered and regulated to 0.15-0.9 MPa (20-130 psi), then oil mist is metered in downstream. The 5 um element traps fine particles for sensitive equipment, and the automatic drain clears condensate without an operator.
The 108 cc drain bowl and 225 cc oil bowl mean this 1910 g unit suits a machine header or multi-station line where frequent service visits are impractical. A circular gauge is fitted, reading MPa/psi for the PT thread. The reverse-flow (reflux) valve is included, shown as a separate symbol in the catalogue. Max pressure is 1.0 MPa (145 psi), proof is 1.5 MPa (215 psi), and the operating range is -5 to 70 C with ISO VG 32 oil.
Airtac GAFC Air Service Unit GAFC50020ASWK Technical Specifications
| Model | Airtac GAFC Air Service Unit GAFC50020ASWK |
|---|---|
| Series | GAFC500 F.R.L. combination |
| Port size | 3/4" (PT thread) |
| Filtering grade | 5 µm |
| Pressure range | 0.15 - 0.9 MPa (20 - 130 psi) |
| Type | Standard |
| 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 GAFC50020ASWK
| 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. |
| S | Standard type — 0.15 - 0.9 MPa (20 - 130 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. |
| K | Reverse-flow (reflux) valve attached. |
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 GAFC50020ASWK Is Used
Machine tool coolant systems
Feed a 3/4in header supplying coolant valves and clamping cylinders on a CNC machining center, where the 5 um element keeps fine abrasive dust out of pilot valves.
Multi-station assembly lines
Power a bank of pneumatic actuators on an automotive assembly conveyor, where the 225 cc oil bowl keeps lubricators topped up across long shifts.
Packaging film tensioning
Regulate air for web-tensioning brakes on a packaging line, where the automatic drain prevents water carryover during humid summer operation.
Is the Airtac GAFC Air Service Unit GAFC50020ASWK the Right Air-Prep Unit?
Choose this GAFC500 if your line needs 3/4in ports and a 7000 L/min flow envelope (plotted at 0.7 MPa inlet) for a machine header or multi-station assembly. The PC bowl is the standard build; confirm it suits your environment, as the catalogue gives no material-specific ratings. The automatic drain is the right call for unattended operation, and the 5 um element protects precision valves but will need more frequent service than a 40 um unit. The gauge reads MPa/psi on the PT thread, and the reflux valve is fitted per the K code. Spares are orderable as GAFR500-20 and GAL500-20. With a 1.0 MPa max supply, you have about 0.1 MPa of headroom above the 0.9 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 GAFC50020ASWK FAQ
This F.R.L. combination operates at 0.15-0.9 MPa (20-130 psi) with a 1.0 MPa (145 psi) max and 1.5 MPa (215 psi) proof pressure. Temperature range is -5 to 70 C. The drain bowl holds 108 cc and the oil bowl 225 cc. Recommended lubricant is ISO VG 32. The unit weighs 1910 g with a 3/4in port.
The A code specifies an automatic drain that expels condensate from the 108 cc bowl without operator action, which is ideal for unattended machinery. The 5 um element filters fine particles, and the K code adds a reverse-flow valve. The circular gauge reads MPa/psi on the PT thread.
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