Airtac GAFC Air Service Unit GAFC50020S
The AirTAC Airtac GAFC Air Service Unit GAFC50020S 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 - 0.9 MPa (20 - 130 psi).
- TypeF.R.L. combination
- Port size3/4"
- Pressure range0.15 - 0.9 MPa (20 - 130 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 GAFC50020S
This GAFC50020S is a two-piece F.R.L. combination: a filter-regulator body that cleans the air and sets pressure, plus a lubricator that adds a metered oil mist downstream. The 3/4in port and 1910 g mass place it in the mid-large size class, suited for a machine header feeding several actuators rather than a single small cylinder.
The standard pressure range is 0.15-0.9 MPa (20-130 psi), with a 40 um element trapping solids and water droplets. The 108 cc condensate bowl and 225 cc oil bowl are both transparent PC, and the circular gauge reads in MPa and psi. Max supply is 1.0 MPa (145 psi), so the 0.9 MPa top setting leaves only about 0.1 MPa of headroom for inlet pressure above the setpoint.
Airtac GAFC Air Service Unit GAFC50020S Technical Specifications
| Model | Airtac GAFC Air Service Unit GAFC50020S |
|---|---|
| Series | GAFC500 F.R.L. combination |
| Port size | 3/4" (PT thread) |
| Filtering grade | 40 µm |
| Pressure range | 0.15 - 0.9 MPa (20 - 130 psi) |
| Type | Standard |
| 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 GAFC50020S
| 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. |
| 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. |
| (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 GAFC50020S Is Used
Machine tool coolant systems
Feed a 3/4in header supplying coolant valves and cylinder actuators on a CNC lathe, where regulated pressure and oil mist keep moving parts reliable.
Multi-station assembly lines
Provide lubricated air to a bank of pneumatic clamps and pushers on a pallet conveyor, with the 225 cc oil bowl reducing refill stops.
Packaging film sealing stations
Run heated jaw actuators and film tensioning cylinders from one regulated source, with the 40 um element protecting precision valves.
Is the Airtac GAFC Air Service Unit GAFC50020S the Right Air-Prep Unit?
Choose the GAFC500 when a 3/4in line needs filtered, regulated, lubricated air for multiple devices. The 7000 L/min flow curve at 0.7 MPa inlet is a sizing envelope, not a rated capacity, so verify your actual duty point against it. The PC bowl is the standard build; confirm it suits your environment since the catalogue gives no material-specific ratings. The semi-auto drain dumps condensate when pressure drops, while the manual drain works on demand. The fitted gauge shows MPa and psi for the PT thread. If the line must stay oil-free, omit the lubricator and select a plain GAFR500-20 filter-regulator instead; the GAL500-20 lubricator is separately orderable. The 108 cc drain bowl holds about 1.9x the condensate of the GAFC400's 100 cc bowl, so this size needs less frequent attention.
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 GAFC50020S FAQ
The working pressure range is 0.15-0.9 MPa (20-130 psi), with a 1.0 MPa (145 psi) maximum and 1.5 MPa (215 psi) proof pressure. Operating temperature is -5 to 70 C. The drain bowl holds 108 cc and the oil bowl 225 cc. Use ISO VG 32 lubricant. The complete unit weighs 1910 g.
The GAFC50020S ships with both a semi-auto drain and a manual drain. The semi-auto drain opens automatically when air pressure drops, releasing collected condensate, while the manual drain lets an operator purge the 108 cc bowl on demand without waiting for a pressure cycle.
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Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
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