Airtac GAFC Air Service Unit GAFC50020AS
The AirTAC Airtac GAFC Air Service Unit GAFC50020AS 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
- 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 GAFC50020AS
This GAFC50020AS is a two-piece F.R.L. combination: a filter-regulator body and a separate lubricator mounted on a shared T-bracket with quick clamps. The 3/4in port and 1910 g mass place it in the upper mid-range of the GAFC family, sized for a machine header or a multi-station line rather than a single small actuator.
The filter and regulator share one housing, so condensate and solids drop out first, then pressure is set to the 0.15-0.9 MPa (20-130 psi) band, and finally the lubricator adds a metered oil mist downstream. The 40 um element handles standard shop air, and the automatic drain clears the 108 cc condensate bowl without an operator. A circular gauge is fitted, reading MPa and psi on a dual-scale dial.
Airtac GAFC Air Service Unit GAFC50020AS Technical Specifications
| Model | Airtac GAFC Air Service Unit GAFC50020AS |
|---|---|
| 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 | 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 GAFC50020AS
| 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. |
| (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 GAFC50020AS Is Used
Machine tool coolant systems
Feed a 3/4in header supplying coolant valves and actuators on a CNC lathe, where the automatic drain handles condensate from humid shop air without daily attention.
Assembly line pallet stops
Run a multi-station conveyor with pneumatically actuated pallet stops and locating pins, using the regulated 0.15-0.9 MPa output to keep cycle times consistent across shifts.
Test bench air supply
Provide filtered, lubricated air to a hydraulic test rig's pneumatic clamping fixtures, where the 108 cc bowl and 225 cc oil reservoir reduce service intervals during long test runs.
Is the Airtac GAFC Air Service Unit GAFC50020AS the Right Air-Prep Unit?
Choose GAFC500 for a 3/4in line that needs both filtration and lubrication in a compact footprint. The automatic drain suits wet or unattended lines, while the PC bowl is the standard build - confirm it matches your environment, as the catalogue gives no material-specific ratings. The 40 um element is the default; step to 5 um with a W code if you feed precision valves, accepting more frequent element service. The PT thread carries a MPa/psi gauge scale; G or NPT options change both thread and scale. The two units are orderable separately 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 inlet pressure carefully if you need the full output.
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 GAFC50020AS FAQ
This F.R.L. combination operates at 0.15-0.9 MPa (20-130 psi) with a 1.0 MPa (145 psi) maximum and 1.5 MPa (215 psi) proof pressure. It has a 108 cc condensate bowl and a 225 cc oil bowl, weighs 1910 g, and works in -5 to 70 C temperatures. Use ISO VG 32 lubricant. The 40 um filter element handles standard shop air.
The A code specifies an automatic drain that expels condensate from the 108 cc bowl without operator action, which is ideal for wet lines or machines that run unattended. It replaces the semi-auto and manual drains found on blank-drain models, so you do not need to schedule manual dumps.
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1-Year Warranty
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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Most inquiries answered within 7-8 hours.
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