Airtac GAC F.R.L. Unit GAC50020AL
The AirTAC Airtac GAC F.R.L. Unit GAC50020AL is a genuine three-unit F.R.L. combination — a filter, a pressure regulator and a lubricator pre-assembled on one 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
- Weight2460 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 GAC F.R.L. Unit GAC50020AL
Delivering cleaned, regulated and lubricated air for larger pneumatic setups, this GAC50020AL assembly integrates a filter, regulator and lubricator on a single L-shape bracket. The 3/4in port pairs with a 2460 g mass, placing it in a heavy-duty size class that requires a firm panel or frame mount rather than tubing support. Air passes through the 40 um element first, then the regulator, and finally the lubricator, ensuring oil mist is added downstream so the regulator seat never fouls. A circular gauge is fitted, reading MPa/psi for the default PT thread.
Because this is the lower-pressure type, the regulator tops out at 0.15-0.4 MPa (20-58 psi). The automatic drain clears condensate from the 108 cc bowl without an operator, a decisive feature for unattended or wet lines. The unit carries a 1.0 MPa (145 psi) maximum pressure, a 1.5 MPa (215 psi) proof pressure, and operates from -5 to 70 C using ISO VG 32 lubricant. Should a component fail, the assembly breaks down into separately orderable GAF500-20, GAR500-20 and GAL500-20 parts.
Airtac GAC F.R.L. Unit GAC50020AL Technical Specifications
| Model | Airtac GAC F.R.L. Unit GAC50020AL |
|---|---|
| Series | GAC500 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 | 2460 g |
Specifications follow the official AirTAC GAC catalogue (pages 216-217). Air must not freeze in the unit. The fitted circular gauge reads in MPa / psi, set by the PT thread code.
Model Code: Airtac GAC F.R.L. Unit GAC50020AL
| GAC500 | 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: GAF500-20 filter, GAR500-20 regulator, GAL500-20 lubricator — all three share this body and port.
Size Class & Flow Envelope
- GAC2001/8"-1/4" · 1750 L/min
- GAC3001/4"-1/2" · 3000 L/min
- GAC4003/8"-1/2" · 6000 L/min
- GAC5003/4" · 7000 L/min
- GAC6003/4"-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 | GAC500 · 3/4" · curve to 7000 L/min |
|---|---|
| One size down | GAC400 |
| One size up | GAC600 (curve to 12000 L/min) |
| Build order | Filter → bracket → regulator → lubricator |
Where the Airtac GAC F.R.L. Unit GAC50020AL Is Used
Textile Machinery Headers
Feeds low-pressure loom and spinning frames where a 3/4in supply distributes conditioned air across multiple weaving stations without exceeding 0.4 MPa.
Carton Erecting Lines
Supplies the larger pneumatic folding cylinders on automated box formers, relying on the 108 cc automatic drain to handle condensate during long production runs.
Light-Transfer Belt Systems
Drives the air jets and low-force diverters on package sorting conveyors, adding the exact oil mist needed to keep moving bushings alive.
Is the Airtac GAC F.R.L. Unit GAC50020AL the Right Air-Prep Unit?
Choose this 3/4in model for substantial air flows where the machinery strictly requires a low operating ceiling. The catalogue flow curve for the GAC500 is plotted to 7000 L/min at 0.7 MPa inlet, which is roughly 17% higher than the 6000 L/min envelope of the GAC400, giving you a clear sizing path if the smaller body chokes your duty point. The PC bowl is standard here, while the automatic drain suits wet lines that cannot wait for manual intervention. Remember that oil mist is added downstream; choose a filter-regulator instead if the line must stay oil-free. Spares share the GAF500-20, GAR500-20 and GAL500-20 suffixes.
Stepping down to this lower-pressure type means the 0.4 MPa ceiling is just 44% of the 0.9 MPa standard type maximum, so verify your machine never needs more pressure before committing.
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 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 2460 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 filter-regulator instead of an F.R.L. combination on that branch.
Airtac GAC F.R.L. Unit GAC50020AL FAQ
The GAC50020AL operates at 0.15-0.4 MPa (20-58 psi) with a maximum pressure of 1.0 MPa (145 psi) and a proof pressure of 1.5 MPa (215 psi). It functions in temperatures from -5 to 70 C using ISO VG 32 lubricant. The unit weighs 2460 g, features a 108 cc drain bowl, a 225 cc oil bowl, and uses a 40 um element.
The A in the code specifies the automatic drain, which empties the 108 cc condensate bowl without operator intervention, making it ideal for unattended lines. The L denotes the lower-pressure type, restricting regulation to 0.15-0.4 MPa (20-58 psi) for sensitive machinery. A circular gauge reading MPa/psi is fitted to the PT thread so operators can verify the low setpoint.
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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.
Related AirTAC Air-Preparation Units
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