Airtac GAC F.R.L. Unit GAC50020ALNWK
The AirTAC Airtac GAC F.R.L. Unit GAC50020ALNWK 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 5 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 grade5 µm
- Bowl materialPC
- Drainautomatic
- Pressure gaugeNot fitted
- 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 GAC50020ALNWK
Delivering cleaned, regulated and lubricated air for substantial pneumatic loads, this AirTAC GAC50020ALNWK combination integrates a filter, regulator and lubricator on a single L-shape bracket. The 3/4in port and 2460 g mass place it in a heavy-duty size class that requires a solid panel or frame mount rather than tubing support. Air passes through the 5 um element before the regulator, which sets a low outlet pressure of 0.15-0.4 MPa (20-58 psi); oil mist is introduced last so it never fouls the regulator seat.
Because the code carries an A, this unit uses an automatic drain to clear condensate from the 108 cc bowl without an operator, making it suitable for unattended or wet lines. No gauge is supplied, but a 1/4in gauge connection is provided if you need to add instrumentation later. The reverse-flow (reflux) valve is fitted, which the catalogue shows as a separate pneumatic symbol with details on its own page. If the downstream line must stay oil-free, omit the lubricator and choose a filter-regulator instead.
Airtac GAC F.R.L. Unit GAC50020ALNWK Technical Specifications
| Model | Airtac GAC F.R.L. Unit GAC50020ALNWK |
|---|---|
| Series | GAC500 F.R.L. combination |
| Port size | 3/4" (PT thread) |
| Filtering grade | 5 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. No gauge is supplied with this model — the gauge connection on a GAC500 is 1/4" if you add one.
Model Code: Airtac GAC F.R.L. Unit GAC50020ALNWK
| 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). |
| N | No pressure gauge; 1/4" gauge connection. |
| W | Filtering grade 5 µm. |
| (blank) | PT thread; gauge scale MPa / psi. |
| K | Reverse-flow (reflux) valve attached. |
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 GAC50020ALNWK Is Used
Textile Manufacturing Lines
Feeds low-pressure air to large weaving looms where a 3/4in port sustains airflow to multiple actuators while the 5 um element protects sensitive tensioning valves.
Automated Palletizers
Conditions air for heavy-duty pick-and-place arms operating at 0.3 MPa, relying on the automatic drain to clear moisture during continuous daily shifts.
Chemical Dosing Stations
Supplies metered, lubricated air to low-pressure metering pumps, using the reverse-flow valve fitting to meet specific process piping requirements.
Is the Airtac GAC F.R.L. Unit GAC50020ALNWK the Right Air-Prep Unit?
This model suits low-pressure applications requiring fine filtration and unattended condensate management. The 5 um element traps far finer particles than the standard 40 um grade, protecting precision valves at the cost of more frequent element service. The automatic drain is decisive for wet lines, whereas the blank option ships both semi-auto and manual drains. Stepping down to the GAC400 halves the plotted flow envelope to 6000 L/min at 0.7 MPa inlet and reduces the oil bowl to 185 cc, while stepping up to the GAC600 offers a 12000 L/min envelope. The three units are separately orderable as GAF500-20, GAR500-20 and GAL500-20, so a damaged bowl does not mean replacing the whole assembly. The lower-pressure type tops out at 0.4 MPa, which is about 44% of the Standard type's 0.9 MPa ceiling.
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 GAC50020ALNWK FAQ
This lower-pressure type operates at 0.15-0.4 MPa (20-58 psi) with a max pressure of 1.0 MPa (145 psi) and a proof pressure of 1.5 MPa (215 psi). The temperature range is -5 to 70 C. It features a 108 cc drain bowl, a 225 cc oil bowl, a 5 um element, and weighs 2460 g. The recommended lubricant is ISO VG 32.
The N in the code means no gauge is supplied from the factory. The body features a 1/4in gauge connection, allowing you to install a compatible instrument reading in MPa or psi to match the default PT thread scale if visual pressure monitoring is required.
Authorized Export Seller
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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