Airtac GAC F.R.L. Unit GAC50020ALWK
The AirTAC Airtac GAC F.R.L. Unit GAC50020ALWK 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 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 GAC50020ALWK
Delivering cleaned, lubricated and precisely regulated air for demanding pneumatics, this AirTAC GAC50020ALWK combines a filter, regulator and lubricator on a single L-shape bracket. The 3/4in port serves a 2460 g assembly that uses a 5 um element to capture fine particulates. Because the lubricator sits last in the sequence, oil mist is introduced downstream of the regulator seat, preventing fouling. A circular gauge is fitted, reading MPa/psi for the default PT thread.
This specific configuration employs an automatic drain to clear condensate from the 108 cc bowl without operator intervention. The reverse-flow (reflux) valve is fitted, which the catalogue shows as a separate pneumatic symbol with details on its own page. Operating pressure is set to the lower range of 0.15-0.4 MPa (20-58 psi), making it suitable for sensitive circuits, while the 225 cc oil reservoir extends maintenance intervals.
Airtac GAC F.R.L. Unit GAC50020ALWK Technical Specifications
| Model | Airtac GAC F.R.L. Unit GAC50020ALWK |
|---|---|
| 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. The fitted circular gauge reads in MPa / psi, set by the PT thread code.
Model Code: Airtac GAC F.R.L. Unit GAC50020ALWK
| 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. |
| 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 GAC50020ALWK Is Used
Textile Machinery Headers
Feeds low-pressure air to loom and spinning frame actuator lines where delicate fabric handling requires a strict 0.4 MPa ceiling and continuous oil mist.
Carton Erector Lines
Conditions air for pneumatic folding arms and sealers, using the 5 um element to protect precision grippers from fine dust in recycled board environments.
Laboratory Gas Panels
Prepares instrument air for low-force test rigs, relying on the automatic drain to keep the 108 cc bowl empty during extended automated test cycles.
Is the Airtac GAC F.R.L. Unit GAC50020ALWK the Right Air-Prep Unit?
Choose this lower-pressure type (L) for applications strictly requiring 0.15-0.4 MPa (20-58 psi); if the machine may ever need more, the L type is the wrong part. The 5 um (W) element traps far finer particles than the standard 40 um grade for precision valves, at the cost of more frequent element service. The automatic drain (A) is decisive for unattended or wet lines, and the fitted gauge lets operators read the set pressure directly in MPa/psi. If the downstream line must stay oil-free, the lubricator must be omitted and a separate filter-regulator chosen instead. The three units are separately orderable as GAF500-20, GAR500-20 and GAL500-20, so a clogged element does not mean replacing the whole assembly. The catalogue flow curve for the GAC500 is plotted to 7000 L/min at 0.7 MPa inlet, which is roughly 58% of the GAC600's 12000 L/min envelope, while its 108 cc drain bowl holds about 1.8x the condensate of the GAC400's 100 cc capacity. Choosing this lower-pressure type means its 0.4 MPa ceiling is just 44% of the Standard type's 0.9 MPa maximum.
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 GAC50020ALWK FAQ
This lower-pressure unit regulates from 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 operates from -5 to 70 C, weighs 2460 g, and features a 108 cc drain bowl with a 225 cc oil bowl. The recommended lubricant is ISO VG 32, and the filtering grade is 5 um.
The K indicates that a reverse-flow (reflux) valve is fitted. The official catalogue shows this as a separate pneumatic symbol with details on its own page, representing an ordering difference on this specific assembly.
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.
Related AirTAC Air-Preparation Units
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