Airtac GAC F.R.L. Unit GAC500N20LWK
The AirTAC Airtac GAC F.R.L. Unit GAC500N20LWK 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 materialNylon
- Drainsemi-auto + manual
- Pressure gaugeCircular, MPa / psi
- Weight2460 g
About the Airtac GAC F.R.L. Unit GAC500N20LWK
Delivering cleaned, regulated and lubricated air for demanding pneumatics, this AirTAC F.R.L. combination integrates a filter, regulator and lubricator on a single L-shape bracket. The 3/4in port pairs with a 5 um element to trap fine particulates before they reach sensitive downstream valves. A nylon bowl equips this 2460 g assembly, and the standard PT thread pairs with a fitted circular gauge reading MPa/psi.
Air flows through the filter first, then the regulator, ensuring oil mist from the lubricator is added last so it never fouls the regulating seat. Because this is a lower-pressure type, the regulator operates at 0.15-0.4 MPa (20-58 psi). The reverse-flow (reflux) valve is fitted, which the catalogue shows as a separate pneumatic symbol with details on its own page.
Airtac GAC F.R.L. Unit GAC500N20LWK Technical Specifications
| Model | Airtac GAC F.R.L. Unit GAC500N20LWK |
|---|---|
| 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 | Nylon |
| 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 | 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 GAC500N20LWK
| GAC500 | GA500 series F.R.L. unit — sets ports, bowl capacity and weight. |
|---|---|
| N | Bowl material: Nylon. 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. |
| 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 GAC500N20LWK Is Used
Automotive Assembly Lines
Feeds large pneumatic presses and robotic arms on a vehicle production line, where the 5 um element protects precision actuators from fine debris.
Heavy Palletizing Cells
Supplies oil-misted air to heavy-duty grippers handling loaded pallets, utilizing the 3/4in port to maintain steady pressure across multiple cylinders.
Textile Manufacturing
Conditions air for high-speed looms and spinning frames where the lower 0.15-0.4 MPa pressure range prevents delicate fabric or fiber damage.
Is the Airtac GAC F.R.L. Unit GAC500N20LWK the Right Air-Prep Unit?
Choose this 3/4in body for substantial air flows, noting the catalogue flow curve for the GAC500 is plotted to 7000 L/min at 0.7 MPa inlet, compared to the GAC400 which is plotted to 6000 L/min. The 5 um element provides finer filtration than the standard 40 um grade, requiring more frequent element service to maintain protection for precision instruments. If the downstream line must remain completely oil-free, omit the lubricator and choose a dedicated filter-regulator instead.
Maintenance uses the GAF500-20, GAR500-20 and GAL500-20 spares, all sharing the same body and port suffix. The 108 cc condensate bowl and 225 cc oil sump dictate the service interval, and the semi-auto plus manual drain pair requires an operator to manage condensate removal. Stepping up from the GAC400 gives about 1.17x the plotted flow envelope.
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 GAC500N20LWK FAQ
This unit regulates pressure from 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). It operates from -5 to 70 C, weighs 2460 g, features a 108 cc drain bowl and a 225 cc oil bowl, and uses ISO VG 32 lubricant.
The K indicates a reverse-flow (reflux) valve is attached to this F.R.L. combination. The catalogue draws this as a distinct pneumatic symbol, and buyers should consult that specific page for functional details.
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Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
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Standard models usually ship in 3-4 days.
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Most inquiries answered within 7-8 hours.
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