Airtac GAC F.R.L. Unit GAC50020LK
The AirTAC Airtac GAC F.R.L. Unit GAC50020LK 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
- Drainsemi-auto + manual
- 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 GAC50020LK
Delivering cleaned, regulated and lubricated air for demanding pneumatic setups, this GAC50020LK assembly integrates a filter, regulator and lubricator on a single L-shape bracket. The 3/4in port feeds a 2460 g body that requires a solid panel or frame mount rather than tubing support. A 40 um element captures solid particles, while the lower-pressure type restricts regulation to 0.15-0.4 MPa (20-58 psi). The default PT thread pairs with a fitted circular gauge reading MPa/psi.
Air travels through the filter, then the regulator, and finally the lubricator, ensuring oil mist is added downstream so the regulator seat never fouls. The PC bowl holds 108 cc of condensate and 225 cc of oil, dictating the maintenance interval. This specific configuration includes a reverse-flow (reflux) valve, which the catalogue illustrates as a separate pneumatic symbol with details on its own page.
Airtac GAC F.R.L. Unit GAC50020LK Technical Specifications
| Model | Airtac GAC F.R.L. Unit GAC50020LK |
|---|---|
| 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 | 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 GAC50020LK
| 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". |
| (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. |
| (blank) | Filtering grade 40 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 GAC50020LK Is Used
Textile Manufacturing Lines
Feeds low-pressure air to large loom and weaving arrays where delicate yarn handling demands a strict 0.4 MPa ceiling.
Packaging Sorting Diverters
Supplies oil-misted air to high-speed pneumatic pushers on 3/4in distribution lines that route parcels through automated hubs.
Large Assembly Fixtures
Conditions air for multi-clamp fixtures on automotive subassembly stations, relying on the 225 cc oil bowl for extended duty cycles.
Is the Airtac GAC F.R.L. Unit GAC50020LK the Right Air-Prep Unit?
Choose this 3/4in unit when a machine header requires low-pressure control capped at 0.4 MPa. The semi-auto and manual drain pair is fitted, emptying the 108 cc bowl on every pressure drop or on demand. If the application must remain oil-free, omit the lubricator and select a standalone filter-regulator instead. For future maintenance, the assembly accepts individual GAF500-20, GAR500-20 and GAL500-20 replacement units. Stepping down to the GAC400 drops the plotted flow envelope from 7000 L/min to 6000 L/min at 0.7 MPa inlet, whereas moving up to the GAC600 increases it to 12000 L/min. Because the lower-pressure type tops out at 0.4 MPa, it provides just 44% of the standard 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 GAC50020LK 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). It features a 3/4in port, a 40 um element, a 108 cc drain bowl, a 225 cc oil bowl, and weighs 2460 g. The temperature range is -5 to 70 C, and the recommended lubricant is ISO VG 32.
The K indicates that a reverse-flow (reflux) valve is attached to this unit. The official catalogue shows this component as a distinct pneumatic symbol with its own dedicated page for reference.
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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