Airtac GAC F.R.L. Unit GAC50020ALK
The AirTAC Airtac GAC F.R.L. Unit GAC50020ALK 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 GAC50020ALK
Delivering cleaned, regulated and lubricated air for heavy pneumatic lines, this AirTAC GAC50020ALK combines a filter, regulator and lubricator on a single L-shape bracket. The 3/4in port serves substantial flow requirements, while the lower-pressure type restricts the operating band to 0.15-0.4 MPa (20-58 psi). A 40 um element captures solid grain before the regulator sets the downstream pressure, and the lubricator introduces oil mist last so the regulator seat stays clean.
Weighing 2460 g, the assembly requires a firm panel or frame mount rather than tubing support. The PC bowl pairs with an automatic drain to clear the 108 cc condensate sump without an operator, which is decisive for unattended machinery. A circular gauge is fitted to read the set pressure in MPa/psi, and the reverse-flow (reflux) valve is included as a separate pneumatic symbol detailed in the catalogue.
Airtac GAC F.R.L. Unit GAC50020ALK Technical Specifications
| Model | Airtac GAC F.R.L. Unit GAC50020ALK |
|---|---|
| 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 GAC50020ALK
| 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. |
| 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 GAC50020ALK Is Used
Textile Manufacturing Lines
Feeds large weaving or spinning machines where a massive volume of low-pressure air drives multi-station actuator arrays without exceeding 0.4 MPa.
Heavy Material Handling
Conditions air for heavy-duty pneumatic conveyors and bulk powder transfer systems, relying on the 108 cc automatic drain for unattended wet environments.
Palletizing Robotics
Supplies regulated, lubricated air to large end-of-arm gripper tooling on palletizers, ensuring smooth actuation under continuous cyclic duty.
Is the Airtac GAC F.R.L. Unit GAC50020ALK the Right Air-Prep Unit?
Choose this 3/4in unit for low-pressure circuits needing substantial air volume, stepping up from the GAC400 which plots to 6000 L/min at 0.7 MPa inlet versus this body's 7000 L/min envelope. The automatic drain suits wet lines, while the PC bowl handles standard -5 to 70 C environments. Because the L type tops out at 0.4 MPa, select a standard S type if the machine might ever need more pressure. Note that oil mist is added downstream; choose a filter-regulator if the line must stay oil-free. Spares share the 500-20 suffix: GAF500-20, GAR500-20, GAL500-20. Keep in mind the 0.4 MPa ceiling is 44% of the standard 0.9 MPa maximum, firmly capping your downstream output.
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 GAC50020ALK 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, uses a 40 um element, and weighs 2460 g. The condensate bowl holds 108 cc and the oil bowl holds 225 cc, requiring ISO VG 32 lubricant.
The K indicates a reverse-flow (reflux) valve is fitted. The catalogue shows this as a separate pneumatic symbol with details on its own page, representing an ordering difference for 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.
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