Airtac GAFC Air Service Unit GAFC500N20ALNWK
The AirTAC Airtac GAFC Air Service Unit GAFC500N20ALNWK is a genuine two-piece F.R.L. combination — a GA-series filter & regulator and a lubricator pre-assembled on one T-shape 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
- Drainautomatic
- Pressure gaugeNot fitted
- Weight1910 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 GAFC Air Service Unit GAFC500N20ALNWK
This GAFC500 F.R.L. combination pairs a filter-regulator body with a lubricator on a single T-bracket, cutting the piece count to two while keeping all three functions. The 3/4in port and 1910 g mass place it in the mid-large class, sized for a machine header rather than a single actuator.
Air enters the first body where the 5 um element traps fine particles and the lower-pressure regulator sets output between 0.15-0.4 MPa (20-58 psi). The lubricator then meters ISO VG 32 oil mist into the flow, so the regulated seat never sees oil. The nylon bowl holds 108 cc of condensate while the oil bowl holds 225 cc, and the automatic drain clears water without an operator.
Airtac GAFC Air Service Unit GAFC500N20ALNWK Technical Specifications
| Model | Airtac GAFC Air Service Unit GAFC500N20ALNWK |
|---|---|
| Series | GAFC500 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 | 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 | 1910 g |
Specifications follow the official AirTAC GAFC catalogue (pages 219-220). Air must not freeze in the unit. No gauge is supplied with this model — the gauge connection on a GAFC500 is 1/4" if you add one.
Model Code: Airtac GAFC Air Service Unit GAFC500N20ALNWK
| GAFC500 | 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". |
| 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: GAFR500-20 filter & regulator, GAL500-20 lubricator — both share this body and port. A GAFC has two units, not three: the filter and the regulator are one body.
Size Class & Flow Envelope
- GAFC2001/8"-1/4" · 1750 L/min
- GAFC3001/4"-1/2" · 3500 L/min
- GAFC4003/8"-1/2" · 6000 L/min
- GAFC5003/4" · 7000 L/min
- GAFC6003/4"-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 | GAFC500 · 3/4" · curve to 7000 L/min |
|---|---|
| One size down | GAFC400 |
| One size up | GAFC600 (curve to 12000 L/min) |
| Build order | Filter & regulator → bracket → lubricator |
Where the Airtac GAFC Air Service Unit GAFC500N20ALNWK Is Used
Precision machining center
Feed a CNC machining center's tool-changing mechanism with 5 um filtered air at a stable 0.3 MPa, where the lower-pressure range prevents over-cycling and the automatic drain handles frequent condensation.
Assembly line pallet stopper
Power a pallet positioning stopper on an automotive assembly line, using the 3/4in port to maintain response speed while the 225 cc oil bowl keeps the cylinder lubricated across long shifts.
Packaging machine gripper
Operate a carton-erecting gripper on a packaging line where the 0.4 MPa ceiling protects lightweight aluminum cylinders, and the 108 cc condensate bowl extends time between maintenance visits.
Is the Airtac GAFC Air Service Unit GAFC500N20ALNWK the Right Air-Prep Unit?
Choose this model when your line needs fine filtration at 5 um and a regulated ceiling of 0.4 MPa - if the machine may ever require more than that, the lower-pressure type is the wrong part. The nylon bowl is a build choice; confirm it suits your surroundings since the catalogue gives no material-specific data. No gauge is supplied, so the 1/4in gauge connection is where you would add one to read the set pressure. The reverse-flow valve is fitted per the K code, and the automatic drain suits unattended operation. Spares are orderable as GAFR500-20 and GAL500-20. The 1.0 MPa max supply leaves about 0.6 MPa above the 0.4 MPa top of the range, so plan the inlet pressure with that margin in mind.
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-regulator 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 1910 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 plain GAFR500-20 filter-regulator on that branch instead of the full combination.
Airtac GAFC Air Service Unit GAFC500N20ALNWK FAQ
This lower-pressure unit operates from 0.15-0.4 MPa (20-58 psi) with a maximum supply of 1.0 MPa (145 psi) and proof pressure of 1.5 MPa (215 psi). Temperature range is -5 to 70 C, and it uses ISO VG 32 lubricant. The drain bowl holds 108 cc, the oil bowl holds 225 cc, and the complete assembly weighs 1910 g with a 3/4in port.
The N after the port code means no gauge is supplied; the 1/4in gauge connection is available if you add one later. The K code indicates a reverse-flow valve is fitted, which the catalogue shows as a separate pneumatic symbol. The A code specifies an automatic drain that clears condensate without manual intervention.
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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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