Airtac GAFC Air Service Unit GAFC500N20LNWK
The AirTAC Airtac GAFC Air Service Unit GAFC500N20LNWK 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
- Drainsemi-auto + manual
- 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 GAFC500N20LNWK
This F.R.L. combination pairs a filter-regulator with a lubricator on a single T-bracket, so the air is cleaned, set to pressure, then given a metered oil mist as the last step. The GAFC500 body takes a 3/4in port and weighs 1910 g, putting it in the upper size class for machine headers rather than individual actuators.
The lower-pressure type regulates from 0.15 to 0.4 MPa (20-58 psi), with a 5 um element fitted to catch fine particles. The nylon bowl holds 108 cc of condensate and the oil bowl holds 225 cc, so service intervals are long for a unit this size. Since the gauge is omitted, the 1/4in gauge connection is ready for an add-on if you need to read the set pressure.
Airtac GAFC Air Service Unit GAFC500N20LNWK Technical Specifications
| Model | Airtac GAFC Air Service Unit GAFC500N20LNWK |
|---|---|
| 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 | 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 | 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 GAFC500N20LNWK
| 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". |
| (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). |
| 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 GAFC500N20LNWK Is Used
Machine tool coolant systems
Feed a 3/4in header on a CNC lathe or milling center where the lower pressure range suits coolant valves and the 5 um element protects precision solenoids from fine wear particles.
Multi-station assembly conveyors
Supply a line of pneumatic clamps and stops on an automotive assembly conveyor, where the 225 cc oil bowl keeps several lubricated actuators running between shifts without frequent topping up.
Packaging line air preparation
Prepare air for a carton erector or case packer with multiple cylinders, using the 108 cc condensate bowl to handle moisture from a wet compressor line and the lower pressure range to match light-duty grippers.
Is the Airtac GAFC Air Service Unit GAFC500N20LNWK the Right Air-Prep Unit?
Choose the GAFC500 when a 3/4in line feeds several stations and you want fewer visits for bowl maintenance. The nylon bowl is named for its build, but the common specification of 1.0 MPa max and -5 to 70 C applies to all bowl materials, so confirm nylon suits your environment. The semi-auto drain dumps condensate when pressure drops and the manual drain works on demand, while the 5 um element traps finer particles than the standard 40 um at the cost of more frequent element changes. The reverse-flow (reflux) valve is fitted, and the PT thread carries a gauge scale in MPa/psi if you add one later. Spares are the GAFR500-20 filter-regulator and GAL500-20 lubricator, both orderable separately. With a 1.0 MPa max supply, you have about 0.6 MPa above the 0.4 MPa top of this unit's regulated band.
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 GAFC500N20LNWK FAQ
The working pressure range is 0.15-0.4 MPa (20-58 psi), with a maximum pressure of 1.0 MPa (145 psi) and proof pressure of 1.5 MPa (215 psi). Operating temperature is -5 to 70 C. The drain bowl holds 108 cc and the oil bowl holds 225 cc. Recommended lubricant is ISO VG 32. The complete unit weighs 1910 g.
The N in the code after the port means no gauge is supplied. The GAFC500 body has a 1/4in gauge connection, so you can add a circular gauge later if you need to read the set pressure. The PT thread on this model would use a gauge with an MPa/psi scale.
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Standard models are processed and dispatched in 3-5 business days.
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