Airtac GAFC Air Service Unit GAFC500N20ALNK
The AirTAC Airtac GAFC Air Service Unit GAFC500N20ALNK 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 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 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 GAFC500N20ALNK
This GAFC500 F.R.L. combination pairs a filter-regulator with a lubricator on a single T-bracket, cutting the piece count to two where a three-body train would need three. The 3/4in port and 1910 g mass put it in the upper mid-size class, demanding a proper panel or frame mount rather than tubing support. Air enters the first body, where the 40 um element removes solids and moisture and the regulator sets pressure to 0.15-0.4 MPa (20-58 psi); the lubricator then adds a metered oil mist downstream, so oil never travels back through the regulator seat.
The nylon bowl is specified here, and the shared specification of 1.0 MPa (145 psi) max and -5 to 70 C applies regardless of material, so confirm nylon suits your environment before ordering. The automatic drain clears condensate without an operator, and the 108 cc drain bowl plus 225 cc oil bowl define how often someone must attend the unit. No gauge is supplied with this code, but the 1/4in gauge connection is ready if you add one later.
Airtac GAFC Air Service Unit GAFC500N20ALNK Technical Specifications
| Model | Airtac GAFC Air Service Unit GAFC500N20ALNK |
|---|---|
| Series | GAFC500 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 | 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 GAFC500N20ALNK
| 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. |
| (blank) | Filtering grade 40 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 GAFC500N20ALNK Is Used
Machine Tool Header
Feed a 3/4in header on a CNC machining center, supplying filtered, regulated, and lubricated air to the spindle air curtain and workholding clamps.
Multi-Station Assembly Line
Protect a bank of pneumatic cylinders on a pallet conveyor system, where the 225 cc oil bowl keeps lubricator refills infrequent across several shifts.
Packaging Line Actuators
Run a case packer's pusher and flap folders with consistent 0.15-0.4 MPa regulation, while the automatic drain handles condensate in a humid bottling hall.
Is the Airtac GAFC Air Service Unit GAFC500N20ALNK the Right Air-Prep Unit?
The GAFC500 body with a 3/4in port suits a machine header or a multi-station line where a single point of air preparation feeds several actuators. Compared to the GAFC400's 3/8in or 1/2in ports and 100 cc drain bowl, this unit handles a larger flow envelope and holds more condensate before service. The L type regulates only to 0.4 MPa, so if your process might ever need more than that, step up to the standard S type instead. The automatic drain is fitted, the nylon bowl is a build choice with no performance difference stated, and the reverse-flow valve is present per the K code. The 40 um element is the standard grade; the 5 um option would trap finer particles but require more frequent element changes. The PT thread comes with a gauge scale in MPa/psi, though no gauge is included here. Spare parts are orderable separately as the GAFR500-20 filter & regulator and the GAL500-20 lubricator. With a 1.0 MPa max supply, you have about 0.6 MPa of headroom above the 0.4 MPa top of this unit's regulated range.
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 GAFC500N20ALNK FAQ
This F.R.L. combination operates from 0.15 to 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). The temperature range is -5 to 70 C, and the recommended lubricant is ISO VG 32. The drain bowl holds 108 cc and the oil bowl holds 225 cc, with a total weight of 1910 g. The 3/4in port and 40 um element are standard for this body.
The N in the option code after the port specifies no gauge is supplied. The GAFC500 body has a 1/4in gauge connection, so you can add a compatible gauge later if you need to read the set pressure directly. The PT thread on this model would use a gauge with an MPa/psi scale.
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