Airtac GAFC Air Service Unit GAFC500N20ALN
The AirTAC Airtac GAFC Air Service Unit GAFC500N20ALN 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 GAFC500N20ALN
This AirTAC GAFC500N20ALN is a two-piece F.R.L. combination: a filter-regulator body paired with a lubricator on a T bracket. The 3/4in port and 1910 g mass put it in the mid-large size class, suited for a machine header feeding several actuators. It regulates to a lower 0.15-0.4 MPa (20-58 psi) band, with a 40 um element filtering the supply.
The nylon bowls hold 108 cc for condensate and 225 cc for oil, so the unit needs less frequent attention than smaller bodies. Air is filtered and set to pressure in the first body, then the lubricator adds a metered oil mist downstream. The automatic drain clears water without an operator, and the gauge connection is 1/4in if you add one later.
Airtac GAFC Air Service Unit GAFC500N20ALN Technical Specifications
| Model | Airtac GAFC Air Service Unit GAFC500N20ALN |
|---|---|
| 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 GAFC500N20ALN
| 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. |
| (blank) | No reverse-flow valve. |
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 GAFC500N20ALN Is Used
Low-Pressure Assembly
Feed a delicate press or clamping fixture that must never see more than 0.4 MPa, using the lower range to protect sensitive tooling.
Machine Header Supply
Supply a 3/4in header on a multi-station machine where several valves draw air, with the 225 cc oil bowl keeping lubricant available.
Test Bench Air
Provide regulated air to a test rig checking components at low pressure, where the automatic drain keeps the line clear during long runs.
Is the Airtac GAFC Air Service Unit GAFC500N20ALN the Right Air-Prep Unit?
Choose the GAFC500 when a 3/4in line serves several stations and you want the lower 0.15-0.4 MPa (20-58 psi) range for delicate circuits. The nylon bowl is a build choice; confirm it suits your environment, as the -5 to 70 C and 1.0 MPa (145 psi) max rating apply to all bowl materials. The automatic drain (A) suits wet or unattended lines, while the standard blank drain gives both semi-auto and manual options. No gauge is supplied with the N code, so plan to fit one at the 1/4in connection if operators need to read the setpoint. The 40 um element handles general shop air; select the W option for 5 um filtration if you have precision valves. Thread is PT with an MPa/psi gauge scale. 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 this unit suits systems that never need more than 58 psi.
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 GAFC500N20ALN FAQ
The GAFC500N20ALN operates at 0.15-0.4 MPa (20-58 psi) with a max pressure of 1.0 MPa (145 psi) and proof pressure of 1.5 MPa (215 psi). Temperature range is -5 to 70 C. The drain bowl holds 108 cc and the oil bowl 225 cc. Recommended lubricant is ISO VG 32. The unit weighs 1910 g and has a 3/4in port.
The N after the port code means no gauge is supplied. The gauge connection on the GAFC500 body is 1/4in, so you can fit a standard gauge there if you need to read the outlet pressure. The unit still regulates to the 0.15-0.4 MPa range, but you would need to add a gauge to verify the setpoint.
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Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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