Airtac GAFC Air Service Unit GAFC500N20ASK
The AirTAC Airtac GAFC Air Service Unit GAFC500N20ASK 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 - 0.9 MPa (20 - 130 psi).
- TypeF.R.L. combination
- Port size3/4"
- Pressure range0.15 - 0.9 MPa (20 - 130 psi)
- Filtering grade40 µm
- Bowl materialNylon
- Drainautomatic
- Pressure gaugeCircular, MPa / psi
- 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 GAFC500N20ASK
The GAFC500N20ASK is a two-piece F.R.L. combination built for a 3/4in air line. The first body houses both the filter and the pressure regulator, so the air is cleaned and set to pressure in one pass; the second body is the lubricator, which adds a metered oil mist downstream. This unit weighs 1910 g and carries a 40 um element, with a working range of 0.15-0.9 MPa (20-130 psi).
The nylon bowl holds 108 cc of condensate, while the separate oil bowl holds 225 cc, so the service interval is set by these capacities. The automatic drain clears water without an operator, and the circular gauge reads in MPa and psi. A reverse-flow (reflux) valve is fitted, and the catalogue flow curve for this body is plotted to 7000 L/min at 0.7 MPa inlet.
Airtac GAFC Air Service Unit GAFC500N20ASK Technical Specifications
| Model | Airtac GAFC Air Service Unit GAFC500N20ASK |
|---|---|
| Series | GAFC500 F.R.L. combination |
| Port size | 3/4" (PT thread) |
| Filtering grade | 40 µm |
| Pressure range | 0.15 - 0.9 MPa (20 - 130 psi) |
| Type | Standard |
| 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. The fitted circular gauge reads in MPa / psi, set by the PT thread code.
Model Code: Airtac GAFC Air Service Unit GAFC500N20ASK
| 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. |
| S | Standard type — 0.15 - 0.9 MPa (20 - 130 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: 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 GAFC500N20ASK Is Used
Machine Tool Lubrication
Feed a 3/4in header on a CNC lathe or milling machine, where the automatic drain and 225 cc oil bowl keep the way lubrication and spindle air running without frequent attention.
Assembly Line Air Prep
Condition air for a multi-station assembly conveyor with several actuators and valves, using the 108 cc condensate bowl to handle moisture from a long distribution run.
Packaging Line Pneumatics
Supply a carton erector or case packer with filtered, regulated, and lubricated air, where the 7000 L/min envelope at 0.7 MPa inlet supports a bank of cylinders cycling continuously.
Is the Airtac GAFC Air Service Unit GAFC500N20ASK the Right Air-Prep Unit?
Choose the GAFC500N20ASK for a 3/4in line where a 1910 g unit can be panel or frame mounted. The nylon bowl is a material choice, not a performance upgrade; the common specification of 1.0 MPa max and -5 to 70 C applies, so confirm nylon suits your surroundings. The automatic drain suits unattended operation, and the 40 um element is the standard grade. The PT thread sets the gauge scale to MPa/psi, and the K code adds the reverse-flow valve. The filter and regulator are one body, so the two orderable spares are GAFR500-20 and GAL500-20. With a 1.0 MPa max supply, there is only about 0.1 MPa of headroom above the 0.9 MPa top of the regulated range, so plan the supply pressure accordingly.
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 GAFC500N20ASK FAQ
The working pressure range is 0.15-0.9 MPa (20-130 psi), with a max pressure of 1.0 MPa (145 psi) and a proof pressure of 1.5 MPa (215 psi). It operates from -5 to 70 C and requires ISO VG 32 lubricant. The drain bowl holds 108 cc and the oil bowl 225 cc, with a total weight of 1910 g.
The K code specifies that a reverse-flow (reflux) valve is fitted. The catalogue shows this as a separate pneumatic symbol. The unit also has an automatic drain, a nylon bowl, and a circular gauge reading in MPa and psi.
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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