Airtac GAFC Air Service Unit GAFC50020ASNK
The AirTAC Airtac GAFC Air Service Unit GAFC50020ASNK 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 materialPC
- 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 GAFC50020ASNK
This GAFC50020ASNK is a two-piece F.R.L. combination rated for 3/4in lines, with the filter and regulator sharing one body and the lubricator mounted downstream on a T-bracket. It handles 0.15-0.9 MPa (20-130 psi) with a 40 um element, and the automatic drain clears condensate from the 108 cc bowl without operator attention.
The 225 cc oil bowl keeps the lubricator running longer between refills, and the whole unit weighs 1910 g, so it needs a proper panel or frame mount rather than tubing support. A reverse-flow valve is fitted, and since no gauge is supplied, the 1/4in gauge connection is available if you add one later.
Airtac GAFC Air Service Unit GAFC50020ASNK Technical Specifications
| Model | Airtac GAFC Air Service Unit GAFC50020ASNK |
|---|---|
| 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 | PC |
| 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 GAFC50020ASNK
| GAFC500 | GA500 series F.R.L. unit — sets ports, bowl capacity and weight. |
|---|---|
| (blank) | Bowl material: PC. 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). |
| 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 GAFC50020ASNK Is Used
Machine tool coolant systems
Feeds 3/4in headers on CNC machining centers where consistent 0.6 MPa pressure and oil mist keep way lube and spindle air working together.
Multi-station assembly lines
Supplies a bank of pneumatic actuators on automotive assembly conveyors, with the automatic drain handling condensate from humid plant air.
Packaging film tensioning
Regulates air for web tensioning cylinders on film packaging machines, where the 225 cc oil bowl supports long production runs between refills.
Is the Airtac GAFC Air Service Unit GAFC50020ASNK the Right Air-Prep Unit?
Choose the GAFC500 for 3/4in mains where the 7000 L/min flow curve (plotted at 0.7 MPa inlet) provides a sizing envelope for multi-station lines. The PC bowl suits general shop air, while the automatic drain is ideal for unattended operation, and the 40 um element handles standard pneumatic components. The PT thread with MPa/psi scale matches common local fittings, and the reverse-flow valve is included as specified.
Spare parts are the GAFR500-20 filter-regulator and GAL500-20 lubricator, both orderable separately. If the line must stay oil-free, omit the lubricator and choose a plain GAFR instead. With a 1.0 MPa max supply, you have about 0.1 MPa above the 0.9 MPa top of the regulated range, so plan your inlet 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 GAFC50020ASNK FAQ
The working pressure range is 0.15-0.9 MPa (20-130 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, and the recommended lubricant is ISO VG 32. The drain bowl holds 108 cc, the oil bowl holds 225 cc, and the unit weighs 1910 g with a 40 um filter element.
The N in the code means no gauge is supplied, which is common when pressure is set once and monitored elsewhere. If you need to read pressure locally, the GAFC500 body has a 1/4in gauge connection where you can fit a standard AirTAC gauge with an MPa/psi scale.
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Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
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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Most inquiries answered within 7-8 hours.
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