Airtac GAFC Air Service Unit GAFC500N20ASNWK
The AirTAC Airtac GAFC Air Service Unit GAFC500N20ASNWK 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 - 0.9 MPa (20 - 130 psi).
- TypeF.R.L. combination
- Port size3/4"
- Pressure range0.15 - 0.9 MPa (20 - 130 psi)
- Filtering grade5 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 GAFC500N20ASNWK
This GAFC500 F.R.L. combination pairs a filter-regulator body with a separate lubricator on a shared T-bracket, so the air is cleaned and set to pressure before a metered oil mist is added downstream. The 3/4in port and 1910 g mass put it in the mid-large size class, suited to feeding a machine header or a multi-station line rather than a single small cylinder.
The standard pressure range is 0.15-0.9 MPa (20-130 psi), with a 5 um element fitted to trap fine particles for sensitive valves. The nylon bowl is specified by the N code, and the automatic drain clears condensate without an operator, which suits unattended or wet supply lines. The catalogue flow curve for this body is plotted to 7000 L/min at 0.7 MPa inlet, so use that envelope for relative sizing against a real duty point.
Airtac GAFC Air Service Unit GAFC500N20ASNWK Technical Specifications
| Model | Airtac GAFC Air Service Unit GAFC500N20ASNWK |
|---|---|
| Series | GAFC500 F.R.L. combination |
| Port size | 3/4" (PT thread) |
| Filtering grade | 5 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. 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 GAFC500N20ASNWK
| 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). |
| 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 GAFC500N20ASNWK Is Used
Machine tool coolant systems
Feed a 3/4in header on a CNC lathe or milling center, where the 5 um element protects coolant valves and the automatic drain handles condensate from wet shop air.
Multi-station assembly cells
Supply a bank of pneumatic actuators on an indexing assembly line, using the 225 cc oil bowl to keep lubricator refills infrequent across a full shift.
Conveyor sortation systems
Power diverters and stops on a parcel sorting conveyor, where the 108 cc drain bowl and automatic drain reduce maintenance visits on a line that runs continuously.
Is the Airtac GAFC Air Service Unit GAFC500N20ASNWK the Right Air-Prep Unit?
Choose the GAFC500 when a 3/4in port and a 108 cc condensate bowl plus 225 cc oil bowl match your service interval, and when the 1910 g unit can be bolted to a proper frame rather than supported by tubing. The nylon bowl is a build choice, but the shared specification of 1.0 MPa max and -5 to 70 C does not change with material, so confirm it suits your surroundings. The A code specifies an automatic drain, the W code upgrades the element to 5 um, and the N after the port means no gauge is supplied, so the 1/4in gauge connection is ready for one if you add it later. The K code fits the reverse-flow valve, which the catalogue draws as a separate pneumatic symbol. The two units are orderable separately as the GAFR500-20 filter & regulator and the GAL500-20 lubricator. 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 band, so plan the inlet pressure accordingly if you need the full 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 GAFC500N20ASNWK FAQ
It is an F.R.L. combination with a 3/4in port, working range 0.15-0.9 MPa (20-130 psi), max pressure 1.0 MPa (145 psi), proof pressure 1.5 MPa (215 psi), and temperature range -5 to 70 C. The drain bowl holds 108 cc and the oil bowl 225 cc, the unit weighs 1910 g, and the recommended lubricant is ISO VG 32 or equivalent.
The N after the port code means no gauge is supplied, so you cannot read the set pressure without adding one. The gauge connection on the GAFC500 body is 1/4in, so a standard gauge can be fitted there if you need to monitor the outlet pressure.
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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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Most inquiries answered within 7-8 hours.
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