Airtac GAFC Air Service Unit GAFC50020SNWK
The AirTAC Airtac GAFC Air Service Unit GAFC50020SNWK 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 materialPC
- Drainsemi-auto + manual
- 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 GAFC50020SNWK
This GAFC50020SNWK is a two-piece F.R.L. combination built for a 3/4in air line. The first body houses both the filter and the regulator, so solids and moisture are removed and pressure is set before the air moves on. The second body is the lubricator, which adds a controlled oil mist as the final step, keeping the oil away from the regulator seat.
The working range is 0.15-0.9 MPa (20-130 psi) with a 5 um element for finer filtration. The PC bowl holds 108 cc of condensate, while the oil bowl holds 225 cc. At 1910 g, this unit is a substantial piece of equipment that needs a proper panel or frame mount, not support from the tubing.
Airtac GAFC Air Service Unit GAFC50020SNWK Technical Specifications
| Model | Airtac GAFC Air Service Unit GAFC50020SNWK |
|---|---|
| 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 | PC |
| Drain type | Semi-auto drain + manual 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 GAFC50020SNWK
| 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". |
| (blank) | Drain: Semi-auto drain + manual 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 GAFC50020SNWK Is Used
Machine Tool Header
Feed a 3/4in header on a CNC machining center, supplying filtered and regulated air to the spindle air curtain and work-holding clamps while the lubricator oils the tool changer mechanism.
Assembly Line Feed
Supply a multi-station assembly conveyor where each station has its own valve manifold. The 5 um element protects sensitive solenoid pilot valves from fine particulate wear.
Packaging Line Actuators
Run a bank of rodless actuators on a high-speed packaging line. The 7000 L/min envelope at 0.7 MPa inlet supports the intermittent high flow of multiple cylinders cycling in sequence.
Is the Airtac GAFC Air Service Unit GAFC50020SNWK the Right Air-Prep Unit?
The GAFC500 body is the second-largest in the range, with a 3/4in port and a flow curve plotted to 7000 L/min at 0.7 MPa inlet. It sits above the GAFC400 (1/2in port, 6000 L/min envelope) and below the GAFC600 (1in port, 12000 L/min envelope), making it a strong choice for a main machine header feeding several stations. The PC bowl is the standard build, and the semi-auto drain dumps condensate each time pressure drops, with a manual drain for on-demand use. The 5 um element traps finer particles than the standard 40 um, which suits precision valves but means more frequent element service. No gauge is fitted, so the set pressure cannot be read without adding one to the 1/4in gauge connection. The reverse-flow (reflux) valve is fitted, and the PT thread is the default with a gauge scale in MPa/psi. The filter-regulator and lubricator are orderable separately as 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 carefully if you need the full output.
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 GAFC50020SNWK FAQ
The standard pressure range is 0.15-0.9 MPa (20-130 psi), with a maximum supply of 1.0 MPa (145 psi) and a proof pressure of 1.5 MPa (215 psi). It operates from -5 to 70 C and must not freeze. The drain bowl holds 108 cc and the oil bowl holds 225 cc. The recommended lubricant is ISO VG 32 or equivalent. The complete unit weighs 1910 g.
The N in the code after the port means no gauge is supplied. The set pressure cannot be read directly on the unit without adding one. The gauge connection on the GAFC500 body is 1/4in, so a standard 1/4in gauge can be fitted if you need to monitor the regulated pressure.
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