Airtac GAFC Air Service Unit GAFC50020ALNWK
The AirTAC Airtac GAFC Air Service Unit GAFC50020ALNWK 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 - 0.4 MPa (20 - 58 psi).
- TypeF.R.L. combination
- Port size3/4"
- Pressure range0.15 - 0.4 MPa (20 - 58 psi)
- Filtering grade5 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 GAFC50020ALNWK
This AirTAC GAFC50020ALNWK is a two-piece F.R.L. combination: a filter-regulator body paired with a lubricator, mounted on a T-bracket with quick clamps. It handles a 3/4in port and operates in the lower pressure band of 0.15-0.4 MPa (20-58 psi), with a 5 um element for finer filtration.
The 108 cc condensate bowl and 225 cc oil bowl define the service interval, while the 1910 g mass signals a unit that needs a proper panel or frame mount. The automatic drain clears condensate without an operator, and the reverse-flow valve is fitted. No gauge is supplied; the 1/4in gauge connection is there if you add one later.
Airtac GAFC Air Service Unit GAFC50020ALNWK Technical Specifications
| Model | Airtac GAFC Air Service Unit GAFC50020ALNWK |
|---|---|
| Series | GAFC500 F.R.L. combination |
| Port size | 3/4" (PT thread) |
| Filtering grade | 5 µm |
| Pressure range | 0.15 - 0.4 MPa (20 - 58 psi) |
| Type | Lower pressure |
| 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 GAFC50020ALNWK
| 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. |
| 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. |
| 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 GAFC50020ALNWK Is Used
Precision Tooling
Feed a 3/4in line to a CNC spindle or precision grinder where regulated air at 0.15-0.4 MPa protects sensitive tooling from over-pressure.
Assembly Stations
Supply a multi-station assembly line with filtered, lubricated air at a controlled lower pressure, reducing wear on pneumatic actuators.
Test Rigs
Use in a laboratory test rig where a stable, low-pressure air supply is needed for instrumentation or calibration equipment.
Is the Airtac GAFC Air Service Unit GAFC50020ALNWK the Right Air-Prep Unit?
Choose the GAFC500 for a 3/4in line where the lower pressure range suits delicate tooling. The PC bowl is the standard build; confirm it fits your environment, as the catalogue gives no material-specific ratings. The 5 um element traps finer particles than the standard 40 um, but plan for more frequent element service. The automatic drain is ideal for unattended operation, and the PT thread pairs with an MPa/psi gauge scale if you install one. The reverse-flow valve is fitted per the K code. Spares are orderable as GAFR500-20 and GAL500-20.
With a 1.0 MPa max supply, you have about 0.6 MPa of headroom above this unit's 0.4 MPa top setting, 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 GAFC50020ALNWK FAQ
This F.R.L. combination 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). It has a 5 um element, 108 cc drain bowl, 225 cc oil bowl, and weighs 1910 g. Recommended lubricant is ISO VG 32, and the temperature range is -5 to 70 C.
The 'N' after the port code means no gauge is supplied. The gauge connection is 1/4in, so you can add a gauge later. Without one, you cannot read the set pressure directly on the unit.
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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