Airtac GAFR Adjustable Filter Regulator GAFR500C20SNWK
The AirTAC Airtac GAFR Adjustable Filter Regulator GAFR500C20SNWK is a genuine two-in-one filter & regulator — a diversion-type water/particulate filter and a balanced pressure regulator built into ONE body. It has 3/4" ports, a 5 µm filter element and regulates 0.15 - 0.9 MPa (20 - 130 psi). It has no lubricator, so it adds no oil to the airflow.
- TypeFilter & regulator
- Port size3/4"
- Pressure range0.15 - 0.9 MPa (20 - 130 psi)
- Filtering grade5 µm
- Bowl materialMetal
- Drainsemi-auto + manual
- Pressure gaugeNot fitted
- Weight950 g
About the Airtac GAFR Adjustable Filter Regulator GAFR500C20SNWK
The GAFR500C20SNWK is a filter & regulator in a single body, combining a diversion filter and a balanced pressure regulator without any lubricator. It handles a 3/4in port and delivers a standard 0.15-0.9 MPa (20-130 psi) range, with a 5 um element for finer particle removal.
This metal-bowl unit weighs 950 g and is built for a 108 cc condensate bowl, with the mounting bracket included. The pressed-in self-locking knob resists set-pressure drift from vibration, while the diversion structure spins air to separate liquid water and solids into the bowl.
Airtac GAFR Adjustable Filter Regulator GAFR500C20SNWK Technical Specifications
| Model | Airtac GAFR Adjustable Filter Regulator GAFR500C20SNWK |
|---|---|
| Series | GAFR500 filter & regulator |
| Port size | 3/4" (PT thread) |
| Filtering grade | 5 µm |
| Pressure range | 0.15 - 0.9 MPa (20 - 130 psi) |
| Type | Standard |
| Bowl material | Metal |
| 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 |
| Bracket | Included |
| Weight | 950 g |
Specifications follow the official AirTAC GAFR catalogue (pages 235-236). Air must not freeze in the unit. No gauge is supplied with this model — the gauge connection on a GAFR500 is 1/4" if you add one. This unit filters and regulates only; it does not add lubrication.
Model Code: Airtac GAFR Adjustable Filter Regulator GAFR500C20SNWK
| GAFR500 | GA500 series filter & regulator — sets the port range, drain-bowl capacity and weight. |
|---|---|
| C | Bowl material: Metal. 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). |
| (blank) | Mounting bracket included. |
| 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. |
The filter and the regulator are ONE body here — there is no separate GAF filter or GAR regulator part to assemble. Need lubrication downstream too? Add a lubricator by ordering the matching GAFC500-20 F.R.L. combination instead.
Size Class & Flow Envelope
- GAFR2001/8"-1/4" · 2000 L/min
- GAFR3001/4"-1/2" · 3500 L/min
- GAFR4003/8"-1/2" · 7000 L/min
- GAFR5003/4" · 8000 L/min
- GAFR6003/4"-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 | GAFR500 · 3/4" · curve to 8000 L/min |
|---|---|
| One size down | GAFR400 |
| One size up | GAFR600 (curve to 12000 L/min) |
| Add a lubricator | GAFC500-20 (F.R.L. combination) |
Where the Airtac GAFR Adjustable Filter Regulator GAFR500C20SNWK Is Used
Machine tool air prep
Feed a 3/4in header on a CNC machining center, where the 5 um element protects precision spindles and the 108 cc bowl handles condensate from a busy production shift.
Multi-station assembly line
Supply a bank of pneumatic actuators on an automotive assembly line, using the 8000 L/min envelope at 0.7 MPa inlet to size for simultaneous cylinder movements.
Instrument air for test rigs
Provide stable 0.15-0.9 MPa air to a laboratory test bench, where the balanced regulator holds set pressure as supply varies and the metal bowl adds ruggedness.
Is the Airtac GAFR Adjustable Filter Regulator GAFR500C20SNWK the Right Air-Prep Unit?
Choose the GAFR500 for a 3/4in port when you need a 108 cc drain bowl and a flow envelope plotted to 8000 L/min at 0.7 MPa inlet, stepping up from the GAFR400's 7000 L/min envelope for larger lines. The metal bowl suits demanding environments, but confirm compatibility for aggressive surroundings since no chemical data is printed. This model has a semi-auto plus manual drain (both fitted), a 5 um element for finer filtration, and the mounting bracket is included. The no-gauge option means the 1/4in gauge connection is available if you add one later, and the PT thread carries an MPa/psi scale. The reverse-flow (reflux) valve is fitted as an ordering difference. If oil is needed downstream, order the matching GAFC500-20 combination instead. 1.0 MPa max supply leaves about 0.1 MPa above the 0.9 MPa top of the 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
- ✓ Bracket kept or removed (J); add a lubricator = GAFC
Installation & Maintenance Notes
- check Install with the airflow arrow: IN to OUT, gauge/knob accessible.
- check Keep inlet pressure at or below 1.0 MPa (145 psi).
- check Set pressure with the pressed-in self-locking knob; pull to adjust, press to lock.
- check Drain condensate before the 108 cc bowl fills.
- check Keep the unit above freezing (-5 to +70 °C, unfreeze).
- check Support the 950 g unit on its bracket, not on the tubing.
This is a filter and regulator only — it delivers filtered, pressure-set air with no added oil. If a downstream tool needs lubrication, add a separate lubricator or order the GAFC500-20 combination; do not expect an oil mist from this unit.
Airtac GAFR Adjustable Filter Regulator GAFR500C20SNWK FAQ
Working pressure is 0.15-0.9 MPa (20-130 psi), max pressure is 1.0 MPa (145 psi), and proof pressure is 1.5 MPa (215 psi). Temperature range is -5 to 70 C. The drain bowl holds 108 cc and the unit weighs 950 g, with a 3/4in port and 5 um element.
The N code after the port means no gauge is supplied. The gauge connection on GAFR500 is 1/4in, so you can add a compatible gauge later if you need to read the set pressure directly.
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Covers non-human-caused product damage.
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