Airtac GAFR Adjustable Filter Regulator GAFR500C20SNK
The AirTAC Airtac GAFR Adjustable Filter Regulator GAFR500C20SNK 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 40 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 grade40 µm
- Bowl materialMetal
- Drainsemi-auto + manual
- Pressure gaugeNot fitted
- Weight950 g
About the Airtac GAFR Adjustable Filter Regulator GAFR500C20SNK
The GAFR500C20SNK is a filter & regulator that combines air filtration and pressure regulation in a single body, eliminating the need for separate GAF and GAR units. This 3/4in port model handles flows plotted to 8000 L/min at 0.7 MPa inlet, with a 108 cc metal condensate bowl and a 950 g mass that signals its machine-header class.
It delivers a standard 0.15-0.9 MPa (20-130 psi) regulated output with a 40 um element, and includes both semi-auto and manual drains. The pressed-in self-locking knob resists set-pressure drift from vibration, while the balanced mechanism holds outlet pressure steady as supply varies.
Airtac GAFR Adjustable Filter Regulator GAFR500C20SNK Technical Specifications
| Model | Airtac GAFR Adjustable Filter Regulator GAFR500C20SNK |
|---|---|
| Series | GAFR500 filter & regulator |
| Port size | 3/4" (PT thread) |
| Filtering grade | 40 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 GAFR500C20SNK
| 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. |
| (blank) | Filtering grade 40 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 GAFR500C20SNK Is Used
Machine Header Feed
Supply a 3/4in header that feeds multiple pneumatic actuators on a stamping or assembly machine, where the 8000 L/min envelope at 0.7 MPa inlet supports several simultaneous cycles.
Multi-Station Conveyor Line
Regulate air for a conveyor system with several diverters and stops, using the 108 cc metal bowl to handle condensate from a long, moist supply run.
Panel with Vibration
Mount on a press or forming machine panel where the self-locking knob keeps the 0.15-0.9 MPa setpoint stable despite continuous shock and vibration.
Is the Airtac GAFR Adjustable Filter Regulator GAFR500C20SNK the Right Air-Prep Unit?
Choose the GAFR500 for 3/4in lines feeding multiple stations; its 108 cc drain bowl holds roughly 4.3x the condensate of a GAFR300's 60 cc bowl, meaning fewer drain interventions on a busy line. The metal bowl suits demanding environments, and the included bracket mounts it securely to a frame or panel. This unit ships with a 40 um element, PT threads, and both semi-auto and manual drains; the K code adds the reverse-flow valve as an ordering difference. If oil is needed downstream, order the matching GAFC500-20 combination instead. Remember that 1.0 MPa max supply leaves about 0.1 MPa above the 0.9 MPa top of the range, so plan inlet pressure near the maximum for 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
- ✓ 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 GAFR500C20SNK FAQ
It is a filter & regulator with a 3/4in port, standard pressure range of 0.15-0.9 MPa (20-130 psi), max pressure 1.0 MPa (145 psi), proof pressure 1.5 MPa (215 psi), temperature range -5 to 70 C, 108 cc drain bowl, and 950 g weight. It has a 40 um element, metal bowl, semi-auto and manual drains, PT threads, and no gauge.
The N code after the port means no gauge is supplied. The gauge connection on the GAFR500 body is 1/4in, so you can add a compatible AirTAC gauge later if you need to read the set pressure directly.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
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