Airtac GAFR Adjustable Filter Regulator GAFR500N20ASNK
The AirTAC Airtac GAFR Adjustable Filter Regulator GAFR500N20ASNK 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 materialNylon
- Drainautomatic
- Pressure gaugeNot fitted
- Weight950 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 GAFR Adjustable Filter Regulator GAFR500N20ASNK
The GAFR500N20ASNK is a filter and regulator combined into a single body, eliminating the need for separate GAF and GAR units. This 3/4in version handles supply pressures up to 1.0 MPa (145 psi) and regulates output from 0.15 to 0.9 MPa (20-130 psi), with a 40 um element trapping solid particles.
Its nylon bowl collects condensate from the diversion-style filtration, which spins air to separate liquid water and solids. Weighing 950 g, this unit requires proper panel or frame mounting rather than support from tubing alone, and its automatic drain clears the 108 cc bowl without manual intervention.
Airtac GAFR Adjustable Filter Regulator GAFR500N20ASNK Technical Specifications
| Model | Airtac GAFR Adjustable Filter Regulator GAFR500N20ASNK |
|---|---|
| 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 | 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 |
| 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 GAFR500N20ASNK
| GAFR500 | GA500 series filter & regulator — sets the port range, drain-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). |
| (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 GAFR500N20ASNK Is Used
Machine header supply
Feed a multi-station assembly machine header where several actuators share one filtered, regulated air source. The 3/4in port and 108 cc bowl support continuous operation with automatic draining.
CNC coolant system
Protect precision valves in a CNC machine's pneumatic control circuit. The 40 um element removes particulates that could clog fine orifices, while the regulator maintains steady pressure for consistent clamping force.
Test bench air supply
Provide clean, regulated air to a laboratory test bench with multiple pneumatic fixtures. The 950 g unit mounts securely to a frame, and the 8000 L/min envelope at 0.7 MPa inlet supports high-demand testing cycles.
Is the Airtac GAFR Adjustable Filter Regulator GAFR500N20ASNK the Right Air-Prep Unit?
Choose the GAFR500 body when you need 3/4in ports and a flow envelope plotted to 8000 L/min at 0.7 MPa inlet. The nylon bowl suits applications where a transparent PC bowl might be undesirable, though all bowl materials share the same 1.0 MPa maximum pressure rating. This model includes the mounting bracket and uses a standard PT thread with MPa/psi gauge scale, but ships without a gauge - the 1/4in gauge connection is ready for adding one later. The automatic drain handles wet or unattended lines, while the 40 um element provides general-purpose filtration. The fitted reverse-flow (reflux) valve is an ordering difference only. If your line needs lubrication downstream, order the matching GAFC500-20 combination instead. The 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 GAFR500N20ASNK FAQ
Working pressure range is 0.15-0.9 MPa (20-130 psi), with maximum pressure 1.0 MPa (145 psi) and proof pressure 1.5 MPa (215 psi). Temperature range is -5 to 70 C. The drain bowl holds 108 cc and the unit weighs 950 g. It uses a 40 um element and has a 3/4in port with PT thread.
The nylon bowl is a build choice for environments where a transparent PC bowl may not be preferred. All three bowl materials - PC, nylon, and metal - share the same pressure and temperature ratings. Confirm compatibility with your specific operating environment before selecting.
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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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