Airtac GAFR Adjustable Filter Regulator GAFR500C20ASNK
The AirTAC Airtac GAFR Adjustable Filter Regulator GAFR500C20ASNK 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
- Drainautomatic
- Pressure gaugeNot fitted
- Weight950 g
About the Airtac GAFR Adjustable Filter Regulator GAFR500C20ASNK
The GAFR500C20ASNK is a filter and regulator combined into one 950 g body, so a 3/4in line gets both water/solid removal and steady pressure control without separate components. This metal-bowl unit uses a 40 um element and an automatic drain, with a working range of 0.15-0.9 MPa (20-130 psi).
The diversion structure spins incoming air to drop liquid water and solid particles into the 108 cc condensate bowl, while the balanced regulator holds the outlet steady as supply pressure varies. The pressed-in self-locking knob resists drift from vibration, and the included mounting bracket suits the 950 g mass for panel or frame installation.
Airtac GAFR Adjustable Filter Regulator GAFR500C20ASNK Technical Specifications
| Model | Airtac GAFR Adjustable Filter Regulator GAFR500C20ASNK |
|---|---|
| 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 | 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 GAFR500C20ASNK
| 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". |
| 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 GAFR500C20ASNK Is Used
Machine header supply
Feed a multi-station machine header with filtered, regulated air at 3/4in port size, where the 108 cc bowl and automatic drain reduce maintenance stops.
Conveyor line pressure
Stabilize pressure for conveyor drive units and stops, with the self-locking knob holding the setpoint despite line vibration.
Process skid installation
Mount on a process skid frame using the included bracket, providing clean air to valves and actuators with the 40 um element.
Is the Airtac GAFR Adjustable Filter Regulator GAFR500C20ASNK the Right Air-Prep Unit?
Choose the GAFR500 body for 3/4in ports where the flow curve is plotted to 8000 L/min at 0.7 MPa inlet, stepping up from the GAFR400's 7000 L/min envelope. The metal bowl (C) suits demanding environments, while the automatic drain (A) handles unattended or wet lines without manual intervention. This model includes the mounting bracket, omits the gauge (N) - the 1/4in gauge connection remains available - and uses a 40 um element with PT threads. The reverse-flow (reflux) valve (K) is fitted as an ordering difference. For 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 GAFR500C20ASNK FAQ
The GAFR500C20ASNK is a filter & regulator with a 3/4in port, working pressure 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, automatic drain, metal bowl, no gauge, and a reverse-flow valve.
The N code after the port means no gauge is supplied with this unit. The gauge connection on the GAFR500 body is 1/4in, so you can add a compatible 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.
Related AirTAC Air-Preparation Units
Request a Quote for Airtac GAFR Adjustable Filter Regulator GAFR500C20ASNK
Send us the quantity, thread type (PT / G / NPT) and destination. We confirm price, stock and lead time — usually within 7-8 hours.