Airtac GAFR Adjustable Filter Regulator GAFR500C20SJ
The AirTAC Airtac GAFR Adjustable Filter Regulator GAFR500C20SJ 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 gaugeCircular, MPa / psi
- Weight950 g
About the Airtac GAFR Adjustable Filter Regulator GAFR500C20SJ
This AirTAC GAFR500C20SJ combines a filter and a pressure regulator into a single 3/4in body, removing the need for two separate components on your rail. The diversion structure spins incoming air to separate liquid water and trap solid particles, while the balanced regulator holds your set outlet pressure steady as supply varies. Working range is 0.15-0.9 MPa (20-130 psi) with a 40 um element.
The metal bowl holds 108 cc of condensate and the unit weighs 950 g, placing it in the mid-large size class for machine headers. The pressed-in self-locking knob resists drift from vibration, keeping your setting stable during operation. This model ships without a mounting bracket and with a circular gauge fitted, reading MPa/psi.
Airtac GAFR Adjustable Filter Regulator GAFR500C20SJ Technical Specifications
| Model | Airtac GAFR Adjustable Filter Regulator GAFR500C20SJ |
|---|---|
| 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 | Not included (J) |
| Weight | 950 g |
Specifications follow the official AirTAC GAFR catalogue (pages 235-236). Air must not freeze in the unit. The fitted circular gauge reads in MPa / psi, set by the PT thread code. This unit filters and regulates only; it does not add lubrication.
Model Code: Airtac GAFR Adjustable Filter Regulator GAFR500C20SJ
| 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). |
| J | No bracket (J) — supplied without the mounting bracket. |
| (blank) | Circular pressure gauge fitted. |
| (blank) | Filtering grade 40 µm. |
| (blank) | PT thread; gauge scale MPa / psi. |
| (blank) | No reverse-flow valve. |
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 GAFR500C20SJ Is Used
Machine header supply
Feed a multi-station assembly machine with 3/4in piping, using the 108 cc bowl to collect condensate from a busy production line before it reaches valves.
Paint booth air prep
Set a steady 0.4 MPa for spray equipment while the filter removes water droplets and particles that could ruin a finish, with the metal bowl resisting rough shop conditions.
Conveyor system pressure
Regulate air for a long conveyor line with multiple actuators, relying on the 8000 L/min plotted envelope at 0.7 MPa inlet to size for parallel cylinder operation.
Is the Airtac GAFR Adjustable Filter Regulator GAFR500C20SJ the Right Air-Prep Unit?
Choose this GAFR500 when your line needs 3/4in ports and a 108 cc metal bowl that handles more condensate than the 60 cc bowl on a GAFR300. The metal bowl suits demanding environments, though the common 1.0 MPa max and -5 to 70 C rating apply to all bowl materials. This model has the semi-auto drain plus a manual drain for scheduled emptying, and the 40 um element covers general shop air. The J code means no bracket is included, so plan for panel mounting or an existing frame. The fitted gauge reads MPa/psi with PT threads, and the standard S type covers 0.15-0.9 MPa. If your line needs oil 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 GAFR500C20SJ FAQ
Working pressure is 0.15-0.9 MPa (20-130 psi) with a 1.0 MPa (145 psi) maximum and 1.5 MPa (215 psi) proof pressure. Temperature range is -5 to 70 C. The metal drain bowl holds 108 cc and the unit weighs 950 g with a 3/4in port.
The J code omits the bracket for installations that use panel mounting or existing frames. The 950 g weight needs proper support from the structure, not from the tubing, so confirm your mounting method before installation.
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 GAFR500C20SJ
Send us the quantity, thread type (PT / G / NPT) and destination. We confirm price, stock and lead time — usually within 7-8 hours.