Airtac GAFR Adjustable Filter Regulator GAFR500N20SJ
The AirTAC Airtac GAFR Adjustable Filter Regulator GAFR500N20SJ 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
- Drainsemi-auto + manual
- Pressure gaugeCircular, MPa / psi
- 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 GAFR500N20SJ
The GAFR500N20SJ is a filter & regulator with both functions sharing one body, so it replaces a separate filter plus regulator with fewer joints to seal. It handles a 3/4in port and weighs 950 g, which signals a unit that needs a proper panel or frame mount rather than support from the tubing.
This model regulates from 0.15 to 0.9 MPa (20-130 psi) and filters to 40 um. The nylon bowl collects condensate in its 108 cc drain bowl, and the circular gauge with MPa/psi scale is fitted. The diversion structure spins incoming air to separate liquid water and solid particles before regulation.
Airtac GAFR Adjustable Filter Regulator GAFR500N20SJ Technical Specifications
| Model | Airtac GAFR Adjustable Filter Regulator GAFR500N20SJ |
|---|---|
| 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 | 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 GAFR500N20SJ
| 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". |
| (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 GAFR500N20SJ Is Used
Machine header supply
Feed a 3/4in header serving multiple pneumatic actuators on a production machine, where the 108 cc bowl and 950 g body suit a fixed frame mount.
Multi-station assembly line
Regulate air for a multi-station assembly line with several valves and cylinders, using the 40 um element to protect downstream components.
Panel-mounted process skid
Mount this unit on a process skid panel where the no-bracket J code fits existing holes, and the gauge lets operators verify set pressure locally.
Is the Airtac GAFR Adjustable Filter Regulator GAFR500N20SJ the Right Air-Prep Unit?
Choose the body and port by flow demand: GAFR500's curve is plotted to 8000 L/min at 0.7 MPa inlet, while the smaller GAFR400 plots to 7000 L/min at the same inlet pressure. This model has a nylon bowl, which is a build choice with the same 1.0 MPa max and -5 to 70 C rating as PC or metal; confirm compatibility for aggressive surroundings. The semi-auto plus manual drain is fitted, so you get both a self-draining option and a manual override. The standard pressure type covers 0.15-0.9 MPa, and the 40 um element suits general shop air. No bracket is included with the J code, so plan for panel mounting or an existing bracket. The gauge is fitted and reads MPa/psi with PT threads. If oil is needed downstream, order the matching GAFC500-20 combination instead. Note that 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 GAFR500N20SJ FAQ
The GAFR500N20SJ is a filter & regulator with a 3/4in port, working pressure range 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, 40 um element, 108 cc drain bowl, and 950 g weight. The gauge is fitted with MPa/psi scale.
The J code means no bracket is included. This suits installations where the unit mounts to an existing panel or frame using its own holes, rather than needing the standard bracket. You can still add a bracket later if the mounting situation changes.
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1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
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Most inquiries answered within 7-8 hours.
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