Airtac GAFR Adjustable Filter Regulator GAFR50020S
The AirTAC Airtac GAFR Adjustable Filter Regulator GAFR50020S 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 materialPC
- Drainsemi-auto + manual
- Pressure gaugeCircular, MPa / psi
- Weight950 g
About the Airtac GAFR Adjustable Filter Regulator GAFR50020S
The GAFR50020S is a genuine AirTAC filter and regulator combined into a single body, saving rail space and reducing potential leak points compared to separate units. It handles a 3/4in port with a 40 um element, and its circular gauge with magnifier shows the outlet pressure on an MPa/psi scale.
This standard-pressure model regulates from 0.15 to 0.9 MPa (20-130 psi) and includes both semi-auto and manual drains for flexible condensate removal. The 108 cc bowl collects water and solids separated by the internal diversion structure, while the pressed-in self-locking knob resists vibration-induced drift to help maintain your set pressure.
Airtac GAFR Adjustable Filter Regulator GAFR50020S Technical Specifications
| Model | Airtac GAFR Adjustable Filter Regulator GAFR50020S |
|---|---|
| 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 | PC |
| 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. 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 GAFR50020S
| GAFR500 | GA500 series filter & regulator — sets the port range, drain-bowl capacity and weight. |
|---|---|
| (blank) | Bowl material: PC. 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. |
| (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 GAFR50020S Is Used
Machine header supply
Feed a 3/4in header serving multiple pneumatic actuators on a production machine, where the 8000 L/min plotted flow envelope at 0.7 MPa inlet provides ample capacity for simultaneous operation.
Conveyor line regulation
Stabilize air pressure for a long conveyor system with several air cylinders, using the balanced regulator to hold the setpoint as upstream supply fluctuates during peak demand.
Panel-mounted installation
Mount this 950 g filter-regulator on a machine frame or panel using the included bracket, ensuring the 3/4in piping is supported independently of the unit body.
Is the Airtac GAFR Adjustable Filter Regulator GAFR50020S the Right Air-Prep Unit?
Choose the GAFR500 for 3/4in lines where a 950 g unit with a 108 cc drain bowl suits the service interval; step up to the GAFR600 for 1in ports and a 205 cc bowl, or down to the GAFR400 for 1/2in lines. The PC bowl is standard, with metal or nylon available as C or N options, and the included mounting bracket supports the weight properly. This model has the standard S pressure range, a 40 um element, and PT threads with an MPa/psi gauge scale; select A for an automatic drain, J to omit the bracket, N for no gauge, W for a 5 um element, or K for a reverse-flow valve. If you need lubrication downstream, order the matching GAFC500-20 combination instead of this unit. A 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 GAFR50020S FAQ
The GAFR50020S is a filter & regulator with a 3/4in port, working pressure range of 0.15-0.9 MPa (20-130 psi), max pressure of 1.0 MPa (145 psi), and proof pressure of 1.5 MPa (215 psi). It operates from -5 to 70 C, has a 108 cc drain bowl, weighs 950 g, and uses a 40 um element.
The GAFR50020S combines both functions in one body: it filters the air and regulates the outlet pressure. A GAF filter only removes contaminants, and a GAR regulator only controls pressure. This integrated unit saves space and reduces potential leak points compared to installing two separate components.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models usually ship in 3-4 days.
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Most inquiries answered within 7-8 hours.
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