Airtac GAR Air Regulator GAR50020SJ
The AirTAC Airtac GAR Air Regulator GAR50020SJ is a genuine compressed-air pressure regulator. It sets and holds a steady downstream pressure across the 0.05 - 0.9 MPa range, with 3/4" ports and a built-in circular pressure gauge. It regulates pressure only — it does not filter the air or remove water.
- TypeAir regulator
- Port size3/4"
- Pressure range0.05 - 0.9 MPa
- RegulationStandard
- GaugeCircular
- Reflux valveNo
- Max pressure1.0 MPa
- Weight580 g
About the Airtac GAR Air Regulator GAR50020SJ
The GAR50020SJ is an air pressure regulator that takes a higher, varying supply and holds a steady, lower downstream pressure you set with the knob and read on the fitted circular gauge. It does not filter, clean, or dry the air, and it has no drain bowl or filter element.
This 3/4in unit weighs 580 g and regulates the standard 0.05-0.9 MPa (7-130 psi) band. Its pressed-in self-locking knob keeps the setpoint from drifting when the machine vibrates, so a calibrated pressure stays put between shifts.
Airtac GAR Air Regulator GAR50020SJ Technical Specifications
| Model | Airtac GAR Air Regulator GAR50020SJ |
|---|---|
| Series | GAR500 air regulator |
| Port size | 3/4" (PT thread) |
| Regulation type | Standard |
| Pressure range | 0.05 - 0.9 MPa (7 - 130 psi) |
| Pressure gauge | Circular, MPa / psi scale |
| Bracket | Not included (J) |
| Reflux valve | None |
| Fluid | Air |
|---|---|
| Max. pressure | 1.0 MPa (145 psi) |
| Proof pressure | 1.5 MPa (215 psi) |
| Temperature range | -20 to +70 °C |
| Adjustment | Self-locking press-in knob |
| Mounting | Panel + optional bracket |
| Weight | 580 g |
Specifications follow the official AirTAC GAR catalogue (pages 228-229). This is a regulator only — it sets and holds a downstream pressure but does not filter the air or separate water. To clean the air as well, use the matching GAFR500 filter-regulator or add a GAF filter upstream. Never run above the 1.5 MPa (215 psi) proof pressure.
Model Code: Airtac GAR Air Regulator GAR50020SJ
| GAR500 | GA500 series air regulator — sets the port range and weight class. |
|---|---|
| 20 | Port size 3/4". This body offers 20 = 3/4". |
| S | Standard regulation: 0.05 - 0.9 MPa (7 - 130 psi). This body offers S (standard) or L (lower pressure). |
| J | No bracket (J) — panel mount or existing bracket. |
| (blank) | Circular pressure gauge fitted. |
| (blank) | PT thread; gauge scale MPa / psi. |
| (blank) | No reverse-flow (reflux) valve. |
A GAR regulates pressure but does not filter — there is no bowl, element or drain code. Need to clean the air too? The matching GAFR500-20 is the same regulator with a built-in filter.
Size Class
- GAR2001/8"-1/4" · 170 g
- GAR3001/4"-1/2" · 300 g
- GAR4003/8"-1/2" · 570 g
- GAR5003/4" · 580 g
- GAR6003/4"-1" · 1390 g
All bodies share the same 0.05-0.9 MPa (S) regulated range, 1.0 MPa max and 1.5 MPa proof; the body number sets the port size and the flow the regulator can pass. Bigger ports feed higher air demand. The catalogue plots a flow curve at 0.7 MPa inlet but prints no numeric envelope, so size by port and weight and confirm the curve for a real duty point.
| This model | GAR500 · 3/4" · 580 g |
|---|---|
| One size down | GAR400 |
| One size up | GAR600 |
| Add filtration | GAFR500-20 (filter + regulator) |
Where the Airtac GAR Air Regulator GAR50020SJ Is Used
Machine header pressure
Set a steady 0.4 MPa for a multi-station assembly machine's pneumatic header, smoothing out supply swings from other equipment on the same line.
Calibrated test fixture
Hold a precise 0.3 MPa for a leak-test fixture where the operator reads the circular gauge to confirm the setpoint before each cycle.
Conveyor tension control
Regulate air to a belt-tensioning cylinder on a packaging conveyor, keeping the force consistent as the main compressor cycles.
Is the Airtac GAR Air Regulator GAR50020SJ the Right Regulator?
Choose the GAR500 body when a 3/4in port feeds a higher air demand than a GAR400 (570 g, 3/8in or 1/2in) can handle; the 580 g mass tells you it needs a proper panel or bracket mount, not support from the tubing. This model is type S, covering 0.05-0.9 MPa (7-130 psi); the lower L type only reaches 0.05-0.4 MPa and cannot hit a 0.5-0.6 MPa setpoint. The circular gauge is fitted and reads MPa/psi on its PT thread; the J code means no mounting bracket is included, so plan for a panel mount or your own bracket. If the line also needs clean air, use a matching GAFR filter-regulator or a GAF filter upstream, since this regulator alone does not clean the air. The S type's adjustable band is about 2.4x the L type's span (0.85 MPa vs 0.35 MPa), giving you far more setpoint flexibility.
Quick checklist
- ✓ Body size for your air demand (3/4" here)
- ✓ Type S (0.05-0.9) or L (0.05-0.4 MPa)
- ✓ Gauge fitted, or no gauge (N)
- ✓ Thread PT / G / NPT (sets gauge scale)
- ✓ Bracket kept or removed (J)
- ✓ Need filtration too? Use GAFR500
Installation & Setting Notes
- check Install with the airflow arrow: IN to OUT, knob accessible.
- check Put a filter (GAF or a GAFR) UPSTREAM — a regulator does not clean the air.
- check Set pressure by turning the knob up to the target, then press it in to lock.
- check Keep supply at or below the 1.0 MPa (145 psi) max working pressure.
- check Never exceed the 1.5 MPa (215 psi) proof pressure.
- check Support the 580 g unit on its panel or bracket, not on the tubing.
This is a regulator only — it sets and holds pressure but does not filter or lubricate. Add a GAF filter, a GAL lubricator, or step up to the GAFR500-20 filter-regulator as your air-prep needs grow.
Airtac GAR Air Regulator GAR50020SJ FAQ
The GAR50020SJ regulates air from 0.05-0.9 MPa (7-130 psi), handles a max supply of 1.0 MPa (145 psi), and has a proof pressure of 1.5 MPa (215 psi). It operates from -20 to 70 C and weighs 580 g with a 3/4in PT port.
The J means no mounting bracket is included with this regulator. You would use a panel mount or supply your own bracket, whereas a model without J would come with the standard bracket attached.
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