Airtac GAR Air Regulator GAR50020SJK
The AirTAC Airtac GAR Air Regulator GAR50020SJK 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 valveYes (K)
- Max pressure1.0 MPa
- Weight580 g
About the Airtac GAR Air Regulator GAR50020SJK
The GAR50020SJK is a regulator-only unit that takes a higher supply pressure and holds a steady, lower downstream pressure you set with the knob and read on the fitted circular gauge. It does not filter, clean, dry, or remove water or particles from the air - it only regulates pressure. This model has a 3/4in port and weighs 580 g, placing it in the mid-large size class for machine-level air distribution.
The pressed-in self-locking knob prevents the set pressure from drifting due to vibration or accidental knocks, so a calibrated setting stays put during production runs. The balanced adjustment mechanism also helps the regulator hold its setpoint as the supply pressure fluctuates. A reverse-flow (reflux) valve is attached to this unit, and the PT thread gives a gauge scale in MPa/psi.
Airtac GAR Air Regulator GAR50020SJK Technical Specifications
| Model | Airtac GAR Air Regulator GAR50020SJK |
|---|---|
| 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 | Attached (K) |
| 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 GAR50020SJK
| 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. |
| K | Reverse-flow (reflux) valve attached (K). |
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 GAR50020SJK Is Used
Machine header pressure
Set a stable 0.6 MPa for a multi-station assembly machine fed by a 3/4in header, protecting downstream valves and actuators from supply swings.
Paint booth air supply
Hold a consistent 0.3 MPa for spray guns in a finishing line, where pressure drift would change atomization and finish quality.
Conveyor system regulation
Regulate air for a bank of conveyor stops and diverters, keeping the force even across multiple stations without a filter element.
Is the Airtac GAR Air Regulator GAR50020SJK the Right Regulator?
Choose the GAR500 body when you need a 3/4in port to feed a machine header or a multi-station line; step down to the GAR400 (570 g) for 1/2in ports or up to the GAR600 (1390 g) for a 1in port. This is the standard S type, regulating 0.05-0.9 MPa (7-130 psi), which suits most industrial actuators; the L type only reaches 0.4 MPa and cannot hit a 0.5-0.6 MPa setpoint. The J code means no mounting bracket is included, so plan for panel mounting or an existing bracket. A circular gauge is fitted with an MPa/psi scale for PT threads, and the K code adds a reflux valve. If the line also needs clean air, use a GAFR500-20 or a separate GAF filter upstream. The S type's 0.85 MPa adjustable band is about 2.4x the L type's 0.35 MPa span.
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 GAR50020SJK FAQ
The GAR50020SJK is a standard-type air pressure regulator with a 3/4in port and a regulated range of 0.05-0.9 MPa (7-130 psi). Maximum supply pressure is 1.0 MPa (145 psi), proof pressure is 1.5 MPa (215 psi), and the temperature range is -20 to 70 C. The unit weighs 580 g and has a circular gauge fitted with an MPa/psi scale.
The K code indicates a reverse-flow (reflux) valve is attached to the GAR50020SJK. This is a factory-fitted option that comes with the unit. The regulator itself does not filter or clean the air; if you need filtration, install a GAFR500-20 or a separate GAF filter upstream.
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