Airtac GAR Air Regulator GAR50020SJN
The AirTAC Airtac GAR Air Regulator GAR50020SJN 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 no-gauge (N) port for a panel 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
- GaugeNone (N)
- Reflux valveNo
- Max pressure1.0 MPa
- Weight580 g
About the Airtac GAR Air Regulator GAR50020SJN
The GAR50020SJN is an air pressure regulator that takes a variable supply and holds a steady, lower downstream pressure you set with the knob. It is a regulator only - it does not filter the air, remove water, or separate particles, and it has no drain bowl or filter element. This unit uses a 3/4in port and weighs 580 g, placing it in the mid-large size class for machine-level pressure control.
This standard (S) type regulates from 0.05-0.9 MPa (7-130 psi) with a maximum supply of 1.0 MPa (145 psi) and proof pressure of 1.5 MPa (215 psi). The pressed-in self-locking knob prevents the set pressure from drifting due to vibration or accidental contact, so a calibrated setting stays put during a production run. With no gauge fitted, you read the pressure on the line's own panel gauge instead.
Airtac GAR Air Regulator GAR50020SJN Technical Specifications
| Model | Airtac GAR Air Regulator GAR50020SJN |
|---|---|
| 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 | None (N) — MPa / psi port |
| 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 GAR50020SJN
| 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. |
| N | No gauge (N) — for a line with a panel gauge already. |
| (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 GAR50020SJN Is Used
Machine tool pressure set
Set a stable 0.4 MPa for a CNC clamp circuit on a machining center, where the 3/4in port feeds multiple actuators and the self-locking knob holds the setting through vibration.
Assembly line air manifold
Regulate a 0.6 MPa header for a multi-station assembly line, supplying consistent pressure to pneumatic screwdrivers and pick-and-place units downstream.
Conveyor tension control
Maintain a steady 0.3 MPa for conveyor belt tensioning cylinders, using the 580 g body with panel mounting to keep the setting stable during continuous operation.
Is the Airtac GAR Air Regulator GAR50020SJN the Right Regulator?
Choose the GAR50020SJN when your line needs 3/4in connections and a standard 0.05-0.9 MPa regulated range. The J code means the mounting bracket is omitted, so plan for panel mounting or an existing bracket; the N code means no gauge is fitted, so rely on your system's panel gauge for readout. The PT thread uses an MPa/psi gauge scale, matching metric-standard installations. If you need a lower pressure band, the L type regulates only 0.05-0.4 MPa but with finer resolution over that low range; however, it cannot reach a 0.5-0.6 MPa setpoint at all. For clean air, pair this with a GAF filter upstream or use the matching GAFR filter-regulator - the GAR itself does not clean the air. The standard S type's adjustable band of 0.85 MPa is about 2.4x the L type's 0.35 MPa span, giving you a wider operating window for varying machine demands.
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 GAR50020SJN FAQ
The GAR50020SJN 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 no gauge and no mounting bracket.
The N code means no pressure gauge is fitted, so you read the downstream pressure on the line's own panel gauge. The J code means the mounting bracket is omitted, so you mount it directly to a panel or use an existing bracket. This saves cost when you already have those components in your system.
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