Airtac GAR Air Regulator GAR50020LJN
The AirTAC Airtac GAR Air Regulator GAR50020LJN is a genuine compressed-air pressure regulator. It sets and holds a steady downstream pressure across the 0.05 - 0.4 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 - 0.4 MPa
- RegulationLower pressure
- GaugeNone (N)
- Reflux valveNo
- Max pressure1.0 MPa
- Weight580 g
About the Airtac GAR Air Regulator GAR50020LJN
The GAR50020LJN is an air pressure regulator that takes a higher, varying supply and holds a steady, lower downstream pressure you set with the knob. It does not filter, clean, or dry the air, and has no drain bowl or filter element. This unit carries a 3/4in port and weighs 580 g, placing it in the mid-large size class for machine-level air lines.
This is the lower-pressure (L) type, regulating from 0.05-0.4 MPa (7-58 psi) with finer resolution across that low band. The pressed-in self-locking knob holds the setpoint against vibration and accidental knocks, while the balanced adjustment mechanism keeps the setting stable as supply pressure varies. No gauge is fitted, so pressure is read on the line's own panel gauge.
Airtac GAR Air Regulator GAR50020LJN Technical Specifications
| Model | Airtac GAR Air Regulator GAR50020LJN |
|---|---|
| Series | GAR500 air regulator |
| Port size | 3/4" (PT thread) |
| Regulation type | Lower pressure |
| Pressure range | 0.05 - 0.4 MPa (7 - 58 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 GAR50020LJN
| GAR500 | GA500 series air regulator — sets the port range and weight class. |
|---|---|
| 20 | Port size 3/4". This body offers 20 = 3/4". |
| L | Lower pressure regulation: 0.05 - 0.4 MPa (7 - 58 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 GAR50020LJN Is Used
Low-pressure clamping circuits
Set a gentle, repeatable clamp force on delicate parts or fixtures where a standard 0.9 MPa regulator would over-stress the workpiece. The fine low-band resolution helps hold a stable pressure.
Spray or mist system supply
Feed a low-pressure spray gun or air knife line that needs a steady 0.2-0.3 MPa supply. The regulator holds the setpoint against upstream swings, keeping the spray pattern consistent.
Bench test rigs
Use it on a test bench to supply a controlled low pressure to sensors, valves, or small actuators. The 3/4in port handles the flow demand of multiple test stations without a pressure drop.
Is the Airtac GAR Air Regulator GAR50020LJN the Right Regulator?
Choose this GAR500 when your line needs a 3/4in port and a lower regulated band. The L type spans only 0.05-0.4 MPa (7-58 psi), so it suits low-pressure applications but cannot reach a standard 0.5-0.6 MPa setpoint. The J code means no mounting bracket is included, so plan for panel mounting or an existing bracket. The N code means no gauge is fitted, so rely on the line's panel gauge for readout. Thread is PT with an MPa/psi gauge scale if you add one later. If the air also needs cleaning, use a GAFR500 filter-regulator or a separate GAF filter upstream. The standard S type's 0.05-0.9 MPa band is about 2.4x this L type's adjustable 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 GAR50020LJN FAQ
The GAR50020LJN is a lower-pressure regulator with a 3/4in port and a weight of 580 g. It regulates from 0.05-0.4 MPa (7-58 psi), with a max supply pressure of 1.0 MPa (145 psi) and a proof pressure of 1.5 MPa (215 psi). Operating temperature range is -20 to 70 C. It has no gauge and no bracket.
The L type regulates only from 0.05-0.4 MPa (7-58 psi), giving finer resolution over that low band. It cannot reach a 0.5-0.6 MPa setpoint, so it is the wrong part for a standard machine. If you need up to 0.9 MPa, choose the S type instead.
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