Airtac GAR Air Regulator GAR50020LK
The AirTAC Airtac GAR Air Regulator GAR50020LK 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 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 - 0.4 MPa
- RegulationLower pressure
- GaugeCircular
- Reflux valveYes (K)
- Max pressure1.0 MPa
- Weight580 g
About the Airtac GAR Air Regulator GAR50020LK
The GAR50020LK is an air pressure regulator that takes a higher supply and holds a steady, lower downstream pressure you set with the knob and read on the circular gauge. It is a regulator only - it does not filter the air or remove water, moisture, oil or particles, and has no drain bowl or filter element. This unit has a 3/4in port and weighs 580 g, placing it in the GAR500 size class for medium-to-large industrial lines.
The pressed-in self-locking knob stops the set pressure drifting from vibration or accidental knocks, so a calibrated setting stays put during a shift. The balanced adjustment mechanism holds the setpoint as supply pressure varies, keeping downstream tools stable. A reverse-flow (reflux) valve is attached to this model. It operates from -20 to 70 C, with a max supply of 1.0 MPa (145 psi) and proof pressure of 1.5 MPa (215 psi).
Airtac GAR Air Regulator GAR50020LK Technical Specifications
| Model | Airtac GAR Air Regulator GAR50020LK |
|---|---|
| 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 | Circular, MPa / psi scale |
| Bracket | Included |
| 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 GAR50020LK
| 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). |
| (blank) | Mounting bracket included. |
| (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 GAR50020LK Is Used
Low-pressure machine circuits
Set a stable 0.05-0.4 MPa supply for a machine station that runs delicate pneumatic controls, where fine adjustment matters more than high force.
Multi-tool low-pressure lines
Feed several low-pressure tools from one 3/4in header, holding a steady setpoint so each tool sees the same pressure despite supply swings.
Test and calibration rigs
Use the fine low-range resolution to set precise test pressures on a bench rig, with the gauge giving a clear readout for verification.
Is the Airtac GAR Air Regulator GAR50020LK the Right Regulator?
Choose the GAR50020LK when you need a lower-pressure regulator for a 3/4in line, setting 0.05-0.4 MPa (7-58 psi) - ideal for low-pressure circuits that need fine resolution. The L type cannot reach a 0.5-0.6 MPa setpoint, so pick the S type if you need the standard 0.05-0.9 MPa band. The mounting bracket is included, and the circular gauge reads MPa/psi on the PT thread. The K option adds a reverse-flow (reflux) valve, named here without function details. If the line also needs clean air, use a GAFR filter-regulator or a separate GAF filter upstream - this GAR does not clean the air. The 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 GAR50020LK FAQ
The GAR50020LK is a lower-pressure air regulator with a 3/4in port, regulating 0.05-0.4 MPa (7-58 psi). Max supply pressure is 1.0 MPa (145 psi), proof pressure is 1.5 MPa (215 psi), and temperature range is -20 to 70 C. It weighs 580 g, has a circular gauge fitted, includes a mounting bracket, and uses PT thread with an MPa/psi scale. A reverse-flow (reflux) valve is attached.
The L type regulates a lower pressure band of 0.05-0.4 MPa (7-58 psi) with finer resolution over that range, compared to the standard S type which regulates 0.05-0.9 MPa (7-130 psi). The L type cannot reach a 0.5-0.6 MPa setpoint, so it is only suitable for low-pressure applications. This model is an L type.
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