Airtac GAR Air Regulator GAR40015LJN
The AirTAC Airtac GAR Air Regulator GAR40015LJN is a genuine compressed-air pressure regulator. It sets and holds a steady downstream pressure across the 0.05 - 0.4 MPa range, with 1/2" 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 size1/2"
- Pressure range0.05 - 0.4 MPa
- RegulationLower pressure
- GaugeNone (N)
- Reflux valveNo
- Max pressure1.0 MPa
- Weight570 g
About the Airtac GAR Air Regulator GAR40015LJN
The AirTAC GAR40015LJN is a regulator-only unit that takes a higher supply pressure and holds a steady, lower downstream pressure you set with the knob. It does not filter or clean the air, and it has no drain bowl or filter element. This model has a 1/2" port, weighs 570 g, and is the lower-pressure type, regulating from 0.05 to 0.4 MPa (7-58 psi).
Its pressed-in self-locking knob keeps the setpoint from drifting when the machine vibrates, so a calibrated low-pressure setting stays put through a shift. The balanced adjustment mechanism holds the outlet pressure steady as the supply pressure fluctuates, which matters when upstream pressure swings with other equipment cycling.
Airtac GAR Air Regulator GAR40015LJN Technical Specifications
| Model | Airtac GAR Air Regulator GAR40015LJN |
|---|---|
| Series | GAR400 air regulator |
| Port size | 1/2" (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 | 570 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 GAFR400 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 GAR40015LJN
| GAR400 | GA400 series air regulator — sets the port range and weight class. |
|---|---|
| 15 | Port size 1/2". This body offers 10 = 3/8", 15 = 1/2". |
| 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 GAFR400-15 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 | GAR400 · 1/2" · 570 g |
|---|---|
| One size down | GAR300 |
| One size up | GAR500 |
| Add filtration | GAFR400-15 (filter + regulator) |
Where the Airtac GAR Air Regulator GAR40015LJN Is Used
Low-pressure assembly
Set a gentle 0.15 MPa for a parts-present sensor or a light press that must not crush a delicate component. The self-locking knob holds the low setpoint through a full shift.
Lab air supply
Feed a stable 0.2 MPa to a lab fixture or a test jig that needs a repeatable low pressure. The balanced design keeps the outlet steady even if the shop supply fluctuates.
Blow-off station
Regulate a 0.3 MPa blow-off for clearing swarf from a machined part without risking damage. The 1/2" port delivers enough air for a single nozzle or a small manifold.
Is the Airtac GAR Air Regulator GAR40015LJN the Right Regulator?
Choose the GAR400 body when you need a 1/2" port and the 570 g mass suits a mid-size machine or a branch line feeding several actuators. This L-type regulates only 0.05-0.4 MPa (7-58 psi), so it fits low-pressure work like air bearings or delicate blow-off; it cannot reach a 0.5 MPa setpoint, so pick the S type for standard shop pressure. The N means no gauge is fitted, so read pressure on the line's own panel gauge. The J means no bracket is included, so plan a panel mount or use an existing bracket. PT threads read MPa/psi on the gauge scale. If the air also needs cleaning, use a GAFR400 filter-regulator or a separate GAF filter upstream. The L type's adjustable band is 0.35 MPa wide, while the S type spans 0.85 MPa, so the S version gives about 2.4x the regulation range.
Quick checklist
- ✓ Body size for your air demand (1/2" 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 GAFR400
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 570 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 GAFR400-15 filter-regulator as your air-prep needs grow.
Airtac GAR Air Regulator GAR40015LJN FAQ
The GAR40015LJN is a lower-pressure regulator with a 1/2" port and a weight of 570 g. It regulates from 0.05 to 0.4 MPa (7-58 psi). Maximum supply pressure is 1.0 MPa (145 psi), and proof pressure is 1.5 MPa (215 psi). The operating temperature range is -20 to 70 C. It has no gauge and no mounting bracket.
The L type regulates a lower pressure band of 0.05-0.4 MPa (7-58 psi) with finer resolution over that range. The standard S type regulates 0.05-0.9 MPa (7-130 psi). The L type cannot reach a setpoint above 0.4 MPa, so it is only suitable for low-pressure applications, not for standard machine pressure.
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