Airtac GAR Air Regulator GAR40015LJ
The AirTAC Airtac GAR Air Regulator GAR40015LJ 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 built-in circular pressure 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
- GaugeCircular
- Reflux valveNo
- Max pressure1.0 MPa
- Weight570 g
About the Airtac GAR Air Regulator GAR40015LJ
The AirTAC GAR40015LJ 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 circular gauge. It does not filter or clean the air; it only regulates pressure. This model has a 1/2" port and weighs 570 g, placing it in the mid-size GAR400 class for branch lines and individual stations.
Its lower-pressure (L) type regulates from 0.05-0.4 MPa (7-58 psi), with a finer resolution over that low band than the standard S type. The pressed-in self-locking knob prevents the setpoint from drifting when the machine vibrates, so a calibrated low-pressure setting stays put during a shift.
Airtac GAR Air Regulator GAR40015LJ Technical Specifications
| Model | Airtac GAR Air Regulator GAR40015LJ |
|---|---|
| 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 | Circular, MPa / psi scale |
| 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 GAR40015LJ
| 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. |
| (blank) | Circular pressure gauge fitted. |
| (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 GAR40015LJ Is Used
Low-pressure air sensing
Set a stable 0.1-0.2 MPa supply for a back-pressure sensor or a proximity detector on a parts-present station. The fine low-range adjustment holds the sensing threshold without hunting.
Delicate actuator control
Feed a soft-touch clamp or a light press at 0.15-0.3 MPa so the force stays gentle on fragile components. The self-locking knob keeps the setting fixed through repeated cycles.
Bench test rig
Use it on a test bench to supply a precise low pressure to a gauge or a calibrated leak tester. The 1/2" port feeds the rig without restricting the air demand.
Is the Airtac GAR Air Regulator GAR40015LJ the Right Regulator?
Choose the GAR400 body when your line needs a 1/2" port and the 570 g mass suits a panel or bracket mount; the GAR300 above it is 300 g with up to 1/2" ports, while the GAR500 below it is 580 g with a 3/4" port. The L type here regulates only 0.05-0.4 MPa, so it is the right part for low-pressure work like air sensing or delicate actuation, but it cannot reach a 0.5-0.6 MPa setpoint at all. The circular gauge is fitted and reads MPa/psi (PT thread), and the J code means no mounting bracket is included, so plan for a panel mount or an existing bracket. If the line also needs clean air, use a GAFR400-15 filter-regulator or a separate GAF filter upstream, since this unit does not filter. The L type's adjustable band of 0.35 MPa is only about 2.4x narrower than the S type's 0.85 MPa span, so the low-range resolution comes at the cost of reach.
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 GAR40015LJ FAQ
It is a regulator-only unit with a 1/2" port and a weight of 570 g. The regulated range is 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 the temperature range is -20 to 70 C. It has a circular gauge fitted, no mounting bracket, and PT threads.
The L type regulates only 0.05-0.4 MPa (7-58 psi) instead of the standard 0.05-0.9 MPa (7-130 psi), giving finer resolution over that low band. It is meant for low-pressure applications like air sensing or delicate actuation, but it cannot reach a 0.5-0.6 MPa setpoint at all, so it is the wrong part for a standard machine running at higher pressures.
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