Airtac GAR Air Regulator GAR40010LJK
The AirTAC Airtac GAR Air Regulator GAR40010LJK is a genuine compressed-air pressure regulator. It sets and holds a steady downstream pressure across the 0.05 - 0.4 MPa range, with 3/8" ports and a built-in circular pressure gauge. It regulates pressure only — it does not filter the air or remove water.
- TypeAir regulator
- Port size3/8"
- Pressure range0.05 - 0.4 MPa
- RegulationLower pressure
- GaugeCircular
- Reflux valveYes (K)
- Max pressure1.0 MPa
- Weight570 g
About the Airtac GAR Air Regulator GAR40010LJK
The GAR40010LJK 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, remove water, or separate particles, and it has no drain bowl or filter element. This unit carries a 3/8in port and weighs 570 g, placing it in the mid-range GAR400 size class that suits branch lines and individual machine stations.
The pressed-in self-locking mechanism stops the set pressure drifting when the machine vibrates or the knob gets knocked, so a calibrated setting stays put through a shift. The balanced adjustment design also holds the outlet pressure as the supply pressure fluctuates, which keeps downstream performance stable without constant re-adjustment. Rated for -20 to 70 C, this lower-pressure type regulates from 0.05 to 0.4 MPa (7-58 psi) with finer resolution across that low band than a standard unit would offer.
Airtac GAR Air Regulator GAR40010LJK Technical Specifications
| Model | Airtac GAR Air Regulator GAR40010LJK |
|---|---|
| Series | GAR400 air regulator |
| Port size | 3/8" (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 | 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 | 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 GAR40010LJK
| GAR400 | GA400 series air regulator — sets the port range and weight class. |
|---|---|
| 10 | Port size 3/8". 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. |
| 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 GAFR400-10 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 · 3/8" · 570 g |
|---|---|
| One size down | GAR300 |
| One size up | GAR500 |
| Add filtration | GAFR400-10 (filter + regulator) |
Where the Airtac GAR Air Regulator GAR40010LJK Is Used
Low-pressure clamping circuit
Set a delicate clamping pressure for a fixture holding thin-walled parts, where the 0.05-0.4 MPa band gives fine control and the self-locking knob keeps the setting stable through repeated cycles.
Lab air supply for sensitive instruments
Feed a regulated 0.05-0.4 MPa supply to a laboratory pneumatic actuator or a test rig that needs a precise low pressure, with the gauge letting the operator verify the setpoint at a glance.
Paint or coating application
Regulate the air pressure for a low-volume spray gun or coating tool where a consistent low pressure avoids overspray, and the 570 g body mounts securely on a panel near the work area.
Is the Airtac GAR Air Regulator GAR40010LJK the Right Regulator?
Choose the GAR40010LJK when your line needs a regulated pressure in the low band of 0.05-0.4 MPa (7-58 psi) and a 3/8in port. The L type gives finer adjustment over that range but cannot reach a 0.5-0.6 MPa setpoint, so if you need standard shop pressure, pick the S type instead. This model has no bracket (J), so plan for panel mounting or an existing bracket; the circular gauge is fitted and reads MPa/psi on the PT thread. The K code means a reverse-flow (reflux) valve is attached - it is named here but its function is not detailed in our data. If the air also needs cleaning, use a GAFR400-10 or a separate GAF filter upstream, since this regulator does not filter. The standard S type spans about 2.4x this L type's adjustable band (0.85 MPa vs 0.35 MPa).
Quick checklist
- ✓ Body size for your air demand (3/8" 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 GAFR400-10 filter-regulator as your air-prep needs grow.
Airtac GAR Air Regulator GAR40010LJK FAQ
The GAR40010LJK is a lower-pressure air regulator with a 3/8in port and a weight of 570 g. It regulates from 0.05 to 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). The temperature range is -20 to 70 C. It has a circular gauge fitted, no bracket, PT thread, and a reflux valve attached.
The L type is designed for applications that need fine control over a low pressure band of 0.05-0.4 MPa (7-58 psi). It offers finer resolution across that range than a standard S type, which spans 0.05-0.9 MPa. However, the L type cannot reach setpoints above 0.4 MPa, so it is not suitable for standard machine pressures. This model also includes a reflux valve (K), which is named here but not detailed in our data.
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