AirTAC GR400-15 Pressure Regulator (GR40015LC3)
The AirTAC AirTAC GR400-15 Pressure Regulator (GR40015LC3) is a genuine G-series air pressure regulator. It holds a stable downstream pressure over the range 0.05 - 0.4 MPa (7 - 58 psi) with PT1/2" ports, and ships with a pressure gauge. A regulator does not filter the air — put a GF filter upstream, or use a GFR filter regulator, when water and particulate must also be removed.
- TypePressure regulator
- Port sizePT1/2"
- Regulating range0.05 - 0.4 MPa (7 - 58 psi)
- Pressure typeLow-pressure type
- Pressure gaugeFitted
- Reflux valveNot fitted
- ThreadPT
- BracketFixing bracket included
About the AirTAC GR400-15 Pressure Regulator (GR40015LC3)
The GR40015LC3 is an AirTAC G-series air pressure regulator in the low-pressure type (L), with a setting range that tops out at 0.4 MPa. It handles regulation only for compressed air - no filtration, no drain bowl and no lubrication - so it belongs downstream of whatever filter your line already has. This configuration is size 400 with a PT1/2 port, an external round gauge reading in bar (C3), and the mounting bracket included.
This is a genuine AirTAC part in a family offered in sizes 200, 300, 400 and 600 with ports from 1/8" to 1". Maximum working pressure is 1.0 MPa (145 psi), the GR operating temperature is -20 to 70 C, and G (BSPP) or NPT thread versions are catalogue options besides standard PT. Flow is published as curves rather than one rated number, so we will confirm the datasheet figures for this exact code on request.
AirTAC GR400-15 Pressure Regulator (GR40015LC3) Technical Specifications
| Model | AirTAC GR400-15 Pressure Regulator (GR40015LC3) |
|---|---|
| Series | GR400 pressure regulator |
| Port size | PT1/2" (PT thread) |
| Regulating range | 0.05 - 0.4 MPa (7 - 58 psi) |
| Pressure type | Low-pressure type |
| Bracket | Fixing bracket included |
| Fluid | Compressed air |
|---|---|
| Max. working pressure | 1.0 MPa (145 psi) |
| Temperature range | -20 to +70 °C |
| Pressure gauge | Fitted — round, bar scale |
| Reflux valve | Not fitted |
| Mounting | Panel mounting; optional fixing bracket |
Specifications follow the official AirTAC G-series air-preparation data. Note the GR temperature range is -20 to +70 °C, wider than the other G-series units. A regulator has no bowl and no filter element, so there is no filtering grade. Flow curves, weight and outline dimensions are not published in our data set — ask us and we will confirm from the factory datasheet.
Model Code: AirTAC GR400-15 Pressure Regulator (GR40015LC3)
| GR400 | G-series pressure regulator, 400 body — sets the port range. |
|---|---|
| 15 | Port size PT1/2". This body offers 10 = PT3/8", 15 = PT1/2". |
| L | Low-pressure type — 0.05 - 0.4 MPa (7 - 58 psi). Blank is standard, L is the low-pressure type. |
| (blank) | Fixing bracket included. |
| (blank) | Pressure gauge fitted (blank). |
| C | Gauge shape: Round. C is round, F is square. |
| 3 | Gauge scale: bar. 1 is MPa, 2 is psi, 3 is bar. |
| (blank) | PT thread. PT is the default; G is BSPP and T is NPT. |
| (blank) | No reverse-flow valve (the default). |
Field order is size, port, type, bracket, gauge, gauge shape, scale, thread, reflux — a blank position takes the default. Example: GR300-08LNK is a 300 body, PT1/4", low-pressure type, no gauge, with reflux valve.
Size Class
- GR200PT1/8" - PT1/4"
- GR300PT1/4" - PT1/2"
- GR400PT3/8" - PT1/2"
- GR600PT3/4" - PT1"
A larger body carries a larger port and holds set pressure better as flow rises. AirTAC publishes flow only as curves, so size the body from your peak demand with headroom rather than from a single rated figure.
| This model | GR400 · PT1/2" · 0.05 - 0.4 MPa (7 - 58 psi) |
|---|---|
| One size down | GR300 |
| One size up | GR600 |
| Line order | Filter first, then regulator, then lubricator |
Where the AirTAC GR400-15 Pressure Regulator (GR40015LC3) Is Used
Maintenance-shop test and seating rigs
Give maintenance techs a bar-read low-pressure supply for leak testing, gasket seating and low-force proving of actuators before parts go back on the line.
Pilot-pressure supply for process valves
Set pilot air to valve positioners and pneumatic actuator accessories on process skids, where pilot circuits are specified in bar and must stay well under 4 bar.
Conveyor hold-down and gating air
Regulate low-pressure air to hold-down rollers, gates and diverters on conveyor lines so products are controlled without being marked or crushed.
Is the AirTAC GR400-15 Pressure Regulator (GR40015LC3) the Right Regulator?
Choose the LC3 when your crew reads pressure in bar but still wants the low-pressure L type with its 0.4 MPa ceiling - the C3 round gauge shows the setting directly in bar, while C1 reads MPa and C2 psi. Size 400 at PT1/2 suits mid-large machine supplies; step to 200/300 for branches or 600 for the 3/4"-1" mains. The bracket is included in this code; thread is standard PT with G and NPT variants orderable.
Because flow is published as curves and not a single rating, ask us to confirm datasheet sizing against your application before ordering.
Quick checklist
- ✓ Body size for your peak flow (PT1/2" here)
- ✓ Standard 0.9 MPa or low-pressure 0.4 MPa
- ✓ Gauge fitted, or order N without
- ✓ Gauge shape C round / F square
- ✓ Scale MPa (1), psi (2) or bar (3)
- ✓ Reflux valve needed, order K
Installation & Maintenance Notes
- check Install downstream of the filter, following the airflow arrow.
- check Keep inlet pressure at or below 1.0 MPa (145 psi).
- check Set pressure while air is flowing, then lock the knob.
- check Adjust within 0.05 - 0.4 MPa (7 - 58 psi) only.
- check Operating range -20 to +70 °C.
- check Panel-mount or use the fixing bracket; do not hang it on tubing.
Without a reflux valve, air cannot flow back through the regulator — order the K option if reverse flow is required. A regulator does not remove water or particulate; that is the filter's job.
AirTAC GR400-15 Pressure Regulator (GR40015LC3) FAQ
No single rated flow number exists for GR units - AirTAC publishes performance as flow curves. Tell us your inlet pressure and the flow your line needs and we will confirm the GR400 datasheet curve on request before you place the order.
GR40015LC3 and GR40015LC1 are both low-pressure (L) regulators with the external round gauge, but the C3 gauge reads in bar while C1 reads in MPa. The standard GR40015 has a 0.05-0.9 MPa (7-130 psi) range, whereas the L types are limited to 0.4 MPa maximum. All are regulator-only: no filter element, no bowl and no lubricator.
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Send us the quantity, thread type (PT / G / NPT), gauge scale and destination. We confirm price, availability and lead time — usually within 7-8 hours.