AirTAC GR400-15 Pressure Regulator (GR40015LF1)
The AirTAC AirTAC GR400-15 Pressure Regulator (GR40015LF1) 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 (GR40015LF1)
The GR400-15LF1 is an AirTAC G-series air pressure regulator: it controls downstream pressure only, with no filtration and no bowl. This configuration is the size 400 body with a 1/2 in PT port, the low-pressure type whose outlet is adjustable up to 0.4 MPa, and an embedded square gauge reading in MPa. A mounting bracket is included as standard.
This is a genuine AirTAC part from the GR series, which spans sizes 200 to 600 so you can step port size and flow capacity up or down across the range. Because published flow data appears as curves rather than a single rating, we confirm the exact flow and datasheet figures for your application on request.
AirTAC GR400-15 Pressure Regulator (GR40015LF1) Technical Specifications
| Model | AirTAC GR400-15 Pressure Regulator (GR40015LF1) |
|---|---|
| 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 — square, MPa 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 (GR40015LF1)
| 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). |
| F | Gauge shape: Square. C is round, F is square. |
| 1 | Gauge scale: MPa. 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 (GR40015LF1) Is Used
Pneumatic actuation on packaging machinery
Sets a steady, reduced supply pressure to cylinder-driven sealing, cutting and forming stations on a packaging line where the actuators are rated for low working pressure only.
Low-pressure circuit on a paint spray booth
Regulates atomising and conveying air downstream of the plant filter set on a coating line, keeping gun supply pressure inside a controlled low-pressure window.
Conveyor diverters and stopper gates
Feeds air cylinders on sortation and diverting gates in a warehouse conveyor system, holding a consistent low setting so products are stopped and pushed gently.
Is the AirTAC GR400-15 Pressure Regulator (GR40015LF1) the Right Regulator?
For a 1/2 in line, size 400 is the natural step; if your flow demand sits between sizes, compare the 300 and 400 curves rather than guessing. The L suffix here means the low-pressure type, so choose it when the working outlet must stay at or below 0.4 MPa; the standard GR covers 0.05-0.9 MPa. Gauge options are the embedded square unit (this model, MPa scale) or an external round gauge, and no-gauge or psi/bar scales can be specified. PT is the standard thread; G (BSPP) and NPT are catalogue options to order. A bracket is included unless the J no-bracket code is used, and K adds a reverse/check valve.
Flow for the GR series is published as curves, not a single rated figure, so ask us to confirm 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 (GR40015LF1) FAQ
AirTAC publishes GR flow data as performance curves, not as a single rated number, so we do not quote a figure here. Tell us your inlet pressure, outlet setting and expected air demand and we will confirm the sizing from the datasheet on request.
L marks the low-pressure type of the GR regulator. Its outlet is adjustable up to 0.4 MPa, instead of the 0.05-0.9 MPa range of the standard type. If your line needs settings above 0.4 MPa, specify the standard GR400-15 instead. The maximum inlet pressure remains 1.0 MPa (145 psi).
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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.