The AirTAC GR40015LC3T AirTAC Air Pressure Regulator NPT1/2 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.
The GR40015LC3T is an AirTAC GR-series air pressure regulator in the 400 size with 1/2 in NPT ports. This is the low-pressure (L) type, so its regulation range tops out at 0.4 MPa, and it carries a round external gauge scaled in bar. The GR family is regulation only: there is no filter, no drain bowl and no lubricator in this unit, so it is used downstream of filtration where the job is simply to hold a steady, reduced working pressure. Maximum inlet pressure is 1.0 MPa (145 psi), and the GR is rated for -20 to 70 C, a wider temperature window than the rest of the G family.
This is a genuine AirTAC part. The GR line spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, in standard or low-pressure versions, with your choice of gauge (embedded square or external round, scaled in MPa, psi or bar), thread (PT standard, G or NPT to order), bracket or no bracket, panel mounting, and an optional reverse/check valve. Flow is published as curves rather than a single rated figure, so ask us to confirm sizing against your application before ordering.
| Model | GR40015LC3T AirTAC Air Pressure Regulator NPT1/2 |
|---|---|
| Series | GR400 pressure regulator |
| Port size | PT1/2" (NPT 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.
| 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. |
| T | NPT 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.
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 |
Set the low holding pressure that clamp cylinders need on a fixture line, with the bar-scaled round gauge letting an operator verify the setting at the station.
Feed sealing heads and hold-down cylinders on a packaging line where the process calls for a reduced, stable pressure rather than full line pressure.
Regulate air to spray, purge or test stations in a lab or coating cell where the working pressure must stay below 0.4 MPa and remain steady.
Start with the port and size step: this 400-size unit takes 1/2 in ports, and the correct size is chosen by matching the flow curve to the air your circuit actually consumes - we can confirm the curve figures on request because flow is published as curves, not a single rating. Decide between the standard GR (0.05-0.9 MPa range) and this low-pressure L type (up to 0.4 MPa) based on the working pressure your actuator or process needs. Choose the gauge: embedded square or external round, with MPa, psi or bar scales - this unit has the round gauge in bar. Thread is PT as standard with G and NPT as order options; this unit is NPT. A bracket is included and the GR is also panel-mountable; J-coded variants omit the bracket, and a K-coded variant adds a reverse/check valve.
Quick checklist
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 publishes GR flow as curves, not as a single rated figure, so we do not quote a rated flow number. Send us your application details and we will confirm the relevant curve figures from the datasheet on request so you can size the 400-size, 1/2 in port unit against your actual air consumption.
L marks the low-pressure type: its regulation range tops out at 0.4 MPa, whereas a standard GR regulates from 0.05 up to 0.9 MPa. Everything else decodes as follows: 400 is the size, 15 is 1/2 in ports, T is NPT thread, C is the external round gauge, and 3 sets its scale to bar. The unit is regulation only - no filter, bowl or lubricator - and includes a mounting bracket.
Genuine AirTAC parts produced by AirTAC factory.
Covers non-human-caused product damage.
Standard models are processed and dispatched in 3-5 business days.
Most inquiries answered within 7-8 hours.
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.